SANS/ SABS 1123 Flanges

Understanding your choice of SANS/ SABS 1123 flanges options

SANS (South African National Standard) and SABS (South African Bureau of Standards) are standards organizations based in South Africa that develop and maintain technical standards for various industries, including the manufacturing of flanges.
SANS/SABS 1123 is a standard for flanges that specifies various dimensions, materials, and pressure ratings for flanges used in piping systems.
When choosing SANS/SABS 1123 flanges, it’s important to consider factors such as the type of fluid or gas being transported, the pressure and temperature of the system, and the compatibility of the flange material with the pipe material.

What are SANS/ SABS 1123 flanges?

SANS/ SABS 1123 flanges are a type of standardized flange used in South Africa for connecting pipes and equipment in industries where reliability, safety, and durability are essential.

What are the different types of SANS/ SABS 1123 flanges?

Flanges come in many different types and styles, but some common types of SANS/ SABS 1123 flanges include:

Types of SANS/ SABS 1123 flanges

It’s critical to be aware of the various flange types available to you if you’re in the market for some. A standard known as SANS/ SABS 1123 details the five primary types of flanges that are required in South Africa.
Welding Neck Flange
A welding neck flange is a type of flange that has a long, tapered hub that is welded to the pipe. This flange is designed to be used with butt-welded pipe connections and is known for its strength and durability. The long neck on this flange provides a smooth transition from the pipe to the flange and helps to reduce turbulence and erosion in the pipeline.
Slip-On FF Flange
A slip-on FF (flat face) flange is a type of flange that slips over the end of the pipe and is then welded in place. This flange is easy to install and is often used in applications where the piping system needs to be disassembled and reassembled frequently. The flat face on this flange provides a smooth surface for the gasket to seal against.
Threaded Screwed Flange
A threaded screwed flange is a type of flange that has threads on the inside diameter of the flange. This flange is screwed onto the pipe and is used in applications where it is necessary to disassemble and reassemble the piping system frequently. The threads on this flange provide a secure connection between the pipe and the flange.
Slip-On Bossed Flange
A slip-on bossed flange is a type of flange that has a raised section, or boss, that extends from the flange face. This flange is used in applications where the piping system needs to be easily disassembled and reassembled. The raised boss on this flange provides additional support to the pipe and helps to prevent it from slipping out of the flange.
Blind Flange
A blind flange is a type of flange that is used to close the end of a piping system. This flange is often used when a piping system needs to be tested or when a section of the pipeline needs to be isolated. The blind flange is designed to be bolted onto the end of the pipe and has no opening or bore.
Each type of SANS/ SABS 1123 flange has its own unique characteristics and is best suited for certain applications. When selecting a flange, it’s important to consider factors such as the type of piping system, the pressure and temperature of the system, and the frequency with which the system needs to be disassembled and reassembled. By understanding the different types of flanges available, you can make an informed decision about which one is the best fit for your project.

Advantages and disadvantages of SANS/ SABS 1123 flanges

Flanges are an essential component in piping systems used to connect pipes, valves, and other equipment. The SANS/ SABS 1123 flange is a South African standard used in a wide range of industries. While these flanges have their advantages, they also come with some disadvantages. In this post, we will discuss both the advantages and disadvantages of SANS/ SABS 1123 flanges.
Advantages of SANS/ SABS 1123 Flanges

• Durability: SANS/ SABS 1123 flanges are made from high-quality materials that are resistant to wear and tear. This makes them durable and long-lasting, which is crucial in industries that require continuous operation.
• Cost-effective: SANS/ SABS 1123 flanges are relatively affordable compared to other flange types in the market. This makes them an ideal choice for industries that are operating on a tight budget.
• Easy to install: SANS/ SABS 1123 flanges are easy to install, which reduces the installation time and cost. They also do not require any specialized equipment, making them accessible to everyone.
• High pressure and temperature resistance: SANS/ SABS 1123 flanges are designed to withstand high pressure and temperature. This makes them suitable for industries that require high-pressure applications such as chemical plants, oil and gas, and power generation.
• Wide range of sizes: SANS/ SABS 1123 flanges come in a wide range of sizes, making them suitable for different piping systems. They are also available in different pressure ratings to meet different requirements.

