What are GOST Flanges?
GOST flanges are flanges conforming to Russian standards GOST /ГОСТ 12820, GOST /ГОСТ 12821, GOST /ГОСТ 12836. GOST flanges are commonly used in pipeline systems in Russia and other countries of the former Soviet Union. They are available in various sizes and pressure ratings for connecting pipes and other piping components in piping systems. GOST flanges are classified according to the type of pipe ends, pressure rating and flange type. They are usually made of carbon steel, but can also be made of other materials such as stainless steel or nickel-alloy steel.
Standard Specication For GOST Flanges
- Type: Plate Flange, Welding neck flange, steel butt-welded flanges, slip on flange, blind flange, welded neck flange, threaded flange, lapped joint flange (loose flange), socket welded flange, Orifice Flanges, long weld neck flange and special flange.
- Standard: Plate Flanges (GOST 12820-80), Blind Flanges (GOST 12836-67), Welding neck Flanges (GOST 12821-80), Steel Butt-Welded Flanges (GOST 12821-80).
- Size: DN15-DN1200.
- Pressure: PN 0.6MPa, PN 1.0MPa, PN 1.6MPa, PN 2.5MPa, PN 4.0MPa, PN 6.3MPa.
- Packing: No Fumigate or Fumigate Plywood/Wood Pallet or Case.
- Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.
- Usage: Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.
Advantages and disadvantage of GOST Flanges
Some of the advantages of GOST flanges include.
- They are available in a variety of sizes and pressure ratings to suit a wide range of applications.
- GOST flanges are usually made of high quality materials such as carbon steel or stainless steel, which makes them strong and durable.
- They are easy to install and maintain because they have a simple design and a simple bolt pattern.
- GOST flanges are usually cheaper than other types of flanges such as ANSI or DIN flanges.
However, there are some disadvantages to using GOST flanges.
- They may not be as widely available as other types of flanges, especially outside of Russia and the former Soviet Union.
- GOST flanges may not be compatible with other types of flanges (such as ANSI or DIN flanges), which may limit their use in some systems.
- The availability of spare parts and repair services for GOST flanges may be limited in some areas.
- Some users may find the size and pressure rating system used for GOST flanges confusing or unfamiliar.
Whether a GOST flange is a good choice depends on the specific requirements and constraints of the application.
What are the different types of GOST flanges?
GOST flanges are designed to conform to specific German standards and are often used in conjunction with other types of flanges, such as ANSI flanges, to create a secure and leak-free connection in a piping system. There are several different types of GOST flanges, each with its own unique features and uses. Some of the most common types of GOST flanges include:
- GOST Blind Flange: A GOST blind flange is a type of flange that has no bore and is used to close the end of a piping system or a pressure vessel.
- GOST Welding Neck Flange: A GOST welding neck flange is a type of flange that has a neck that is designed to be welded to a pipe or other fitting. This type of flange is often used in high-pressure and high-temperature applications.
- GOST Plane Flange: A GOST plane flange is a type of flange that has a flat face and is used to connect two pipes or fittings together. This type of flat flange is typically used in low-pressure applications.
GOST flanges are a versatile and widely-used type of flange that can be found in many different types of piping systems. They are designed to conform to specific German standards and are available in a wide range of sizes and materials, making them suitable for a variety of applications.
Material of GOST Flanges
GOST Flanges are typically made from cast or forged carbon steel, stainless steel. In addition to carbon steel and stainless steel, GOST flanges can also be made from other materials such as alloy steel, titanium alloy, aluminum, and brass. The choice of material will depend on the specific requirements of the application, including the temperature, pressure, and corrosive conditions in which the flange will be used.
| GOST Stainless Steel Flanges | ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, GOST 1.4301, GOST 1.4306, GOST 1.4401, GOST 1.4404, GOST 1.4308, GOST 1.4408, GOST 1.4306, GOST 1.4409 |
| GOST Alloy Steel Flanges | ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91 |
| GOST Carbon Steel Flanges | ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, GOST 1.0402, GOST 1.0460, GOST 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80) |
| GOST Inconel Blind Flange | ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750 BS 10 |
| GOST Monel Flange | ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500) |
| GOST Titanium Flange | ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7 ASTM R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5 |
| GOST Hastelloy C22 Flanges | ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X |
| GOST Alloy 20 Flange | ASTM B462 / ASME SB462, Carpenter 20 Alloy, Alloy 20Cb-3 |
| GOST Aluminium Flanges | 5052 /6061/ 6063 / 2017 / 7075 / etc. |
| GOST Nickel Alloy Flange | ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC |
| GOST 254 SMO Flanges | SMO 254/6Mo, ASTM A182 / ASME SA182, UNS S31254, GOST 1.4547 |
| Other GOST Flanges material | Aluminium bronze, Tin bronze, Lead bronze |
| GOST Super Duplex Steel Flanges | S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| GOST Nimonic Flange | Nimonic 75, Nimonic 80A, Nimonic 90 |
| GOST Copper Flange | T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc |
| GOST Copper Nickel Flange | ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640 |
| GOST Incoloy Flange | ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 |
| GOST Duplex Steel Flanges | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| GOST Brass Flange | 3602 / 2604 / H59 / H62 / etc. |
Size of GOST Flanges
The size of GOST flanges is specified in millimeters and is based on the nominal diameter of the pipe that the flange is designed to connect to. GOST flanges are available in a range of sizes, from small diameter flanges for pipes with diameters of 15 mm or less, to large diameter flanges for pipes with diameters of up to 3,000 mm. The size of a GOST flange is typically indicated by a series of numbers that specify the nominal diameter of the pipe, the pressure rating of the flange, and the type of flange. For example, a GOST flange with the size designation “PN 25 DN 100” would be a flange with a nominal diameter of 100 mm, a pressure rating of 25, and a standard flange type.
Dimensions of GOST Flanges
There are several different standards of GOST flanges, including:
- GOST 12820-80 flanges: These flanges are used for low-pressure piping systems and have a pressure rating of up to 1.6 MPa (232 psi). They are available in sizes from DN 15 (NPS 1/2″) to DN 600 (NPS 24″).
- GOST 12821-80 flanges: These flanges are used for high-pressure piping systems and have a pressure rating of up to 25 MPa (3625 psi). They are available in sizes from DN 15 (NPS 1/2″) to DN 600 (NPS 24″).
- GOST/ГОСТ 12836-67 specifies the dimensions of blind flanges, which are used to seal the end of a pipe or vessel opening. The standard covers flanges with nominal pressure (Pnom) ranging from 0.1 to 20.0 MPa (from 1 to 200 kgf/cm2).
- GOST 12815-80 flanges: These flanges are used for piping systems with extreme temperatures and have a pressure rating of up to 1.6 MPa (232 psi). They are available in sizes from DN 15 (NPS 1/2″) to DN 600 (NPS 24″).
The dimensions of GOST flanges are specified in the relevant standard, and they are typically based on the nominal size of the pipe and the pressure rating of the flange. The dimensions of the flange, including the diameter, thickness, and bolt hole size, will vary depending on the specific type of flange and the size of the pipe it is used with.
Dimensions of GOST/ГОСТ 12820 Plane flange/Flat flange PN6 0.6Mpa
| Давление PN = 0,6 МПа (6 кгс/с м²) | |||||||
| Наименование | D, мм | D1, мм | dв, мм | b, мм | d, мм | отв., шт. | Масса, кг. |
| Фланец плоский ГОСТ 12820-80 (01) 1-15-6 ст.3 (20) | 80 | 55 | 19 | 10 | 11 | 4 | 0,33 |
| Фланец плоский ГОСТ 12820-80 (01) 1-20-6 ст.3 (20) | 90 | 65 | 26 | 12 | 0,53 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-25-6 ст.3 (20) | 100 | 75 | 33 | 12 | 0,64 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-32-6 ст.3 (20) | 120 | 90 | 39 | 13 | 14 | 1,01 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-40-6 ст.3 (20) | 130 | 100 | 46 | 13 | 1,21 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-50-6 ст.3 (20) | 140 | 110 | 59 | 13 | 1,33 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-65-6 ст.3 (20) | 160 | 130 | 78 | 13 | 1,63 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-80-6 ст.3 (20) | 185 | 150 | 91 | 15 | 18 | 2,44 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-100-6 ст.3 (20) | 205 | 170 | 110 | 15 | 2,85 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-125-6 ст.3 (20) | 235 | 200 | 135 | 17 | 8 | 3,88 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-150-6 ст.3 (20) | 260 | 225 | 161 | 17 | 4,39 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-200-6 ст.3 (20) | 315 | 280 | 222 | 19 | 5,89 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-250-6 ст.3 (20) | 370 | 335 | 273 | 20 | 12 | 7,67 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-300-6 ст.3 (20) | 435 | 395 | 325 | 20 | 22 | 10,28 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-350-6 ст.3 (20) | 485 | 445 | 377 | 22 | 12,58 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-400-6 ст.3 (20) | 535 | 495 | 426 | 24 | 16 | 15,2 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-500-6 ст.3 (20) | 640 | 600 | 530 | 25 | 19,72 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-600-6 ст.3 (20) | 755 | 705 | 630 | 25 | 26 | 20 | 26,24 |
| Фланец плоский ГОСТ 12820-80 (01) 1-800-6 ст.3 (20) | 975 | 920 | 820 | 27 | 30 | 24 | 46,14 |
| Фланец плоский ГОСТ 12820-80 (01) 1-1000-6 ст.3 (20) | 1 175 | 1 120 | 1 020 | 31 | 28 | 64,36 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-1200-6 ст.3 (20) | 1 400 | 1 340 | 1 220 | 34 | 33 | 32 | 99,03 |
| Проход условный Dy | Py 0,6 МПа (6 кгс/см2) | ||||||
| dн | dв | b | Масса, кг | ||||
| с соединительным выступом | с выступом | с впадиной | |||||
| 10 | 14 | 15 | 10 | 0,31 | 0,31 | 0,30 | |
| 15 | 18 | 19 | 0,33 | 0,33 | 0,32 | ||
| 20 | 25 | 26 | 12 | 0,53 | 0,53 | 0,51 | |
| 25 | 32 | 33 | 0,64 | 0,64 | 0,62 | ||
| 32 | 38 | 39 | 13 | 1,01 | 1,02 | 0,98 | |
| 40 | 45 | 46 | 1,21 | 1,19 | 1,16 | ||
| 50 | 57 | 59 | 1,33 | 1,30 | 1,27 | ||
| 65 | 76 | 78 | 1,63 | 1,60 | 1,55 | ||
| 80 | 89 | 91 | 15 | 2,44 | 2,40 | 2,35 | |
| 100 | 108 (А) | 110 | 2,85 | 2,81 | 2,72 | ||
| 114 (Б) | 116 | 2,73 | 2,66 | 2,60 | |||
| 125 | 133 (А) | 135 | 17 | 3,88 | 3,84 | 3,70 | |
| 140 (Б) | 142 | 3,68 | 3,59 | 3,50 | |||
| 150 | 152 (А) | 154 | 4,63 | 4,65 | 4,43 | ||
| 159 (Б) | 161 | 4,39 | 4,36 | 4,19 | |||
| 168 (В) | 170 | 4,09 | 3,98 | 3,89 | |||
| -175 | 194 | 196 | 19 | 5,36 | 5,33 | 5,14 | |
| 200 | 219 | 222 | 5,89 | 5,86 | 5,65 | ||
| -225 | 245 | 245 | 6,60 | 6,60 | 6,29 | ||
| 250 | 273 | 273 | 20 | 7,67 | 7,64 | 7,34 | |
| 300 | 325 | 325 | 10,28 | 10,18 | 9,74 | ||
| 350 | 377 | 377 | 22 | 12,58 | 12,45 | 12,00 | |
| 400 | 426 | 426 | 24 | 15,20 | 15,07 | 14,53 | |
| -450 | 480 | 480 | 17,25 | 17,04 | 16,52 | ||
| 500 | 530 | 530 | 25 | 19,72 | 19,57 | 18,86 | |
| 600 | 630 | 630 | 26,24 | 25,91 | 24,96 | ||
| -700 | 720 | 720 | 27 | 36,68 | 36,27 | 35,28 | |
| 800 | 820 | 820 | 46,14 | 45,66 | 43,65 | ||
| -900 | 920 | 920 | 29 | 55,10 | – | – | |
| 1000 | 1020 | 1020 | 31 | 64,36 | |||
| 1200 | 1220 | 1220 | 34 | 99,03 | |||
| 1400 | 1420 | 1420 | 43 | 161,45 | |||
| 1600 | 1620 | 1620 | 48 | 203,05 | |||
| Фланцы стальные плоские приварные с соединительным выступом по ГОСТ 12820-80 | |||||||
Dimensions of GOST/ГОСТ 12820 Plane flange/Flat flange PN10 1.0Mpa
| Давление PN = 1,0 МПа (10 кгс/с м²) | |||||||
| Наименование | D, мм | D1, мм | dв, мм | b, мм | d, мм | отв., шт. | Масса, кг. |
| Фланец плоский ГОСТ 12820-80 (01) 1-15-10 ст.3 (20) | 95 | 65 | 19 | 10 | 14 | 4 | 0,51 |
| Фланец плоский ГОСТ 12820-80 (01) 1-20-10 ст.3 (20) | 105 | 75 | 26 | 12 | 0,74 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-25-10 ст.3 (20) | 115 | 85 | 33 | 12 | 0,89 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-32-10 ст.3 (20) | 135 | 100 | 39 | 14 | 18 | 1,4 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-40-10 ст.3 (20) | 145 | 110 | 46 | 15 | 1,71 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-50-10 ст.3 (20) | 160 | 125 | 59 | 15 | 2,06 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-65-10 ст.3 (20) | 180 | 145 | 78 | 17 | 2,8 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-80-10 ст.3 (20) | 195 | 160 | 91 | 17 | 3,19 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-100-10 ст.3 (20) | 215 | 180 | 110 | 19 | 8 | 3,96 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-125-10 ст.3 (20) | 245 | 210 | 135 | 21 | 5,4 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-150-10 ст.3 (20) | 280 | 240 | 161 | 21 | 22 | 6,62 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-200-10 ст.3 (20) | 335 | 295 | 222 | 21 | 8,05 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-250-10 ст.3 (20) | 390 | 350 | 273 | 23 | 12 | 10,65 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-300-10 ст.3 (20) | 440 | 400 | 325 | 24 | 12,9 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-350-10 ст.3 (20) | 500 | 460 | 377 | 24 | 16 | 15,85 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-400-10 ст.3 (20) | 565 | 515 | 426 | 26 | 26 | 21,56 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-500-10 ст.3 (20) | 670 | 620 | 530 | 28 | 20 | 27,7 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-600-10 ст.3 (20) | 780 | 725 | 630 | 31 | 30 | 39,4 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-800-10 ст.3 (20) | 1010 | 950 | 820 | 37 | 33 | 24 | 79,16 |
| Фланец плоский ГОСТ 12820-80 (01) 1-1000-10 ст.3 (20) | 1220 | 1160 | 1020 | 43 | 28 | 118,43 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-1200-10 ст.3 (20) | 1455 | 1380 | 1220 | 51 | 39 | 32 | 197,44 |
| Py 1,0 МПа (10 кгс/см2) | |||||||
| Проход условный Dy | dн | dв | b | Масса, кг | |||
| с соединительным выступом | с выступом | с впадиной | |||||
| 10 | 14 | 15 | 10 | 0,46 | 0,46 | 0,44 | |
| 15 | 18 | 19 | 0,51 | 0,51 | 0,49 | ||