Disadvantages of SANS/ SABS 1123 Flanges

• Limited availability: SANS/ SABS 1123 flanges are not as widely available as other flange types. This makes them difficult to find in some regions.
• Restricted use: SANS/ SABS 1123 flanges are only used in South Africa, which limits their use in other parts of the world. This can make it difficult for companies that operate internationally to find replacement parts.
• Higher weight: SANS/ SABS 1123 flanges are relatively heavier than other flange types. This can make them difficult to handle during installation and maintenance.
• Corrosion: SANS/ SABS 1123 flanges are susceptible to corrosion when exposed to certain environments. This can compromise their integrity, leading to potential leaks and failures.
• Lack of flexibility: SANS/ SABS 1123 flanges are not as flexible as other flange types. This can make them unsuitable for applications that require flexibility, such as in some HVAC systems.

SANS/ SABS 1123 flanges have both advantages and disadvantages. They are durable, cost-effective, and easy to install, making them an ideal choice for many industries. However, they are limited in availability, restricted in use, heavier, susceptible to corrosion, and lack flexibility. Companies should consider these factors before choosing SANS/ SABS 1123 flanges for their piping systems.

Flange Face Finish

Flange face finish is a crucial factor in ensuring proper sealing between flange connections. There are several types of flange face finishes available, each with its unique characteristics and benefits.
Types of Flange Face Finish
One type of flange face finish is the serrated finish. This finish is created by machining a series of grooves into the flange face, providing better grip and improved sealing when compressed. Serrated finishes are commonly used in applications where the flange connection may be subject to vibration or movement.
Another type of flange face finish is the stock finish. This is the default finish provided by the manufacturer, and it typically has a smooth surface. While it may not offer the same grip as a serrated finish, a stock finish is suitable for many standard applications.

Spiral serrated finishes feature a spiral pattern of grooves that helps to distribute stress evenly across the flange face. This can help to prevent damage and distortion, which can lead to leaks or other issues.

Concentric serrated finishes are similar to spiral serrated finishes but feature a series of concentric rings around the flange face. This pattern can provide enhanced sealing and grip compared to other types of serrated finishes.

Finally, a smooth finish is another option for flange face finish. Smooth finishes are often used in applications where the flange connection is not subject to significant movement or vibration. While it may not offer the same grip as a serrated finish, a smooth finish can still provide a reliable seal in many standard applications.

For example:

Machining of gasket faces of flanges to a smooth finish of Ra = 3.2 – 6.3 micrometer (= 125 – 250 microinches AARH)

• AARH stands for Arithmetic Average Roughness Height. It is used to measure the roughness (rather smoothness) of surfaces. 125 AARH means 125 micro inches will be the average height of the ups and downs of the surface.
• 63 AARH is specified for Ring Type Joints.
• 125-250 AARH (it is called smooth finish) is specified for Spiral Wound Gaskets.
• 250-500 AARH (it is called stock finish) is specified for soft gaskets such as NON Asbestos, Graphite sheets, Elastomers etc. If we use smooth finish for soft gaskets enough “biting effect” will not occur and hence the joint may develop leak.
• Sometimes AARH is referred also as Ra which stands for Roughness Average and means the same.

Selecting the appropriate flange face finish is essential to ensuring a proper seal between flange connections. Whether you choose a serrated finish, stock finish, spiral serrated, concentric serrated, or smooth finish, it is important to consider the specific application and potential stresses that the flange connection may face. By selecting the right finish for the job, you can help to prevent leaks and other issues that can lead to costly downtime and repairs.