| 20 | 25 | 26 | 12 | 0,74 | 0,75 | 0,71 | |
| 25 | 32 | 33 | 0,89 | 0,89 | 0,84 | ||
| 32 | 38 | 39 | 14 | 1,40 | 1,39 | 1,34 | |
| 40 | 45 | 46 | 15 | 1,71 | 1,72 | 1,67 | |
| 50 | 57 | 59 | 2,06 | 2,03 | 1,99 | ||
| 65 | 76 | 78 | 17 | 2,80 | 2,77 | 2,69 | |
| 80 | 89 | 91 | 3,19 | 3,13 | 3,08 | ||
| 100 | 108 (А) | 110 | 19 | 3,96 | 3,94 | 3,76 | |
| 114 (Б) | 116 | 3,81 | 3,76 | 3,61 | |||
| 125 | 133 (А) | 135 | 21 | 5,40 | 5,38 | 5,18 | |
| 140 (Б) | 142 | 5,15 | 5,08 | 4,93 | |||
| 150 | 152 (А) | 154 | 6,92 | 6,97 | 6,62 | ||
| 159 (Б) | 161 | 6,62 | 6,62 | 6,33 | |||
| 168 (В) | 170 | 6,24 | 6,17 | 5,95 | |||
| -175 | 194 | 196 | 7,32 | 7,31 | 7,02 | ||
| 200 | 219 | 222 | 8,05 | 8,04 | 7,71 | ||
| -225 | 245 | 245 | 9,30 | 9,30 | 9,05 | ||
| 250 | 273 | 273 | 23 | 10,65 | 10,66 | 10,22 | |
| 300 | 325 | 325 | 24 | 12.9 | 12,89 | 12,21 | |
| 350 | 377 | 377 | 15,85 | 15,79 | 14,96 | ||
| 400 | 426 | 426 | 26 | 21,56 | 21,51 | 20,49 | |
| -450 | 480 | 480 | 22,76 | 22,68 | 21,67 | ||
| 500 | 530 | 530 | 28 | 22,70 | 28,02 | 26,86 | |
| 600 | 630 | 630 | 31 | 39,40 | 39,26 | 37,48 | |
| -700 | 720 | 720 | 34 | 59,46 | 58,58 | 56,45 | |
| 800 | 820 | 820 | 37 | 79,16 | 77,89 | 76,08 | |
| -900 | 920 | 920 | 40 | 94,13 | – | – | |
| 1000 | 1020 | 1020 | 43 | 118,43 | |||
| 1200 | 1220 | 1222 | 51 | 197,44 | |||
| 1400 | 1420 | 1420 | 60 | 278,92 | |||
| 1600 | 1620 | 1620 | 70 | 422,65 | |||
| Фланцы стальные плоские приварные с соединительным выступом по ГОСТ 12820-80 | |||||||
Dimensions of GOST/ГОСТ 12820 Plane flange/Flat flange PN16 1.6Mpa
| Давление PN = 1,6 МПа (16 кгс/с м²) | |||||||
| Наименование | D, мм | D1, мм | dв, мм | b, мм | d, мм | отв., шт. | Масса, кг |
| Фланец плоский ГОСТ 12820-80 (01) 1-15-16 ст.3 (20) | 95 | 65 | 19 | 12 | 14 | 4 | 0,61 |
| Фланец плоский ГОСТ 12820-80 (01) 1-20-16 ст.3 (20) | 105 | 75 | 26 | 14 | 0,86 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-25-16 ст.3 (20) | 115 | 85 | 33 | 16 | 1,17 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-32-16 ст.3 (20) | 135 | 100 | 39 | 16 | 18 | 1,58 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-40-16 ст.3 (20) | 145 | 110 | 46 | 17 | 1,96 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-50-16 ст.3 (20) | 160 | 125 | 59 | 19 | 2,58 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-65-16 ст.3 (20) | 180 | 145 | 78 | 21 | 3,42 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-80-16 ст.3 (20) | 195 | 160 | 91 | 21 | 3,71 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-100-16 ст.3 (20) | 215 | 180 | 110 | 23 | 8 | 4,73 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-125-16 ст.3 (20) | 245 | 210 | 135 | 25 | 6,38 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-150-16 ст.3 (20) | 280 | 240 | 161 | 25 | 22 | 7,81 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-200-16 ст.3 (20) | 335 | 295 | 222 | 27 | 12 | 10,1 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-250-16 ст.3 (20) | 405 | 355 | 273 | 28 | 26 | 14,49 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-300-16 ст.3 (20) | 460 | 410 | 325 | 28 | 17,78 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-350-16 ст.3 (20) | 520 | 470 | 377 | 30 | 16 | 22,88 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-400-16 ст.3 (20) | 580 | 525 | 426 | 34 | 30 | 31 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-500-16 ст.3 (20) | 710 | 650 | 530 | 44 | 33 | 20 | 57,01 |
| Фланец плоский ГОСТ 12820-80 (01) 1-600-16 ст.3 (20) | 840 | 770 | 630 | 45 | 39 | 80,03 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-800-16 ст.3 (20) | 1020 | 950 | 820 | 49 | 24 | 104,41 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-1000-16 ст.3 (20) | 1255 | 1170 | 1020 | 58 | 45 | 28 | 179,37 |
| Фланец плоский ГОСТ 12820-80 (01) 1-1200-16 ст.3 (20) | 1485 | 1390 | 1220 | 71 | 52 | 32 | 297,78 |
| Py 1,6 МПа (16 кгс/см2) | |||||||
| Проход условный Dy | dн | dв | b | Масса, кг | |||
| с соединительным выступом | с выступом | с впадиной | |||||
| 10 | 14 | 15 | 12 | 0,54 | 0,54 | 0,53 | |
| 15 | 18 | 19 | 0,61 | 0,61 | 0,58 | ||
| 20 | 25 | 26 | 14 | 0,86 | 0,86 | 0,83 | |
| 25 | 32 | 33 | 16 | 1,17 | 1,17 | 1,13 | |
| 32 | 38 | 39 | 1,58 | 1,58 | 1,53 | ||
| 40 | 45 | 46 | 17 | 1,96 | 1,93 | 1,89 | |
| 50 | 57 | 59 | 19 | 2,58 | 2,54 | 2,50 | |
| 65 | 76 | 78 | 21 | 3,42 | 3,38 | 3,30 | |
| 80 | 89 | 91 | 3,71 | 3,71 | 3,70 | ||
| 100 | 108 (А) | 110 | 23 | 4,73 | 4,72 | 4,53 | |
| 114 (Б) | 116 | 4,55 | 4,51 | 4,35 | |||
| 125 | 133 (А) | 135 | 25 | 6,38 | 6,38 | 6,15 | |
| 140 (Б) | 142 | 6,08 | 6,03 | 5,85 | |||
| 150 | 152 (А) | 154 | 8,16 | 8,21 | 7,87 | ||
| 159 (Б) | 161 | 7,81 | 7,81 | 7,52 | |||
| 168 (В) | 170 | 7,36 | 7,29 | 7,07 | |||
| -175 | 194 | 196 | 8,64 | 8,63 | 8,34 | ||
| 200 | 219 | 222 | 27 | 10,10 | 10,21 | 9,88 | |
| -225 | 245 | 245 | 11,70 | 12,08 | 11,66 | ||
| 250 | 273 | 273 | 28 | 14,49 | 14,48 | 14,06 | |
| 300 | 325 | 325 | 17,78 | 17,59 | 17,12 | ||
| 350 | 377 | 377 | 30 | 22,88 | 22,65 | 21,99 | |
| 400 | 426 | 426 | 34 | 31,00 | 30,76 | 29,94 | |
| -450 | 480 | 480 | 38 | 39,64 | 39,08 | 38,55 | |
| 500 | 530 | 530 | 44 | 57,01 | 56,17 | 55,74 | |
| 600 | 630 | 630 | 45 | 80,03 | 79,03 | 78,80 | |
| -700 | 720 | 720 | 47 | 84,21 | 84,34 | 83,06 | |
| 800 | 820 | 820 | 49 | 104,41 | 103,15 | 101,34 | |
| -900 | 920 | 920 | 54 | 128,60 | – | – | – |
| 1000 | 1020 | 1020 | 58 | 179,37 | |||
| 1200 | 1220 | 1220 | 71 | 297,78 | |||
| Фланцы стальные плоские приварные с соединительным выступом по ГОСТ 12820-80 | |||||||
Dimensions of GOST/ГОСТ 12820 Plane flange/Flat flange PN25 2.5Mpa
| Давление PN = 2,5 МПа (25 кгс/с м²) | |||||||
| Наименование | D, мм | D1, мм | dв, мм | b, мм | d, мм | отв., шт. | Масса, кг |
| Фланец плоский ГОСТ 12820-80 (01) 1-15-25 ст.3 (20) | 95 | 65 | 19 | 14 | 14 | 4 | 0,7 |
| Фланец плоский ГОСТ 12820-80 (01) 1-20-25 ст.3 (20) | 105 | 75 | 26 | 16 | 1 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-25-25 ст.3 (20) | 115 | 85 | 33 | 16 | 1,2 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-32-25 ст.3 (20) | 135 | 100 | 39 | 18 | 18 | 1,8 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-40-25 ст.3 (20) | 145 | 110 | 46 | 19 | 2,2 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-50-25 ст.3 (20) | 160 | 125 | 59 | 21 | 2,7 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-65-25 ст.3 (20) | 180 | 145 | 78 | 21 | 8 | 3,2 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-80-25 ст.3 (20) | 195 | 160 | 91 | 23 | 4,1 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-100-25 ст.3 (20) | 230 | 190 | 110 | 25 | 22 | 5,9 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-125-25 ст.3 (20) | 270 | 220 | 135 | 27 | 26 | 8,3 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-150-25 ст.3 (20) | 300 | 250 | 161 | 27 | 10,1 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-200-25 ст.3 (20) | 360 | 310 | 222 | 29 | 12 | 13,3 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-250-25 ст.3 (20) | 425 | 370 | 273 | 31 | 30 | 18,9 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-300-25 ст.3 (20) | 485 | 430 | 325 | 32 | 16 | 23,9 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-350-25 ст.3 (20) | 550 | 490 | 377 | 38 | 33 | 34,4 | |
| Фланец плоский ГОСТ 12820-80 (01) 1-400-25 ст.3 (20) | 610 | 550 | 426 | 40 | 44,6 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-500-25 ст.3 (20) | 730 | 660 | 530 | 48 | 39 | 20 | 67,3 |
| Фланец плоский ГОСТ 12820-80 (01) 1-600-25 ст.3 (20) | 840 | 770 | 630 | 49 | 90,87 | ||
| Фланец плоский ГОСТ 12820-80 (01) 1-800-25 ст.3 (20) | 1075 | 990 | 820 | 63 | 45 | 24 | 181,43 |
| Py 2,5 МПа (25 кгс/см2) | |||||||
| Проход условный Dy | dн | dв | b | Масса, кг | |||
| с соединительным выступом | с выступом | с впадиной | |||||
| 10 | 14 | 15 | 14 | 0,63 | 0,64 | 0,61 | |
| 15 | 18 | 19 | 0,70 | 0,71 | 0,68 | ||
| 20 | 25 | 26 | 16 | 0,98 | 0,97 | 0,94 | |
| 25 | 32 | 33 | 1,17 | 1,17 | 1,13 | ||
| 32 | 38 | 39 | 18 | 1,77 | 1,76 | 1,72 | |
| 40 | 45 | 46 | 19 | 2,18 | 2,15 | 2,11 | |
| 50 | 57 | 59 | 21 | 2,71 | 2,80 | 2,76 | |
| 65 | 76 | 78 | 3,22 | 3,21 | 3,14 | ||
| 80 | 89 | 91 | 23 | 4,06 | 4,00 | 3,95 | |
| 100 | 108 (А) | 110 | 25 | 5,92 | 5,89 | 5,72 | |
| 114 (Б) | 116 | 5,72 | 5,66 | 5,52 | |||
| 125 | 133 (А) | 135 | 27 | 8,26 | 8,25 | 8,23 | |
| 140 (Б) | 142 | 7,94 | 8,07 | 7,91 | |||
| 150 | 152 (А) | 154 | 10,51 | 10,50 | 10,22 | ||
| 159 (Б) | 161 | 10,12 | 10,07 | 9,83 | |||
| 168 (В) | 170 | 9,63 | 9,51 | 9,34 | |||
| -175 | 194 | 196 | 29 | 11,49 | 11,43 | 11,19 | |
| 200 | 219 | 222 | 13,34 | 13,24 | 13,01 | ||
| -225 | 245 | 245 | 31 | 16,93 | 16,82 | 16,52 | |
| 250 | 273 | 273 | 18,90 | 18,78 | 18,52 | ||
| 300 | 325 | 325 | 32 | 23,95 | 23,53 | 23,29 | |
| 350 | 377 | 377 | 38 | 34,35 | 34,57 | 34,18 | |
| 400 | 426 | 426 | 40 | 44,62 | 44,01 | 43,56 | |
| -450 | 480 | 480 | 44 | 51,80 | 51,10 | 50,71 | |
| 500 | 530 | 530 | 48 | 67,30 | 66,63 | 66,36 | |
| 600 | 630 | 630 | 49 | 90,87 | 89,13 | 88,91 | |
| -700 | 720 | 720 | 55 | 126,82 | 124,92 | 124,11 | |
| 800 | 820 | 820 | 63 | 181,43 | 174,52 | 174,15 | |
| Фланцы стальные плоские приварные с соединительным выступом по ГОСТ 12820-80 | |||||||
Dimensions of GOST/ГОСТ 12821 Welding neck flange PN6 0.6Mpa
| Проход условный Dy | d1 | b | h4 | Dm | Dn | Масса, кг | ||||
| с соединительным выступом | с выступом | с впадиной | с шипом | с пазом | ||||||
| 10 | 8 | 10 | 27 | 22 | 15 | 0,34 | 0,34 | 0,32 | 0,34 | 0,33 |
| 15 | 12 | 28 | 28 | 19 | 0,40 | 0,40 | 0,38 | 0,40 | 0,40 | |
| 20 | 18 | 30 | 36 | 26 | 0,53 | 0,53 | 0,50 | 0,53 | 0,52 | |
| 25 | 25 | 12 | 42 | 33 | 0,76 | 0,77 | 0,72 | 0,75 | 0,75 | |
| 32 | 31 | 33 | 50 | 39 | 1,10 | 1,08 | 1,04 | 1,08 | 1,08 | |
| 40 | 38 | 35 | 60 | 46 | 1,36 | 1,37 | 1,28 | 1,30 | 1,34 | |
| 50 | 49 | 70 | 58 | 1,53 | 1,51 | 1,44 | 1,46 | 1,47 | ||
| 65 | 66 | 88 | 77 | 1,97 | 2,06 | 1,83 | 1,72 | 1,75 | ||
| 80 | 78 | 13 | 37 | 102 | 90 | 2,76 | 2,76 | 2,80 | 2,65 | 2,72 |
| 100 | 96 | 38 | 122 | 110 | 3,35 | 3,04 | 3,03 | 3,03 | 3,04 | |
| 125 | 121 | 15 | 40 | 148 | 135 | 4,66 | 4,24 | 3,66 | 4,50 | 4,55 |
| 150 | 146 | 43 | 172 | 161 | 5,37 | 5,85 | 4,93 | 5,29 | 5,35 | |
| -175 | 177 | 17 | 47 | 210 | 196 | 7,32 | 8,10 | 6,92 | 7,11 | 7,16 |
| 200 | 202 | 50 | 235 | 222 | 8,37 | 9,35 | 7,75 | 7,98 | 8,05 | |
| -225 | 226 | 260 | 248 | 9,45 | 9,25 | 8,72 | 8,98 | 9,06 | ||
| 250 | 254 | 18 | 288 | 278 | 10,99 | 10,69 | 10,14 | 12,20 | 12,30 | |
| 300 | 303 | 340 | 330 | 14,82 | 14,28 | 14,10 | 13,81 | 14,11 | ||
| 350 | 351 | 390 | 382 | 17,69 | 18,65 | 17,64 | 16,35 | 16,72 | ||
| 400 | 398 | 440 | 432 | 20,55 | 19,69 | 19,30 | 18,83 | 19,31 | ||
| -450 | 450 | 494 | 484 | 23,63 | 23,60 | 21,90 | 21,62 | 22,24 | ||
| 500 | 501 | 19 | 545 | 535 | 26,63 | 29,10 | 25,90 | 24,44 | 25,10 | |
| 600 | 602 | 55 | 650 | 636 | 35,79 | 35,60 | 33,40 | 37,49 | 33,67 | |
| -700 | 692 | 740 | 726 | 44,31 | 44,10 | 41,10 | 40,60 | 41,86 | ||
| 800 | 792 | 60 | 844 | 826 | 56,17 | 55,20 | 52,20 | 51,67 | 53,36 | |
| -900 | 892 | 21 | 944 | 926 | 66,79 | – | – | – | – | |
| 1000 | 992 | 1044 | 1028 | 73,51 | ||||||
| 1200 | 1192 | 23 | 70 | 1248 | 1228 | 111,43 | ||||
| 1400 | 1392 | 27 | 85 | 1456 | 1428 | 156,58 | ||||
| 1600 | 1592 | 32 | 95 | 1660 | 1628 | 218,57 | ||||
Dimensions of GOST/ГОСТ 12821 Welding neck flange PN10 1.0MPA
| Давление PN = 1,0 МПа (10 кгс/с м²) | ||||||||||
| Наименование | D, мм. | D1, мм. | d, мм. | Dm, мм | Dn, мм | d1, мм. | b, мм. | h4, мм. | К-во отв. n, шт. | Масса, кг |
| Фланец ГОСТ 12821-80 1-15-10 ст.3 (20) | 95 | 65 | 14 | 30 | 19 | 12 | 10 | 33 | 4 | 0,58 |
| Фланец ГОСТ 12821-80 1-20-10 ст.3 (20) | 105 | 75 | 28 | 26 | 18 | 12 | 36 | 0,87 | ||
| Фланец ГОСТ 12821-80 1-25-10 ст.3 (20) | 115 | 85 | 45 | 33 | 25 | 38 | 1,05 | |||
| Фланец ГОСТ 12821-80 1-32-10 ст.3 (20) | 135 | 100 | 18 | 55 | 39 | 31 | 13 | 40 | 1,54 | |
| Фланец ГОСТ 12821-80 1-40-10 ст.3 (20) | 145 | 110 | 62 | 46 | 38 | 42 | 1,83 | |||
| Фланец ГОСТ 12821-80 1-50-10 ст.3 (20) | 160 | 125 | 76 | 58 | 49 | 2,26 | ||||
| Фланец ГОСТ 12821-80 1-65-10 ст.3 (20) | 180 | 145 | 94 | 77 | 66 | 15 | 45 | 3,17 | ||
| Фланец ГОСТ 12821-80 1-80-10 ст.3 (20) | 195 | 160 | 105 | 90 | 78 | 47 | 3,67 | |||
| Фланец ГОСТ12821-80 1-100-10 ст.3 (20) | 215 | 180 | 128 | 110 | 96 | 17 | 48 | 8 | 4,7 | |
| Фланец ГОСТ12821-80 1-125-10 ст.3 (20) | 245 | 210 | 156 | 135 | 121 | 19 | 57 | 6,71 | ||
| Фланец ГОСТ12821-80 1-150-10 ст.3 (20) | 280 | 240 | 22 | 180 | 161 | 146 | 8,17 | |||
| Фланец ГОСТ12821-80 1-200-10 ст.3 (20) | 335 | 295 | 240 | 222 | 202 | 58 | 11,35 | |||
| Фланец ГОСТ12821-80 1-250-10 ст.3 (20) | 390 | 350 | 290 | 278 | 254 | 21 | 60 | 12 | 14,64 | |
| Фланец ГОСТ12821-80 1-300-10 ст.3 (20) | 440 | 400 | 345 | 330 | 303 | 22 | 18,66 | |||
| Фланец ГОСТ12821-80 1-350-10 ст.3 (20) | 500 | 460 | 400 | 382 | 351 | 16 | 24 | |||
| Фланец ГОСТ12821-80 1-400-10 ст.3 (20) | 565 | 515 | 26 | 445 | 432 | 398 | 30 | |||
| Фланец ГОСТ12821-80 1-500-10 ст.3 (20) | 670 | 620 | 550 | 535 | 501 | 24 | 65 | 20 | 39,2 | |
| Фланец ГОСТ12821-80 1-600-10 ст.3 (20) | 780 | 725 | 30 | 650 | 636 | 602 | 48,8 | |||
| Фланец ГОСТ12821-80 1-800-10 ст.3 (20) | 1010 | 950 | 33 | 850 | 826 | 792 | 27 | 75 | 24 | 87,24 |
| Фланец ГОСТ12821-80 1-1000-10 ст.3 (20) | 1220 | 1160 | 1050 | 1028 | 992 | 29 | 80 | 28 | 119,19 | |
| Фланец ГОСТ12821-80 1-1200-10 ст.3 (20) | 1455 | 1380 | 39 | 1256 | 1228 | 1192 | 33 | 90 | 32 | 179,91 |
| Проход условный Dy | d1 | b | h4 | Dm | Dn | Масса, кг | ||||
| с соединительным выступом | с выступом | с впадиной | с шипом | с пазом | ||||||
| 10 | 8 | 10 | 33 | 25 | 15 | 0,50 | 0,50 | 0,48 | 0,50 | 0,49 |
| 15 | 12 | 30 | 19 | 0,58 | 0,58 | 0,54 | 0,57 | 56 | ||
| 20 | 18 | 12 | 36 | 38 | 26 | 0,87 | 0,87 | 0,81 | 0,87 | 0,83 |
| 25 | 25 | 38 | 45 | 33 | 1,05 | 1,05 | 0,98 | 1,03 | 1,02 | |
| 32 | 31 | 13 | 40 | 55 | 39 | 1,54 | 1,53 | 1,45 | 1,50 | 1,49 |
| 40 | 38 | 42 | 62 | 46 | 1,83 | 1,78 | 1,71 | 1,74 | 1,78 | |
| 50 | 49 | 76 | 58 | 2,26 | 2,23 | 2,15 | 2,15 | 2,21 | ||
| 65 | 66 | 15 | 45 | 94 | 77 | 3,17 | 3,11 | 2,92 | 3,06 | 3,14 |
| 80 | 78 | 47 | 105 | 90 | 3,67 | 3,60 | 3,46 | 3,54 | 3,65 | |
| 100 | 96 | 17 | 48 | 128 | 110 | 4,70 | 4,70 | 4,49 | 4,50 | 4,54 |
| 125 | 121 | 19 | 57 | 156 | 135 | 6,71 | 6,58 | 6,27 | 6,12 | 6,23 |
| 150 | 146 | 180 | 161 | 8,17 | 8,20 | 7,77 | 8,80 | 8,90 | ||
| -175 | 177 | 210 | 196 | 9,71 | 9,57 | 9,09 | 9,36 | 9,49 | ||
| 200 | 202 | 58 | 240 | 222 | 11,35 | 11,00 | 10,47 | 10,28 | 10,32 | |
| -225 | 226 | 60 | 268 | 248 | 13,24 | 13,04 | 12,40 | 12,64 | 12,83 | |
| 250 | 254 | 21 | 290 | 278 | 14,64 | 14,39 | 13,86 | 13,64 | 13,83 | |