Standard Specication For SANS/ SABS 1123 Flanges

• Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, SANS/ SABS 1123, ASA, API-605, AWWA, Custom Drawings
• Size : 1/2″ (15 NB) to 48″ (1200NB)
• Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
• DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629,
• DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
• BS : BS4504 , BS4504, BS1560, BS10
• Flange Face Type : Flate Face (FF), Raised Face(RF), Ring Type Joint (RTJ)

Material of SANS/ SABS 1123 Flanges

SANS/ SABS 1123 Flanges are typically made from a variety of materials, depending on the specific application and desired property. some common materials for SANS/ SABS 1123 Flanges include steel, stainless steel, cast iron, brass, and aluminum. Material selection is typically based on factors such as temperature, pressure, corrosiveness of the fluid or gas being conveyed, and any regulatory requirements or industry standards that may apply. Some common materials used for SANS/ SABS 1123 flanges include:

Stainless Steel SANS/ SABS 1123 Flange	ASTM/ASME A/SA182:- F304, F304L, F316, F316L, ASTM/ASME A/SA351:- CF3, CF3M, CF8, CF8M, DIN 1.4306, DIN 1.4301, DIN 1.4404, DIN 1.4401, DIN 1.4408, DIN 1.4308, DIN 1.4306, DIN 1.4409
Duplex SANS/ SABS 1123 Flange	S31803 / S32205 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex SANS/ SABS 1123 Flange	S32750 / S32760 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Copper Nickel SANS/ SABS 1123 Flange	ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Titanium SANS/ SABS 1123 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
Copper SANS/ SABS 1123 Flange	TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000, C12200, C12300, T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910, C10920, 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
Incoloy SANS/ SABS 1123 Flange	ASTM B564 / ASME SB564:- Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925
Inconel SANS/ SABS 1123 Flange	ASTM B564 / ASME SB564:- Inconel 600, 601, 625, 718, 783, 690, x750
Nickel SANS/ SABS 1123 Flange	ASTM B564 / ASME SB564:- Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Hastelloy SANS/ SABS 1123 Flange	ASTM B564 / ASME SB564:- Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X
Monel SANS/ SABS 1123 Flange	ASTM B564 / ASME SB564:- Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Carbon Steel SANS/ SABS 1123 Flange	ASTM/ASME A/SA105 A/SA105N and A/SA216-WCB, DIN 1.0460, DIN 1.0402, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, CS High Yield ASTM A694 / A694 (F52, F56, F60, F65, F70, F80)
Alloy Steel SANS/ SABS 1123 Flange	ASTM A182 / ASME SA182:- F5, F9, F11, F12, F22, F91
Alloy 20 SANS/ SABS 1123 Flange	ASTM B462 / ASME SB462:- Carpenter 20 Alloy, Alloy 20Cb-3
254 SMO SANS/ SABS 1123 Flange	ASTM A182 / ASME SA182:- SMO 254/6Mo, UNS S31254, DIN 1.4547
Aluminium SANS/ SABS 1123 Flange	5052 /6061/ 6063 / 2017 / 7075 / etc.
Brass SANS/ SABS 1123 Flange	3602 / 2604 / H59 / H62 / etc.
Other SANS/ SABS 1123 Flange material	Tin bronze, Alumunum bronze, Lead bronze, Nimonic 75, Nimonic 80A, Nimonic 90, AISI 4140, AISI 4130, Mild Steel, Al6XN

Material options for SANS/SABS 1123 flanges

• Carbon steel: Carbon steel is the most commonly used material for SANS/SABS 1123 flanges. It is cost-effective, has good mechanical properties, and is easily weldable. The carbon content in the steel determines its strength and durability.
• Stainless steel: Stainless steel is a popular material for flanges used in corrosive environments. It is a steel alloy with a minimum of 10.5% chromium, which gives it excellent corrosion resistance. There are different grades of stainless steel available, each with varying properties, making it important to select the right grade for the specific application.
• Alloy steel: Alloy steel is a steel that has additional alloying elements added to it, such as chromium, nickel, or molybdenum. These elements enhance the strength, hardness, and corrosion resistance of the steel. Alloy steel is commonly used in high-temperature and high-pressure applications.
• Duplex and super duplex steel: Duplex and super duplex steel are alloys that offer high strength and excellent corrosion resistance. These materials are particularly useful in harsh environments, such as offshore oil and gas production.

Properties of SANS/SABS 1123 flange materials
The choice of material for SANS/SABS 1123 flanges depends on the specific application and the conditions under which the flange will be used. The following are some of the properties to consider when selecting a material:

• Strength: The material should be strong enough to handle the forces and pressures exerted on the flange.
• Corrosion resistance: The material should be able to resist corrosion in the specific environment in which it will be used.
• Temperature resistance: The material should be able to withstand the high temperatures and thermal cycling that may occur.
• Weldability: The material should be easy to weld to ensure a secure connection between the flange and other components.