| 300 | 303 | 22 | 345 | 330 | 18,66 | 19,30 | 17,70 | 18,52 | 18,90 | |
| 350 | 351 | 400 | 382 | 24,00 | 21,70 | 22,56 | 22,70 | 23,00 | ||
| 400 | 398 | 445 | 432 | 30,00 | 30,35 | 27,65 | 28,00 | 28,50 | ||
| -450 | 450 | 65 | 500 | 484 | 33,33 | 34,69 | 31,30 | 31,21 | 31,83 | |
| 500 | 501 | 24 | 550 | 535 | 39,20 | 40,00 | 37,00 | 36,91 | 37,60 | |
| 600 | 602 | 650 | 636 | 48,80 | 50,00 | 46,60 | 45,52 | 48,70 | ||
| -700 | 692 | 25 | 744 | 726 | 65,26 | 64,70 | 60,50 | 59,86 | 62,28 | |
| 800 | 792 | 27 | 75 | 850 | 826 | 87,24 | 86,10 | 80,40 | 81,25 | 84,28 |
| -900 | 892 | 29 | 80 | 950 | 926 | 103,02 | – | – | – | – |
| 1000 | 992 | 1050 | 1028 | 119,19 | ||||||
| 1200 | 1192 | 33 | 90 | 1256 | 1228 | 179,91 | ||||
Dimensions of GOST/ГОСТ 12821 Welding neck flange PN16 1.6Mpa
| Давление PN = 1,6 МПа (16 кгс/с м²) | ||||||||||
| Наименование | D, мм | D1, мм | d, мм | Dm, мм | Dn, мм | d1, мм | b, мм | h4, мм | к-во отв. n, шт. | Масса, кг |
| Фланец ГОСТ 12821-80 1-15-16 ст.3 (20) | 95 | 65 | 14 | 30 | 19 | 12 | 12 | 33 | 4 | 0,68 |
| Фланец ГОСТ 12821-80 1-20-16 ст.3 (20) | 105 | 75 | 38 | 26 | 18 | 36 | 0,87 | |||
| Фланец ГОСТ 12821-80 1-25-16 ст.3 (20) | 115 | 85 | 45 | 33 | 25 | 38 | 1,05 | |||
| Фланец ГОСТ 12821-80 1-32-16 ст.3 (20) | 135 | 100 | 18 | 55 | 39 | 31 | 13 | 40 | 1,54 | |
| Фланец ГОСТ 12821-80 1-40-16 ст.3 (20) | 145 | 110 | 64 | 46 | 38 | 42 | 1,85 | |||
| Фланец ГОСТ 12821-80 1-50-16 ст.3 (20) | 160 | 125 | 76 | 58 | 49 | 45 | 2,28 | |||
| Фланец ГОСТ 12821-80 1-65-16 ст.3 (20) | 180 | 145 | 94 | 77 | 66 | 15 | 47 | 3,19 | ||
| Фланец ГОСТ 12821-80 1-80-16 ст.3 (20) | 195 | 160 | 110 | 90 | 78 | 17 | 50 | 4,21 | ||
| Фланец ГОСТ 12821-80 1-100-16 ст.3 (20) | 215 | 180 | 130 | 110 | 96 | 8 | 4,9 | |||
| Фланец ГОСТ 12821-80 1-125-16 ст.3 (20) | 245 | 210 | 156 | 135 | 121 | 19 | 57 | 6,75 | ||
| Фланец ГОСТ 12821-80 1-150-16 ст.3 (20) | 280 | 240 | 22 | 180 | 161 | 146 | 8,3 | |||
| Фланец ГОСТ 12821-80 1-200-16 ст.3 (20) | 335 | 295 | 240 | 222 | 202 | 21 | 58 | 12 | 11,79 | |
| Фланец ГОСТ 12821-80 1-250-16 ст.3 (20) | 405 | 355 | 26 | 292 | 278 | 254 | 23 | 65 | 17,36 | |
| Фланец ГОСТ 12821-80 1-300-16 ст.3 (20) | 460 | 410 | 346 | 330 | 303 | 24 | 66 | 22,76 | ||
| Фланец ГОСТ 12821-80 1-350-16 ст.3 (20) | 520 | 470 | 400 | 382 | 351 | 28 | 70 | 16 | 32,04 | |
| Фланец ГОСТ 12821-80 1-400-16 ст.3 (20) | 580 | 525 | 30 | 450 | 432 | 398 | 32 | 75 | 43 | |
| Фланец ГОСТ 12821-80 1-500-16 ст.3 (20) | 710 | 650 | 33 | 559 | 535 | 501 | 38 | 90 | 20 | 70,97 |
| Фланец ГОСТ 12821-80 1-600-16 ст.3 (20) | 840 | 770 | 39 | 660 | 636 | 602 | 41 | 99,3 | ||
| Фланец ГОСТ 12821-80 1-800-16 ст.3 (20) | 1020 | 950 | 850 | 826 | 792 | 45 | 95 | 24 | 130,57 | |
| Фланец ГОСТ 12821-80 1-1000-16 ст.3 (20) | 1255 | 1170 | 45 | 1060 | 1028 | 992 | 49 | 110 | 28 | 203,39 |
| Фланец ГОСТ 12821-80 1-1200-16 ст.3 (20) | 1485 | 1390 | 52 | 1268 | 1228 | 1192 | 51 | 125 | 32 | 284,94 |
| Проход условный Dy | d1 | b | h4 | Dm | Dn | Масса, кг | ||||
| с соединительным выступом | с выступом | с впадиной | с шипом | с пазом | ||||||
| 10 | 8 | 12 | 33 | 26 | 15 | 0,59 | 0,60 | 0,58 | 0,59 | 0,58 |
| 15 | 12 | 30 | 19 | 0,68 | 0,68 | 0,65 | 0,67 | 0,66 | ||
| 20 | 18 | 36 | 28 | 26 | 0,87 | 0,87 | 0,82 | 0,85 | 0,84 | |
| 25 | 25 | 38 | 45 | 33 | 1,05 | 1,05 | 0,99 | 1,03 | 1,02 | |
| 32 | 31 | 13 | 40 | 55 | 39 | 1,54 | 1,54 | 1,48 | 1,50 | 1,50 |
| 40 | 38 | 42 | 64 | 46 | 1,85 | 1,81 | 1,77 | 1,77 | 1,81 | |
| 50 | 49 | 45 | 76 | 58 | 2,28 | 2,24 | 2,16 | 2,17 | 2,23 | |
| 65 | 66 | 15 | 47 | 94 | 77 | 3,19 | 3,17 | 3,05 | 3,06 | 3,14 |
| 80 | 78 | 17 | 50 | 110 | 90 | 4,21 | 4,15 | 4,04 | 4,06 | 4,17 |
| 100 | 96 | 130 | 110 | 4,90 | 4,80 | 4,65 | 4,72 | 4,78 | ||
| 125 | 121 | 19 | 57 | 156 | 135 | 6,75 | 6,76 | 6,47 | 6,55 | 6,66 |
| 150 | 146 | 180 | 161 | 8,30 | 8,28 | 7,88 | 7,96 | 8,08 | ||
| -175 | 177 | 21 | 210 | 196 | 10,37 | 9,79 | 9,32 | 10,05 | 10,17 | |
| 200 | 202 | 58 | 240 | 222 | 11,79 | 11,72 | 11,28 | 11,04 | 11,20 | |
| -225 | 226 | 65 | 268 | 248 | 14,12 | 14,48 | 13,55 | 13,60 | 13,70 | |
| 250 | 254 | 23 | 292 | 278 | 17,36 | 15,00 | 14,30 | 16,67 | 16,86 | |
| 300 | 303 | 24 | 66 | 346 | 330 | 22,76 | 22,65 | 20,83 | 21,60 | 22,10 |
| 350 | 351 | 28 | 70 | 400 | 382 | 32,04 | 32,00 | 29,43 | 30,60 | 33,10 |
| 400 | 398 | 32 | 75 | 450 | 432 | 43,00 | 42,64 | 41,10 | 41,00 | 41,70 |
| -450 | 450 | 34 | 85 | 506 | 484 | 54,00 | 53,50 | 52,20 | 51,40 | 52,40 |
| 500 | 501 | 38 | 90 | 559 | 535 | 70,97 | 70,32 | 69,00 | 68,00 | 69,90 |
| 600 | 602 | 41 | 660 | 636 | 99,30 | 97,81 | 96,73 | 94,50 | 96,60 | |
| -700 | 692 | 43 | 95 | 750 | 726 | 105,90 | 105,97 | 102,00 | 100,70 | 101,10 |
| 800 | 792 | 45 | 850 | 826 | 130,57 | 118,79 | 115,00 | 124,80 | 127,6 | |
| -900 | 892 | 47 | 110 | 958 | 926 | 157,83 | – | – | – | – |
| 1000 | 992 | 49 | 1060 | 1028 | 203,39 | |||||
| 1200 | 1192 | 51 | 125 | 1268 | 1228 | 284,94 | ||||
Dimensions of GOST/ГОСТ 12821 Welding neck flange PN25 2.5Mpa
| Давление PN = 2,5 МПа (25 кгс/с м²) | ||||||||||
| Наименование | D, мм | D1, мм | d, мм | Dm, мм | Dn, мм | d1, мм | b, мм | h4, мм | к-во отв. n, шт. | Масса, кг |
| Фланец ГОСТ 12821-80 1-15-25 ст.3 (20) | 95 | 65 | 14 | 30 | 19 | 12 | 14 | 33 | 4 | 0,79 |
| Фланец ГОСТ 12821-80 1-20-25 ст.3 (20) | 105 | 75 | 38 | 26 | 18 | 34 | 0,97 | |||
| Фланец ГОСТ 12821-80 1-25-25 ст.3 (20) | 115 | 85 | 45 | 33 | 25 | 36 | 1,18 | |||
| Фланец ГОСТ 12821-80 1-32-25 ст.3 (20) | 135 | 100 | 18 | 56 | 39 | 31 | 16 | 43 | 1,83 | |
| Фланец ГОСТ 12821-80 1-40-25 ст.3 (20) | 145 | 110 | 64 | 46 | 38 | 45 | 2,19 | |||
| Фланец ГОСТ 12821-80 1-50-25 ст.3 (20) | 160 | 125 | 76 | 58 | 49 | 17 | 2,78 | |||
| Фланец ГОСТ 12821-80 1-65-25 ст.3 (20) | 180 | 145 | 96 | 77 | 66 | 19 | 50 | 8 | 3,71 | |
| Фланец ГОСТ 12821-80 1-80-25 ст.3 (20) | 195 | 160 | 110 | 90 | 78 | 52 | 4,44 | |||
| Фланец ГОСТ 12821-80 1-100-25 ст.3 (20) | 230 | 190 | 22 | 132 | 110 | 96 | 21 | 58 | 6,51 | |
| Фланец ГОСТ 12821-80 1-125-25 ст.3 (20) | 270 | 220 | 26 | 160 | 135 | 121 | 23 | 65 | 9,41 | |
| Фланец ГОСТ 12821-80 1-150-25 ст.3 (20) | 300 | 250 | 186 | 161 | 146 | 25 | 68 | 12,52 | ||
| Фланец ГОСТ 12821-80 1-200-25 ст.3 (20) | 360 | 310 | 245 | 222 | 202 | 27 | 75 | 12 | 17,44 | |
| Фланец ГОСТ 12821-80 1-250-25 ст.3 (20) | 425 | 370 | 30 | 300 | 278 | 254 | 29 | 24,4 | ||
| Фланец ГОСТ 12821-80 1-300-25 ст.3 (20) | 485 | 430 | 352 | 330 | 303 | 32 | 80 | 16 | 33,29 | |
| Фланец ГОСТ 12821-80 1-350-25 ст.3 (20) | 550 | 490 | 33 | 406 | 382 | 351 | 36 | 85 | 46,57 | |
| Фланец ГОСТ 12821-80 1-400-25 ст.3 (20) | 610 | 550 | 464 | 432 | 398 | 40 | 100 | 64,81 | ||
| Фланец ГОСТ 12821-80 1-500-25 ст.3 (20) | 730 | 660 | 39 | 570 | 535 | 500 | 44 | 20 | 88,91 | |
| Фланец ГОСТ 12821-80 1-600-25 ст.3 (20) | 840 | 770 | 670 | 636 | 600 | 49 | 115 | 123,7 | ||
| Фланец ГОСТ 12821-80 1-800-25 ст.3 (20) | 1075 | 990 | 45 | 874 | 826 | 790 | 55 | 135 | 24 | 213,9 |
| Фланец ГОСТ 12821-80 1-1000-25 ст.3 (20) | 1315 | 1210 | 56 | 1084 | 1028 | 992 | 59 | 150 | 28 | 312,12 |
| Фланец ГОСТ 12821-80 1-1200-25 ст.3 (20) | 1525 | 1420 | 1288 | 1228 | 1192 | 62 | 160 | 32 | 387,5 | |
| Проход условный Dy | d1 | b | h4 | Dm | Dn | Масса, кг | ||||
| с соединительным выступом | с выступом | с впадиной | с шипом | с пазом | ||||||
| 10 | 8 | 14 | 33 | 26 | 15 | 0,68 | 0,69 | 0,66 | 0,68 | 0,67 |
| 15 | 12 | 30 | 19 | 0,79 | 0,78 | 0,75 | 0,80 | 0,78 | ||
| 20 | 18 | 34 | 38 | 26 | 0,97 | 0,99 | 0,93 | 0,97 | 0,95 | |
| 25 | 25 | 36 | 45 | 33 | 1,18 | 1,19 | 1,13 | 1,16 | 1,15 | |
| 32 | 31 | 16 | 43 | 56 | 39 | 1,83 | 1,85 | 1,78 | 1,81 | 1,80 |
| 40 | 38 | 45 | 64 | 46 | 2,19 | 2,16 | 2,10 | 2,11 | 2,15 | |
| 50 | 49 | 17 | 76 | 58 | 2,78 | 2,76 | 2,47 | 2,69 | 2,75 | |
| 65 | 66 | 19 | 50 | 96 | 77 | 3,71 | 3,62 | 3,60 | 3,55 | 3,62 |
| 80 | 78 | 52 | 110 | 90 | 4,44 | 4,32 | 4,27 | 4,26 | 4,48 | |
| 100 | 96 | 21 | 58 | 132 | 110 | 6,51 | 6,58 | 6,27 | 6,41 | 6,49 |
| 125 | 121 | 23 | 65 | 160 | 135 | 9,41 | 9,45 | 9,14 | 9,27 | 9,37 |
| 150 | 146 | 25 | 68 | 186 | 161 | 12,52 | 12,56 | 11,90 | 12,01 | 12,17 |
| -175 | 177 | 70 | 216 | 196 | 13,88 | 13,94 | 13,63 | 13,65 | 13,83 | |
| 200 | 202 | 27 | 75 | 245 | 222 | 17,44 | 17,21 | 16,86 | 16,36 | 16,62 |
| -225 | 226 | 29 | 270 | 248 | 21,56 | 21,68 | 21,15 | 22,54 | 22,86 | |
| 250 | 254 | 300 | 278 | 24,40 | 24,08 | 23,27 | 25,37 | 25,74 | ||
| 300 | 303 | 32 | 80 | 352 | 330 | 33,29 | 32,40 | 31,94 | 32,42 | 33,16 |
| 350 | 351 | 36 | 85 | 406 | 382 | 46,57 | 45,60 | 44,68 | 45,40 | 46,23 |
| 400 | 398 | 40 | 100 | 464 | 432 | 64,81 | 63,58 | 62,41 | 63,48 | 64,59 |
| -450 | 450 | 42 | 515 | 484 | 72,26 | 71,60 | 70,70 | 70,80 | 71,95 | |
| 500 | 500 | 44 | 570 | 535 | 88,91 | 88,20 | 86,50 | 86,48 | 88,08 | |
| 600 | 600 | 49 | 115 | 670 | 636 | 123,70 | 122,00 | 105,70 | 119,50 | 122,17 |
| -700 | 690 | 53 | 125 | 766 | 726 | 166,81 | 164,02 | 162,70 | 157,53 | 160,82 |
| 800 | 790 | 55 | 135 | 874 | 826 | 213,90 | 211,00 | 209,00 | 210,00 | 214,68 |
| -900 | 892 | 57 | 145 | 980 | 926 | 252,91 | – | – | – | – |
| 1000 | 992 | 59 | 150 | 1084 | 1028 | 312,12 | ||||
| 1200 | 1192 | 62 | 160 | 1288 | 1228 | 387,50 | ||||
Dimensions of GOST/ГОСТ 12821 Welding neck flange PN40 4.0Mpa
| Давление PN = 4,0 МПа (40 кгс/с м²) | ||||||||||
| Наименование | D, мм | D1, мм | d, мм | Dm, мм | Dn, мм | d1, мм | b, мм | h4, мм | к-во отв. n, шт. | Масса, кг |
| Фланец воротниковый ГОСТ 12821-80 1-15-40 ст.3 (20) | 95 | 65 | 14 | 30 | 19 | 12 | 14 | 33 | 4 | 0,79 |
| Фланец воротниковый ГОСТ 12821-80 1-20-40 ст.3 (20) | 105 | 75 | 38 | 26 | 18 | 34 | 0,97 | |||
| Фланец воротниковый ГОСТ 12821-80 1-25-40 ст.3 (20) | 115 | 85 | 45 | 33 | 25 | 36 | 1,18 | |||
| Фланец воротниковый ГОСТ 12821-80 1-32-40 ст.3 (20) | 135 | 100 | 18 | 56 | 39 | 31 | 16 | 43 | 1,83 | |
| Фланец воротниковый ГОСТ 12821-80 1-40-40 ст.3 (20) | 145 | 110 | 64 | 46 | 38 | 45 | 2,19 | |||
| Фланец воротниковый ГОСТ 12821-80 1-50-40 ст.3 (20) | 160 | 125 | 76 | 58 | 48 | 17 | 2,81 | |||
| Фланец воротниковый ГОСТ 12821-80 1-65-40 ст.3 (20) | 180 | 145 | 96 | 77 | 66 | 19 | 50 | 8 | 3,71 | |
| Фланец воротниковый ГОСТ 12821-80 1-80-40 ст.3 (20) | 195 | 160 | 112 | 90 | 78 | 21 | 55 | 4,8 | ||
| Фланец воротниковый ГОСТ 12821-80 1-100-40 ст.3 (20) | 230 | 190 | 22 | 138 | 110 | 96 | 23 | 65 | 7,4 | |
| Фланец воротниковый ГОСТ 12821-80 1-125-40 ст.3 (20) | 270 | 220 | 26 | 160 | 135 | 120 | 25 | 10 | ||
| Фланец воротниковый ГОСТ 12821-80 1-150-40 ст.3 (20) | 300 | 250 | 186 | 161 | 145 | 27 | 68 | 13,03 | ||
| Фланец воротниковый ГОСТ 12821-80 1-200-40 ст.3 (20) | 375 | 320 | 30 | 250 | 222 | 200 | 35 | 85 | 12 | 24,44 |
| Фланец воротниковый ГОСТ 12821-80 1-250-40 ст.3 (20) | 445 | 385 | 33 | 310 | 278 | 252 | 39 | 98 | 37,59 | |
| Фланец воротниковый ГОСТ 12821-80 1-300-40 ст.3 (20) | 510 | 450 | 368 | 330 | 301 | 42 | 112 | 16 | 57,1 | |
| Фланец воротниковый ГОСТ 12821-80 1-350-40 ст.3 (20) | 570 | 510 | 481 | 382 | 351 | 48 | 116 | 70,34 | ||
| Фланец воротниковый ГОСТ 12821-80 1-400-40 ст.3 (20) | 655 | 585 | 39 | 480 | 432 | 398 | 54 | 135 | 106,76 | |
| Фланец воротниковый ГОСТ 12821-80 1-500-40 ст.3 (20) | 755 | 670 | 45 | 580 | 535 | 495 | 58 | 140 | 20 | 132,33 |
| Фланец воротниковый ГОСТ 12821-80 1-600-40 ст.3 (20) | 890 | 795 | 52 | 686 | 636 | 595 | 180,95 | |||
| Фланец воротниковый ГОСТ 12821-80 1-800-40 ст.3 (20) | 1135 | 1030 | 56 | 908 | 826 | 795 | 71 | 190 | 24 | 343,69 |
| Фланец воротниковый ГОСТ12821-80 1-1000-40 ст.3 (20) | 1360 | 1250 | 1140 | 1028 | 995 | 77 | 235 | 28 | 540,75 | |
| Фланец воротниковый ГОСТ12821-80 1-1200-40 ст.3 (20) | 1575 | 1460 | 62 | 1350 | 1228 | 1195 | 80 | 250 | 32 | 690,59 |
| Проход условный Dy | d1 | b | h4 | Dm | Dn | Масса, кг | ||||
| с соединительным выступом | с выступом | с впадиной | с шипом | с пазом | ||||||
| 10 | 8 | 14 | 33 | 26 | 15 | 0,68 | 0,69 | 0,66 | 0,68 | 0,67 |
| 15 | 12 | 30 | 19 | 0,79 | 0,78 | 0,75 | 0,80 | 0,78 | ||
| 20 | 18 | 34 | 38 | 26 | 0,97 | 0,99 | 0,93 | 0,97 | 0,95 | |
| 25 | 25 | 36 | 45 | 33 | 1,18 | 1,19 | 1,13 | 1,16 | 1,15 | |
| 32 | 31 | 16 | 43 | 56 | 39 | 1,83 | 1,85 | 1,78 | 1,81 | 1,86 |
| 40 | 38 | 45 | 64 | 46 | 2,19 | 2,16 | 2,10 | 2,11 | 2,15 | |
| 50 | 48 | 17 | 76 | 58 | 2,81 | 2,79 | 2,68 | 2,72 | 2,78 | |
| 65 | 66 | 19 | 50 | 96 | 77 | 3,71 | 3,72 | 3,59 | 3,60 | 3,68 |
| 80 | 78 | 21 | 55 | 112 | 90 | 4,80 | 4,81 | 4,60 | 4,69 | 4,80 |
| 100 | 96 | 23 | 65 | 138 | 110 | 7,40 | 7,06 | 6,82 | 7,20 | 7,28 |
| 125 | 120 | 25 | 160 | 135 | 10,00 | 10,17 | 9,48 | 9,97 | 10,08 | |
| 150 | 145 | 27 | 68 | 186 | 161 | 13,03 | 13,20 | 12,60 | 12,86 | 13,03 |
| -175 | 177 | 33 | 85 | 226 | 196 | 20,75 | 21,26 | 21,10 | 19,70 | 20,00 |
| 200 | 200 | 35 | 250 | 222 | 24,44 | 24,00 | 23,57 | 24,20 | 24,00 | |
| -225 | 226 | 37 | 95 | 280 | 248 | 31,33 | 31,10 | 30,50 | 31,20 | 31,60 |
| 250 | 252 | 39 | 98 | 310 | 278 | 37,59 | 37,30 | 36,50 | 36,90 | 37,40 |
| 300 | 301 | 42 | 112 | 368 | 330 | 57,10 | 50,60 | 50,30 | 51,10 | 52,20 |
| 350 | 351 | 48 | 116 | 418 | 382 | 70,34 | 69,60 | 68,00 | 68,10 | 68,80 |
| 400 | 398 | 54 | 135 | 480 | 432 | 106,76 | 105,50 | 105,00 | 103,80 | 106,00 |
| -450 | 448 | 56 | 530 | 484 | 107,00 | 106,00 | 104,80 | 103,80 | 105,00 | |
| 500 | 495 | 58 | 140 | 580 | 535 | 132,33 | 128,00 | 126,00 | 128,00 | 130,00 |
| 600 | 595 | 58 | 686 | 636 | 180,95 | 195,08 | 165,78 | 182,02 | 179,81 | |
| -700 | 695 | 63 | 160 | 790 | 726 | 228,25 | 246,86 | 209,59 | 229,47 | 226,93 |
| 800 | 795 | 71 | 190 | 908 | 826 | 343,69 | 367,40 | 319,93 | 345,08 | 342,20 |
| -900 | 895 | 74 | 215 | 1024 | 926 | 436,54 | – | – | – | – |
| 1000 | 995 | 77 | 235 | 1140 | 1028 | 540,75 | ||||
| 1200 | 1195 | 80 | 250 | 1350 | 1228 | 690,59 | ||||
Dimensions of GOST/ГОСТ 12821 Welding neck flange PN63 6.3Mpa
| Dn, мм | D, мм | D1, мм | d, мм | Dm, мм | Dn, мм | d1, мм | b, мм | h4, мм | n-￠ | кg |
| 15 | 105 | 75 | 14 | 38 | 19 | 12 | 16 | 46 | 4 | 1,15 |
| 20 | 125 | 90 | 18 | 48 | 26 | 18 | 18 | 54 | 4 | 1,80 |
| 25 | 135 | 100 | 18 | 52 | 33 | 25 | 20 | 56 | 4 | 2,30 |
| 32 | 150 | 110 | 22 | 64 | 39 | 31 | 21 | 60 | 4 | 2,94 |
| 40 | 165 | 125 | 22 | 74 | 46 | 37 | 21 | 65 | 4 | 3,75 |
| 50 | 175 | 135 | 22 | 86 | 58 | 47 | 23 | 67 | 4 | 4,63 |
| 65 | 200 | 160 | 22 | 106 | 77 | 64 | 25 | 72 | 8 | 6,29 |
| 80 | 210 | 170 | 22 | 120 | 90 | 77 | 27 | 72 | 8 | 7,22 |
| 100 | 250 | 200 | 26 | 140 | 110 | 94 | 29 | 77 | 8 | 10,71 |
| 125 | 295 | 240 | 30 | 172 | 135 | 118 | 33 | 95 | 8 | 17,13 |
| 150 | 340 | 280 | 33 | 206 | 161 | 142 | 35 | 105 | 8 | 24,60 |