SANS/SABS 1123 flanges are available in a range of materials, each with their own unique properties. Carbon steel is the most commonly used material, while stainless steel, alloy steel, and duplex/super duplex steel are used in more demanding applications. When selecting a material for SANS/SABS 1123 flanges, it is important to consider the specific application and the properties required for the material to perform effectively.

Size of SANS/ SABS 1123 Flanges

SANS/ SABS 1123 flanges are typically available in sizes ranging from NB10 to NB600 in diameter. However, the exact size availability may vary depending on the manufacturer and the specific requirements of the application.

Dimensions of SANS/ SABS 1123 Flanges

SANS/ SABS 1123 flanges are available in various dimensions and pressure ratings. The flange dimensions are typically specified by the nominal pipe size (NPS), flange facing type, and pressure class. Common NPS sizes for SANS/ SABS 1123 flanges range from 22″ to 60″, and pressure classes range from 150 to 900. The facing types can be flat face, raised face, or RTJ (ring type joint). The dimensions and tolerances for SANS/ SABS 1123 flanges are specified in the standard.

Dimensions of SABS 1123 Flange Class 600

Nominal pressure 600 kPa											600/2 = Table 4				600/4 = Table 6
											600/3 = Table 5				600/8 = Table 8
Nom. Size	Pipe OD	Flange							Raised face		Bolting	Drilling			Neck			Boss
	d1	D	b	b1	b2	b3	h	h1	d4	f		No.	d2	k	d3	h2	r	d5
10	17.2	75	8	10	8	10	16	28	35	2	M10	4	11	50	26	6	4	25
15	21.3	80	8	10	8	10	16	30	40	2	M10	4	11	55	30	6	4	30
20	26.9	90	8	10	8	10	18	32	50	2	M10	4	11	65	38	6	4	40
25	33.7	100	8	10	8	10	18	35	60	2	M10	4	11	75	42	6	4	50
32	42.4	120	8	10	8	10	20	35	70	2	M12	4	14	90	55	6	6	60
40	48.3	130	8	10	8	10	20	38	80	3	M12	4	14	100	62	7	6	70
50	60.3	140	8	10	8	10	22	38	90	3	M12	4	14	110	74	8	6	80
65	76.1	160	8	10	8	10	26	38	110	3	M12	4	14	130	88	9	6	100
80	88.9	190	10	10	10	10	28	42	128	3	M16	4	18	150	102	10	8	110
100	114.3	210	10	10	10	10	34	45	148	3	M16	4	18	170	130	10	8	130
150	168.3	265	13	12	13	12	39	48	202	3	M16	8	18	225	184	12	10	185
*125	139.7	240	13	12	13	12	39	48	178	3	M16	8	18	200	155	10	8	160
*175	193.7	295	13	14	–	14	–	52	230	3	M16	8	18	255	210	12	10	–
200	219.1	320	13	14	–	14	–	55	258	3	M16	8	18	280	236	15	10	–
*225	244.5	345	16	16	–	16	–	58	285	3	M16	8	18	305	264	15	12	–
250	273	375	16	16	–	16	–	60	312	3	M16	12	18	335	290	15	12	–
300	323.9	440	20	20	–	20	–	62	365	4	M20	12	22	395	342	15	12	–
350	355.6	490	22	22	–	22	–	62	415	4	M20	12	22	445	385	15	12	–
400	406.4	540	22	22	–	22	–	65	465	4	M20	16	22	495	438	15	12	–
450	457.2	595	24	25	–	25	–	65	520	4	M20	16	22	550	492	15	12	–
500	508	645	24	25	–	25	–	68	570	4	M20	20	22	600	538	15	12	–
550	559	705	24	–	–	28	–	68	620	5	M24	20	26	655	590	16	12	–
600	609.6	755	24	30	–	30	–	70	670	5	M24	20	26	655	590	16	12	–