| 200 | 405 | 345 | 33 | 264 | 222 | 198 | 41 | 110 | 12 | 36,60 |
| 250 | 470 | 400 | 39 | 316 | 278 | 246 | 45 | 115 | 12 | 50,89 |
| 300 | 530 | 460 | 39 | 370 | 330 | 294 | 50 | 120 | 16 | 68,15 |
| 350 | 595 | 525 | 39 | 430 | 382 | 342 | 56 | 140 | 16 | 98,68 |
| 400 | 670 | 585 | 45 | 484 | 432 | 386 | 62 | 155 | 16 | 135,80 |
| 500 | 800 | 705 | 52 | 594 | 535 | 485 | 66 | 165 | 20 | 192,74 |
| 600 | 925 | 820 | 56 | 704 | 636 | 585 | 71 | 180 | 20 | 269,27 |
| 800 | 1165 | 1050 | 62 | 920 | 826 | 785 | 85 | 225 | 24 | 463,87 |
| 1000 | 1415 | 1290 | 70 | 1160 | 1028 | 985 | 92 | 280 | 28 | 980,60 |
| 1200 | 1 665 | 1 530 | 78 | 1386 | 1 228 | 1185 | 95 | 315 | 32 | 1 263,72 |
Dimensions of GOST/ГОСТ 12821 Welding neck flange PN100 10Mpa
| Dn, мм | D, мм | D1, мм | d, мм | Dm, мм | Dn, мм | d1, мм | b, мм | h4, мм | n-￠ | кg |
| 15 | 105 | 75 | 14 | 38 | 19 | 12 | 18 | 46 | 4 | 1,26 |
| 20 | 125 | 90 | 18 | 48 | 26 | 18 | 20 | 51 | 4 | 1,98 |
| 25 | 135 | 100 | 18 | 52 | 33 | 25 | 22 | 56 | 4 | 2,48 |
| 32 | 150 | 110 | 22 | 64 | 39 | 31 | 60 | 4 | 3,05 | |
| 40 | 165 | 125 | 22 | 76 | 46 | 37 | 23 | 67 | 4 | 4,06 |
| 50 | 195 | 145 | 26 | 86 | 58 | 45 | 25 | 68 | 4 | 6,03 |
| 65 | 220 | 170 | 26 | 110 | 77 | 62 | 29 | 80 | 8 | 8,52 |
| 80 | 230 | 180 | 26 | 124 | 90 | 75 | 31 | 87 | 8 | 9,91 |
| 100 | 265 | 210 | 30 | 146 | 110 | 92 | 35 | 97 | 8 | 14,65 |
| 125 | 310 | 250 | 33 | 180 | 135 | 112 | 39 | 112 | 8 | 23,32 |
| 150 | 350 | 290 | 33 | 214 | 161 | 136 | 43 | 125 | 12 | 32,87 |
| 200 | 430 | 360 | 39 | 276 | 222 | 190 | 51 | 140 | 12 | 54,24 |
| 250 | 500 | 430 | 39 | 340 | 278 | 236 | 57 | 160 | 12 | 85,24 |
| 300 | 585 | 500 | 45 | 400 | 330 | 248 | 66 | 180 | 16 | 127,78 |
| 350 | 655 | 560 | 52 | 460 | 382 | 332 | 72 | 195 | 16 | 170,94 |
| 400 | 715 | 620 | 52 | 510 | 432 | 376 | 76 | 200 | 16 | 216,44 |
Dimensions of GOST/ГОСТ 12836 Blind Flange PN10 1.0Mpa
Dimensions in mm
| NPS | WEIGHT PER KG | D | D1 | NO OF HOLES | h | D4 | b | D3 | D2 | h1 |
| 15 | 95 | 65 | 45 | 12 | 10 | 14 | 2 | 2 | 4 | 0.43 |
| 20 | 105 | 75 | 58 | 12 | 16 | 14 | 2 | 2 | 4 | 0.55 |
| 25 | 115 | 85 | 68 | 12 | 22 | 14 | 2 | 2 | 4 | 0.67 |
| 32 | 135 | 100 | 78 | 12 | 28 | 18 | 2 | 2 | 4 | 0.91 |
| 40 | 145 | 110 | 88 | 14 | 36 | 18 | 3 | 2 | 4 | 1.24 |
| 50 | 160 | 125 | 102 | 14 | 46 | 18 | 3 | 2 | 4 | 1.55 |
| 65 | 180 | 145 | 122 | 14 | 60 | 18 | 3 | 2 | 4 | 2.04 |
| 80 | 195 | 160 | 138 | 14 | 76 | 18 | 3 | 2 | 4 | 2.44 |
| 100 | 215 | 180 | 158 | 14 | 94 | 18 | 3 | 2 | 8 | 2.97 |
| 125 | 245 | 210 | 188 | 16 | 118 | 18 | 3 | 2 | 8 | 4.69 |
| 150 | 280 | 240 | 212 | 16 | 142 | 23 | 3 | 2 | 8 | 6.07 |
| 200 | 335 | 295 | 268 | 16 | 196 | 23 | 3 | 2 | 8 | 9.09 |
| 250 | 390 | 350 | 320 | 18 | 244 | 23 | 3 | 2 | 12 | 14.26 |
| 300 | 440 | 400 | 370 | 20 | 294 | 23 | 4 | 3 | 12 | 19.88 |
| 350 | 500 | 460 | 430 | 24 | 344 | 23 | 4 | 3 | 16 | 31.94 |
| 400 | 565 | 515 | 482 | 26 | 390 | 27 | 4 | 3 | 16 | 44.43 |
| 500 | 670 | 620 | 585 | 30 | 490 | 27 | 4 | 3 | 20 | 74.31 |
| 600 | 780 | 725 | 685 | 34 | 590 | 30 | 5 | 4 | 20 | 119.3 |
| 800 | 1010 | 950 | 905 | 42 | 780 | 33 | 5 | 4 | 24 | 242.1 |
| 1000 | 1220 | 1160 | 1110 | 50 | 980 | 33 | 5 | 4 | 28 | 429.6 |
| 1200 | 1455 | 1380 | 1325 | 55 | 1180 | 40 | 5 | 4 | 32 | 673.1 |
Dimensions of GOST/ГОСТ 12836 Blind Flange PN16 1.6Mpa
Dimensions in mm
| NPS | WEIGHT PER KG | D | D1 | NO OF HOLES | h | D4 | b | D3 | D2 | h1 |
| 15 | 95 | 65 | 45 | 12 | 10 | 14 | 2 | 2 | 4 | 0.43 |
| 20 | 105 | 75 | 58 | 12 | 16 | 14 | 2 | 2 | 4 | 0.55 |
| 25 | 115 | 85 | 68 | 12 | 22 | 14 | 2 | 2 | 4 | 0.67 |
| 32 | 135 | 100 | 78 | 12 | 28 | 18 | 2 | 2 | 4 | 0.91 |
| 40 | 145 | 110 | 88 | 14 | 36 | 18 | 3 | 2 | 4 | 1.24 |
| 50 | 160 | 125 | 102 | 14 | 46 | 18 | 3 | 2 | 4 | 1.55 |
| 65 | 180 | 145 | 122 | 14 | 60 | 18 | 3 | 2 | 4 | 2.04 |
| 80 | 195 | 160 | 138 | 14 | 76 | 18 | 3 | 2 | 4 | 2.44 |
| 100 | 215 | 180 | 158 | 16 | 94 | 18 | 3 | 2 | 8 | 3.51 |
| 125 | 245 | 210 | 188 | 16 | 118 | 18 | 3 | 2 | 8 | 4.69 |
| 150 | 280 | 240 | 212 | 18 | 142 | 23 | 3 | 2 | 8 | 6.99 |
| 200 | 335 | 295 | 268 | 20 | 196 | 23 | 3 | 2 | 12 | 11.49 |
| 250 | 390 | 355 | 320 | 24 | 244 | 27 | 3 | 2 | 12 | 19.74 |
| 300 | 405 | 410 | 378 | 28 | 294 | 27 | 4 | 3 | 12 | 29.58 |
| 350 | 460 | 470 | 438 | 32 | 344 | 27 | 4 | 3 | 16 | 44.22 |
| 400 | 520 | 525 | 490 | 34 | 390 | 30 | 4 | 3 | 16 | 59.86 |
| 500 | 580 | 650 | 610 | 40 | 490 | 33 | 4 | 3 | 20 | 102.7 |
| 600 | 710 | 770 | 720 | 45 | 590 | 40 | 5 | 4 | 20 | 162 |
| 800 | 840 | 950 | 900 | 52 | 780 | 40 | 5 | 4 | 24 | 300.6 |
| 1000 | 1020 | 1170 | 1110 | 63 | 980 | 46 | 5 | 4 | 28 | 542.2 |
| 1200 | 1485 | 1390 | 1325 | 75 | 1180 | 52 | 5 | 4 | 32 | 922.2 |
Dimensions of GOST/ГОСТ 12836 Blind Flange PN25 2.5Mpa
Dimensions in mm
| NPS | WEIGHT PER KG | D | D1 | NO OF HOLES | h | D4 | b | D3 | D2 | h1 |
| 15 | 95 | 65 | 45 | 12 | 10 | 14 | 2 | 2 | 4 | 0.43 |
| 20 | 105 | 75 | 58 | 12 | 16 | 14 | 2 | 2 | 4 | 0.55 |
| 25 | 115 | 85 | 68 | 12 | 22 | 14 | 2 | 2 | 4 | 0.67 |
| 32 | 135 | 100 | 78 | 12 | 28 | 18 | 2 | 2 | 4 | 0.91 |
| 40 | 145 | 110 | 88 | 14 | 36 | 18 | 3 | 2 | 4 | 1.24 |
| 50 | 160 | 125 | 102 | 14 | 46 | 18 | 3 | 2 | 4 | 1.55 |
| 65 | 180 | 145 | 122 | 16 | 60 | 18 | 3 | 2 | 8 | 2.29 |
| 80 | 195 | 160 | 138 | 18 | 76 | 18 | 3 | 2 | 8 | 3.21 |
| 100 | 230 | 190 | 162 | 20 | 94 | 23 | 3 | 2 | 8 | 5.07 |
| 125 | 270 | 220 | 188 | 22 | 118 | 27 | 3 | 2 | 8 | 7.83 |
| 150 | 300 | 250 | 218 | 24 | 142 | 27 | 3 | 2 | 8 | 10.95 |
| 200 | 360 | 310 | 278 | 26 | 196 | 27 | 3 | 2 | 12 | 17.51 |
| 250 | 425 | 370 | 335 | 30 | 244 | 30 | 3 | 2 | 12 | 28.93 |
| 300 | 485 | 430 | 390 | 34 | 294 | 30 | 4 | 3 | 16 | 42 |
| 350 | 550 | 490 | 450 | 38 | 344 | 33 | 4 | 3 | 16 | 61.48 |
| 400 | 610 | 550 | 505 | 40 | 390 | 33 | 4 | 3 | 16 | 81.12 |
| 500 | 730 | 660 | 615 | 48 | 490 | 40 | 4 | 3 | 20 | 140.2 |
| 600 | 840 | 770 | 720 | 50 | 590 | 40 | 5 | 4 | 20 | 194.5 |
| 800 | 1075 | 990 | 930 | 63 | 780 | 46 | 5 | 4 | 24 | 409.1 |
Dimensions of GOST/ГОСТ 12836 Blind Flange PN40 4.0Mpa
Dimensions in mm
| NPS | WEIGHT PER KG | D | D1 | NO OF HOLES | h | D4 | b | D3 | D2 | h1 |
| 15 | 95 | 65 | 45 | 16 | 10 | 14 | 2 | 2 | 4 | 0.63 |
| 20 | 105 | 75 | 58 | 16 | 16 | 14 | 2 | 2 | 4 | 0.8 |
| 25 | 115 | 85 | 68 | 16 | 22 | 14 | 2 | 2 | 4 | 0.98 |
| 32 | 135 | 100 | 78 | 16 | 28 | 18 | 2 | 2 | 4 | 1.33 |
| 40 | 145 | 110 | 88 | 16 | 36 | 18 | 3 | 2 | 4 | 1.49 |
| 50 | 160 | 125 | 102 | 18 | 46 | 18 | 3 | 2 | 4 | 2.15 |
| 65 | 180 | 145 | 122 | 20 | 60 | 18 | 3 | 2 | 8 | 3.03 |
| 80 | 195 | 160 | 138 | 22 | 76 | 18 | 3 | 2 | 8 | 4.08 |
| 100 | 230 | 190 | 162 | 24 | 94 | 23 | 3 | 2 | 8 | 6.27 |
| 125 | 270 | 220 | 188 | 28 | 118 | 27 | 3 | 2 | 8 | 10.31 |
| 150 | 300 | 250 | 218 | 30 | 142 | 27 | 3 | 2 | 8 | 14.07 |
| 200 | 375 | 320 | 280 | 38 | 196 | 30 | 3 | 2 | 12 | 28.3 |
| 250 | 445 | 385 | 345 | 45 | 244 | 33 | 3 | 2 | 12 | 48.5 |
| 300 | 510 | 450 | 410 | 48 | 294 | 33 | 4 | 3 | 16 | 66.99 |
| 350 | 570 | 510 | 465 | 50 | 344 | 33 | 4 | 3 | 16 | 88.9 |
| 400 | 655 | 585 | 535 | 56 | 390 | 40 | 4 | 3 | 16 | 131.6 |
| 500 | 755 | 670 | 615 | 70 | 490 | 46 | 4 | 3 | 20 | 218.7 |
Manufacturing process of GOST flanges
GOST flanges can be produced by forging, casting, cutting or rolling. We mainly produce flanges by forging, cutting and rolling processes.