* Non-preferred size

Dimensions of SABS 1123 Flange Class 1000

Nominal pressure 1000 kPa											1000/2 = Table 9				1000/4 = Table 11
											1000/3 = Table 10				1000/8 = Table 12
Nom. Size	Pipe OD	Flange							Raised face		Bolting	Drilling			Neck			Boss
	d1	D	b	b1	b2	b3	h	h1	d4	f		No.	d2	k	d3	h2	r	d5
10	17.2	90	8	10	8	10	14	35	40	2	M12	4	14	60	28	6	4	30
15	21.3	95	8	10	8	10	14	35	45	2	M12	4	14	65	32	6	4	35
20	26.9	105	8	10	8	10	16	38	58	2	M12	4	14	75	40	6	4	45
25	33.7	115	8	10	8	10	16	38	68	2	M12	4	14	85	46	6	4	52
32	42.4	140	10	10	10	10	20	40	78	2	M16	4	18	100	56	6	6	60
40	48.3	150	10	10	10	10	20	42	88	3	M16	4	18	110	64	7	6	70
50	60.3	165	12	10	10	12	20	45	102	3	M16	4	18	125	75	8	6	85
65	73	185	12	12	12	12	26	45	122	3	M16	4	18	145	90	10	6	105
80	88.9	200	14	12	12	14	26	50	138	3	M16	8	18	160	105	10	8	118
100	114.3	220	14	12	12	14	32	52	158	3	M16	8	18	180	131	12	8	140
*125	141.3	250	16	14	14	16	36	55	188	3	M16	8	18	210	156	12	8	168
150	168.3	285	18	16	16	18	38	55	212	3	M20	8	22	240	184	12	10	195
*175	193.7	315	18	16	–	18	–	60	242	3	M20	8	22	270	210	12	10	–
200	219.1	340	18	18	–	18	–	62	268	3	M20	8	22	295	235	16	10	–
*225	244.5	370	18	18	–	18	–	62	290	3	M20	8	22	325	265	16	10	–
250	273	395	20	20	–	20	–	68	320	3	M20	12	22	350	292	16	12	–
300	323.9	445	22	22	–	22	–	68	370	4	M20	12	22	400	344	16	12	–
350	355.6	505	26	25	–	25	–	68	430	4	M20	16	22	460	385	16	12	–
400	406.4	565	26	25	–	25	–	72	482	4	M24	16	26	515	400	16	12	–
450	457.2	615	28	30	–	30	–	72	532	4	M24	20	26	565	492	16	12	–
500	508	670	28	32	–	32	–	75	585	4	M24	20	26	620	542	16	12	–
550	559	730	28	35	–	35	–	80	635	5	M24	20	26	675	592	18	12	–
600	609.6	780	28	38	–	38	–	80	685	5	M24	20	26	725	642	18	12	–

* Non-preferred size

Dimensions of SABS 1123 Flange Class 1600

Nominal pressure 1600 kPa											1600/2 = Table 14				1600/4 = Table 16
											1600/3 = Table 15				1600/8 = Table 18
Nom. Size	Pipe OD	Flange							Raised face		Bolting	Drilling			Neck			Boss
	d1	D	b	b1	b2	b3	h	h1	d4	f		No.	d2	k	d3	h2	r	d5
10	17.2	90	8	10	8	10	14	35	40	2	M12	4	14	60.3	28	6	4	30
15	21.3	95	8	10	8	10	14	35	45	2	M12	4	14	65	32	6	4	35
20	26.9	105	8	10	8	10	16	38	58	2	M12	4	14	75	40	6	4	45
25	33.7	115	8	10	8	10	16	38	68	2	M12	4	14	85	46	6	4	52
32	42.4	140	10	10	10	10	20	40	78	2	M16	4	18	100	56	6	6	60
40	48.3	150	10	10	10	10	20	42	88	3	M16	4	18	110	64	7	6	70
50	60.3	165	12	12	12	12	22	45	102	3	M16	4	18	125	75	8	6	85
65	76.1	185	12	12	12	12	26	45	122	3	M16	4	18	145	90	10	6	105
80	88.9	200	14	14	14	14	28	50	138	3	M16	8	18	160	105	10	8	118
100	114.3	220	14	14	14	14	34	52	158	3	M16	8	18	180	131	12	8	140
*125	141.3	250	22	22	–	–	44	55	188	3	M16	8	18	210	156	12	8	168
150	168.3	285	22	22	–	–	44	55	212	3	M20	8	22	240	184	12	10	195
*175	193.7	315	24	24	–	–	–	60	242	3	M20	8	22	270	210	12	10	–
200	219.1	340	24	24	–	–	44	62	268	3	M20	12	22	295	235	16	10	–
*225	244.5	370	24	22	–	22	–	66	294	3	M20	12	22	325	265	16	10	–
250	273	405	24	25	–	25	–	70	320	3	M24	12	26	355	292	16	12	–
300	323.9	460	28	28	–	28	–	78	378	4	M24	12	26	410	344	16	12	–
350	355.6	520	30	30	–	30	–	82	438	4	M24	16	26	470	390	16	12	–
400	406.4	580	32	35	–	35	–	85	490	4	M24	16	26	525	445	16	12	–
450	457.2	640	34	40	–	40	–	87	550	4	M24	20	26	585	496	16	12	–
500	508	715	34	40	–	40	–	90	610	4	M30	20	33	650	548	16	12	–
550	559	775	36		–	–	–	95	670	5	M30	20	33	710	600	18	12	–
600	609.6	840	36	50	–	–	–	95	725	5	M30	20	33	770	652	18	12	–

* Non-preferred size

Dimensions of SABS 1123 Flange Class 2500

Nominal pressure 2500 kPa											2500/2 = Table 19				2500/4 = Table 21
											2500/3 = Table 20				2500/8 = Table 23
Nom. Size	Pipe OD	Flange							Raised face		Bolting	Drilling			Neck			Boss
	d1	D	b	b1	b2	b3	h	h1	d4	f		No.	d2	k	d3	h2	r	d5
10	17.2	90	12	12	10	12	16	35	40	2	M12	4	14	–	28	6	4	30
15	21.3	95	14	14	11	14	17	38	45	2	M12	4	14	65	32	6	4	35
20	26.9	105	14	14	11	14	19	40	58	2	M12	4	14	75	40	6	4	45
25	33.7	115	16	16	12	16	22	40	68	2	M12	4	14	85	46	6	4	52
32	42.4	140	18	18	14	18	26	42	78	2	M16	4	18	100	55	6	6	60
40	48.3	150	18	20	14	20	28	45	88	3	M16	4	18	110	64	7	6	70
50	60.3	165	20	20	17	20	31	48	102	3	M16	4	18	125	75	8	6	85
65	73	185	22	22	17	22	33	52	122	3	M16	8	18	145	90	10	6	105
80	88.9	200	24	22	18	22	34	58	138	3	M16	8	18	160	105	12	8	118
100	114.3	235	24	25	21	25	41	65	162	3	M20	8	22	190	134	12	8	145
*125	139.7	270	26	28	24	28	46	68	188	3	M24	8	26	220	162	12	8	170
150	168.3	300	28	30	24	30	48	75	218	3	M24	8	26	250	192	12	10	200
*175	193.7	330	30	30	–	25	–	75	248	3	M24	12	26	280	218	15	10	–
200	219.1	360	30	30	–	30	–	80	278	3	M24	12	26	310	244	16	10	–
*225	244.5	395	30	30	–	30	–	84	306	3	M24	12	26	340	270	16	10	–
250	273	425	30	30	–	30	–	88	335	3	M24	12	26	370	298	18	12	–
300	323.9	485	34	32	–	32	–	92	395	4	M24	16	26	430	352	18	12	–
350	355.6	555	38	35	–	35	–	100	450	4	M30	16	33	490	398	20	12	–
400	406.5	620	40	40	–	40	–	110	505	4	M30	16	33	550	452	20	12	–
450	457.2	670	42	45	–	45	–	110	555	4	M30	20	33	600	505	20	12	–
500	508	730	44	50	–	50	–	125	615	4	M30	20	33	660	558	20	12	–
550	559	785	–	55	–	–	–	–	670	5	M36	20	39	710	–	–	–	–
600	609.6	845	46	60	–	–	–	125	720	5	M36	20	39	770	660	20	12	–