Manufacturing process of GOST forged flange
The forging process usually includes the following processes, i.e. selection of high quality billets, heating, forming and cooling.
- Raw material inspection – The key raw material used to produce flanges is billet or hot rolled bar stock. All raw materials purchased are supplied with test reports in accordance with British Standards with full traceability. This is the first mandatory step in the flange production process to ensure good quality. The raw materials are retested in-house to ensure chemical composition, mechanical properties and metallographic analysis.
- Cutting of raw materials – Correct and strict control of cutting sizes and proportions ensures full cost control.
- Heating – This is a very important step for the quality of the flanges. It is necessary to keep detailed records of heating temperatures to avoid overheating. Overheating can damage the structure of the metal and the mechanical properties of the raw material.
- Forging – The forging process is divided into free forging and die forging. The forging time and strength of flanges vary for different pressure classes.
- Heat treatment-The purpose of heat treatment is to eliminate the stress inside the flange and make the density more uniform. Careful recording of heat treatment temperature and cooling time is the key.
- Inspection of forging blanks – After the heat treatment process, select batch samples are tested again for chemical composition and mechanical properties to ensure that all items pass.
- Machining of forging blanks – During machining, inspection is performed along with machining to ensure that each part of the flange is qualified. Machining is performed on CNC and/or lathes.
- Finished Product Inspection – The finished product will be inspected 100% prior to delivery to ensure that the goods meet GOST, ASME, EN or customer standards.
- Documented Documentation – The entire production process and quality checks at different levels are documented according to ISO compliant standard operating procedures. This is the guarantee of good quality.
- Test certificates: As we are an GOST, ISO and PED certified manufacturer, we can issue test certificates for all goods upon delivery and inspection in accordance with British Standards.
- Packaging: All forgings and flanges are packed in wooden boxes or crates or pallets to ensure safe movement of the goods.
Production process of GOST casting flange
The production process of a GOST casting flange typically involves several steps, including the creation of a mold or pattern, the casting of the flange using molten metal, and various finishing and quality control steps. To begin the process, a mold or pattern is created using a material such as wood or metal. This mold or pattern will be used to create the shape of the flange, and will typically be made to precise specifications to ensure that the final product meets the desired dimensions and specifications. Once the mold or pattern is ready, the casting process can begin. This typically involves melting the metal that will be used to create the flange, such as iron or steel, and pouring the molten metal into the mold or pattern. The metal is then allowed to cool and solidify, taking on the shape of the mold or pattern. After the casting process is complete, the flange will typically undergo various finishing and quality control steps. This may include machining or grinding to achieve the desired dimensions and surface finish, as well as testing to ensure that the flange meets the required specifications and standards. Overall, the production process for a GOST casting flange is a highly precise and technical process that requires a thorough understanding of metallurgy, casting techniques, and quality control processes.
Manufacturing process of GOST plate cutting flange
The process here is relatively simple, and the key raw material is hot rolled plate. The process is mainly used to produce lower thickness sliding plate flanges and blind flanges. All plates purchased are accompanied by a test certificate to GOST Standards. The circles are cut from the plates. No heat treatment is involved in the flange manufacturing process. Drilling and machining is carried out on the circles to obtain the required dimensions. The goods are visually inspected and marked in accordance with the relevant standards.
Marking of GOST Flanges
There are several different types of GOST flanges, including welding neck flanges, plate flanges, and blind flanges. Each type of flange has its own specific markings that are used to identify the size, material, and other important information about the flange. The markings on GOST flanges typically include the flange type, size, pressure rating, material, and manufacturer’s name or symbol. For example, a GOST 12820-80 flange might be marked with the following information:
- Flange type: Welding neck flange
- Size: DN100 (100mm diameter)
- Pressure rating: PN16 (16 bar)
- Material: stainless steel
- Manufacturer’s name or symbol: PN
It’s important to carefully read and understand the markings on a GOST flange to ensure that it is suitable for the intended application and meets the necessary technical and safety requirements.
Packing of GOST Flanges
When packing GOST flanges for shipping or storage, it is important to ensure that they are properly protected to prevent damage. Here are some general guidelines for packing GOST flanges:
- First, clean the flanges to remove any dirt, dust, or debris that may have accumulated on them.
- Next, wrap each flange individually in a layer of protective material, such as bubble wrap or foam sheets.
- Place the wrapped flanges in a sturdy cardboard box or wooden crate, and fill any empty space with additional padding to prevent the flanges from shifting during transport.
- If the flanges are particularly large or heavy, it may be necessary to use additional packaging materials, such as wooden slats or metal bands, to provide extra support.
- Finally, close and seal the box or crate securely to protect the flanges from the elements and any potential damage during shipping.
It is also a good idea to label the package with the contents and destination, as well as any other relevant information, to ensure that the flanges are delivered to the correct location.
Inspection and measurement of GOST Flanges
There are several ways to inspect and measure GOST flanges, including visual inspection, dimensional inspection and pressure testing. Visual inspection involves checking the flange for any visible defects or damage, such as cracks, dents or corrosion. Dimensional inspection involves measuring the dimensions of the flange to ensure it meets the specified tolerances. This can be done with a variety of tools such as calipers, micrometers and gauges. Pressure testing involves subjecting the flange to a specified pressure to ensure that it can withstand the expected operating conditions. This is usually accomplished using hydraulic or pneumatic presses and manometers. It is important to carefully inspect and measure GOST flanges to ensure that they are of high quality and suitable for their intended use. Defective or improperly sized flanges may cause leaks or other problems in the piping system.
Application of GOST Flanges
GOST flanges are flanges that comply with GOST standard 33259-2015 “Flanges and their joints. Types, dimensions and technical requirements” of the standard flange types. These GOST standard flanges are used in various industries, such as:
- GOST standard flanges in stainless steel for oil and gas pipelines.
- GOST standard flanges for the chemical industry.
- GOST standard flanges in alloy steel for pipelines.
- GOST standard flanges for heating.
- GOST standard pipe flanges for water supply systems.
- GOST standard flanges for power plants.
- GOST standard flanges for the paper and pulp industry.
- The use of GOST standard flanges in general purpose applications.
- GOST standard flanges in steel for manufacturing.
- GOST standard flanges for use in the food processing industry.
- GOST standard flanges for structural piping.
Overall, GOST flanges are an important part of many piping systems used to connect and seal pipes, valves and other equipment. They are reliable and durable and are ideally suited for use in a variety of industrial applications.
How to purchase the correct GOST flanges?
To purchase the correct GOST flange, you need to consider several factors, including the size and type of flange, the material of manufacture, and the pressure and temperature ratings it is designed to handle.
The following are some of the steps in purchasing the correct GOST flange.
- Determine the size of the flange required: GOST flanges come in a variety of sizes, from small flanges for use in low pressure systems to large flanges for high pressure applications. Measure the diameter of the pipe or other component to which the flange will be connected and select a flange that fits that size.
- Select the type of flange required: GOST flanges are available in a variety of types, including butt-weld flanges, blind flanges and flat flanges. Depending on the method of connection, the type of load the flange will be subjected to, and any other relevant factors, select the type of flange best suited to your application.
- Selecting Materials: GOST flanges can be made from a variety of materials, including carbon steel, stainless steel and other alloys. Choose the material best suited for your application based on pressure and temperature ratings, the corrosiveness of the fluid being conveyed, and any other relevant factors.
- Consider pressure and temperature ratings: GOST flanges are rated for a specific pressure and temperature range. Select a flange whose pressure and temperature ratings will be affected by the conditions in your application.
- Consider any other requirements: Depending on your application, you may have other requirements for GOST flanges, such as specific surface finishes or coatings. It is important to consider these requirements when purchasing a flange.
- By performing these steps, you can ensure that you purchase the correct GOST flange for your application.
- Once you have determined the type, size, material, pressure rating and any other requirements of the GOST flange, you can begin your search for a supplier that offers the flange you need. It is important to select a reputable supplier that can provide quality flanges that meet the required standards.
How to select GOST flanges manufacturer?
When selecting a manufacturer for a GOST flange, several factors need to be considered.
- Quality: It is important to choose a manufacturer that produces high quality flanges that meet GOST standards. This can be determined through research, such as seeking certification or seeking advice from other industry professionals.
- Compliance: Ensure that the manufacturer meets the necessary regulatory standards and requirements, including the GOST standard.
- Availability: Consider whether the manufacturer has sufficient supply of the specific type and size of flange required, as well as the ability to deliver the flange in a timely manner.
- Experience: It is beneficial to select a manufacturer with experience in GOST flange production, as they will have the necessary knowledge and expertise to meet your specific needs.
- Capacity: Ensure that the manufacturer has the capacity to meet your capacity and delivery requirements.
- Price: Consider the cost of the flange, but keep in mind that the lowest price is not always the best option. It is important to find a balance between price and quality.
- Customer service: Look for a manufacturer with good customer service, as this may help if you have any questions or problems during the ordering process or after you receive the flange.
- Location: Consider the manufacturer’s location in relation to your business, as this can affect shipping times and costs.
- Delivery: Consider the manufacturer’s delivery time and availability. Choose a manufacturer that can deliver flanges in a timely manner and can accommodate any changes to your delivery schedule.
It may also be helpful to seek the advice of other industry professionals or request samples of the manufacturer’s products to assess the quality and suitability for a particular application.
Export Country For GOST Flanges
| MIDDLE EAST | AFRICA | NORTH AMERICA | EUROPE | ASIA | SOUTH AMERICA |
| Saudi Arabia | Nigeria | Usa | Russia | India | Argentina |
| Iran | Algeria | Canada | Norway | Singapore | Bolivia |
| Iraq | Angola | Mexico | Germany | Malaysia | Brazil |
| Uae | South Africa | Panama | France | Indonesia | Chile |
| Qatar | Libya | Costa Rica | Italy | Thailand | Venezuela |
| Bahrain | Egypt | Puerto Rica | Uk | Vietnam | Colombia |
| Oman | Sudan | Trinidad And Tobago | Spain | South Korea | Ecuador |
| Kuwait | Equatorial Guinea | Jamaica | Ukraine | Japan | Guyana |
| Turkey | The Republic Of Congo | Bahamas | Netherland | Sri Lanka | Paraguay |
| Yemen | Gabon | Denmark | Belgium | Maldives | Uruguay |
| Syria | Greece | Bangladesh | |||
| Jordan | Czech Republic | Mayanmar | |||
| Cyprus | Portugal | Taiwan | |||
| Hungary | Cambodia | ||||
| Albania | |||||
| Austria | |||||
| Switzerland | |||||
| Slovakia | |||||
| Finland | |||||
| Ireland | |||||
| Croatia | |||||
| Slovenia | |||||
| Malta |