* Non-preferred size

Dimensions of SABS 1123 Flange Class 4000

Nominal pressure 4000 kPa											4000/2 = Table 24				4000/4 = Table 26
											4000/3 = Table 25				4000/8 = Table 28
Nom. Size	Pipe OD	Flange							Raised face		Bolting	Drilling			Neck			Boss
	d1	D	b	b1	b2	b3	h	h1	d4	f		No.	d2	k	d3	h2	r	d5
10	17.2	90	12	12	12	12	18	35	40	2	M12	4	14	60	28	6	4	30
15	21.3	95	14	14	14	14	20	38	45	2	M12	4	14	65	32	6	4	35
20	26.9	105	14	14	14	14	22	40	58	2	M12	4	14	75	40	6	4	45
25	33.7	115	16	16	16	16	26	40	68	2	M12	4	14	85	46	6	4	52
32	42.4	140	18	18	18	18	30	42	78	2	M16	4	18	100	55	6	6	60
40	48.3	150	18	20	18	20	32	45	88	3	M16	4	18	110	64	7	6	70
50	60.3	165	20	20	20	20	34	48	102	3	M16	4	18	125	75	8	6	85
65	73	185	22	22	22	22	38	52	122	3	M16	8	18	145	90	10	6	105
80	88.9	200	24	22	24	22	40	58	138	3	M16	8	18	160	105	12	8	118
100	114.3	235	24	25	24	25	44	65	162	3	M20	8	22	190	134	12	8	145
*125	139.7	270	26	28	26	28	48	68	188	3	M24	8	26	220	162	12	8	170
150	168.3	300	28	30	28	30	52	75	218	3	M24	8	26	250	192	120	10	200
*175	193.7	350	32	32	–	32	–	82	260	3	M24	12	26	295	218	15	10	–
200	219.1	375	34	32	–	32	–	88	285	3	M24	12	26	320	244	16	10	–
*225	244.5	420	36	35	–	35	–	100	315	3	M30	12	33	355	275	18	12	–
250	273	450	38	38	–	38	–	105	345	3	M30	12	33	385	306	18	12	–
300	323.9	515	42	40	–	40	–	115	410	4	M30	16	33	450	362	18	12	–
350	355.6	580	46	45	–	45	–	125	465	4	M30	16	33	510	408	20	12	–
400	406.4	660	50	50	–	50	–	135	535	4	M36	16	39	585	462	20	12	–
450	457.2	685	52	60	–	60	–	140	575	4	M36	20	39	610	510	20	12	–
500	508	755	52	70	–	70	–	140	615	4	M36	20	39	670	562	20	12	–
550	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
600	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–

* Non-preferred size

Dimensions of  SABS 1123 T1000/3 Backing Ring Flange

SABS 1123 T1000/3 BACKING RING FLANGE
Pipe OD	ID	OD	Thickness	PCD	No Holes	Hole ID
mm	mm	mm	mm	mm		mm
40		140	10	100	4	18
50		150	10	110	4	18
63		165	12	125	4	18
75		185	12	145	4	18
90		200	12	160	8	18
110		220	12	180	8	18
125		220	12	180	8	18
140		250	14	210	8	18
160		285	16	240	8	22
180		285	16	240	8	22
200		340	18	295	8	22
225		340	18	295	8	22
250		395	18	350	12	22
280		395	20	350	12	22
315		445	22	400	12	22
355		505	25	460	16	22
400		565	25	515	16	26
450		615	30	565	20	26
500		670	30	620	20	26
560		730	35	675	20	26
630		835	36	780	20	26
BS T/D BACKING RING FLANGE
Pipe OD	ID	OD	Thickness	PCD	No Holes	Hole ID
mm	mm	mm	mm	mm		mm
40		120	6	87.3	4	14
50		133.4	6	98.4	4	14
63		152.4	8	114.3	4	18
75		165.1	8	127	4	18
90		184.1	10	146	4	18
110		215.9	10	177.8	4	18
125		215.9	10	177.8	4	18
125 PVC		250	13	209.6	8	18
140		250	13	209.6	8	18
160		279.4	13	235	8	18
180		279.4	13	235	8	18
200		336.6	13	292.1	8	18
225		336.6	13	292.1	8	18
250		406.4	16	355.6	8	22
280		406.4	16	355.6	8	22
315		457.2	20	406.4	12	22
355		527.1	22	469.9	12	26
400		577.9	22	520.7	12	26
450		641.4	25	584.2	12	26
500		705	29	641.4	16	26
560		825.5	30	755.7	16	26
630		825.5	32	755.7	16	26

Manufacturing process of SANS/ SABS 1123 flange

SANS/ SABS 1123 flanges can be produced by forging, casting, cutting or rolling. We mainly produce flanges by forging, cutting and rolling processes.

Manufacturing process of SANS/ SABS 1123 forged flange

The welding neck type flanges shall be forged steel, and the blind flanges may be made from either forged steel or from steel plate.

• 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 SANS/ SABS 1123, ASME, EN or customer standards.
• Documented Documentation – The entire production process and quality checks at different levels are documented according to SANS/ SABS 1123 compliant standard operating procedures. This is the guarantee of good quality.
• Test certificates: As we are an SANS/ SABS 1123 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.

Manufacturing process of SANS/ SABS 1123 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 SANS/ SABS 1123 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 SANS/ SABS 1123 Flanges

SANS/ SABS 1123 flanges are typically marked with certain information to identify the specific type of flange and its characteristics. This information may include the manufacturer’s name or logo, the flange size and rating, the material grade, and any relevant certifications or standards that the flange meets.
For example, an SANS/ SABS 1123 flange may be marked with a size such as “6 inch” to indicate the diameter of the flange, and a rating such as “150#” to indicate the pressure rating of the flange. It may also be marked with a material grade such as “A105” to indicate the type of material the flange is made from, and a certification such as “ASME” to indicate that it meets the standards set by the American Society of Mechanical Engineers. The male flange is usually identified with an “M” or “Male” marking, while the female flange is marked with an “F” or “Female” marking. Additionally, the flange size, pressure rating, and material may also be marked on the flange for further identification and proper installation.
In addition to these markings, SANS/ SABS 1123 flanges may also have other markings such as heat numbers or serial numbers for traceability purposes. These markings may be stamped, laser etched, or otherwise inscribed on the flange to ensure that the flange can be traced back to its manufacturing source if necessary.

Packing of SANS/ SABS 1123 Flanges

How to package SANS/ SABS 1123 flanges? To pack the SANS/ SABS 1123 flange, follow these steps:

When it comes to packaging SANS/ SABS 1123 flanges, it’s important to ensure that they are properly protected and secured during transportation to prevent any damage. We will walk you through some of the key steps to follow when packaging SANS/ SABS 1123 flanges.
Step 1: Clean and Inspect the Flanges
Before packaging the flanges, it’s essential to clean them thoroughly to remove any dust, dirt, or debris that may have accumulated on them. You can use a cloth or brush to clean the flanges and inspect them to ensure they are free from any defects or damages.
Step 2: Choose the Right Packaging Material
The packaging material you choose should be sturdy and able to provide adequate protection to the flanges during transportation. Ideally, you should use a strong cardboard box or wooden crate that can withstand the weight and size of the flanges.
Step 3: Secure the Flanges
Once you have the packaging material ready, you need to secure the flanges to prevent them from moving around or getting damaged during transit. You can use bubble wrap, foam, or any other suitable cushioning material to protect the flanges from impact or shock.
Step 4: Label the Package
Labeling the package correctly is crucial to ensure that it reaches the intended destination without any confusion. You should clearly label the package with the recipient’s address, contact information, and any other necessary details.
Step 5: Arrange for Shipping
After the package is fully prepared and labeled, it’s time to arrange for shipping. You can use a reliable courier or shipping company to ensure that the package is delivered on time and in good condition.
Packaging SANS/ SABS 1123 flanges requires careful planning and attention to detail. By following the above steps, you can ensure that your flanges are properly protected and arrive at their destination safely. Remember to use high-quality packaging materials, secure the flanges properly, and label the package accurately to avoid any mishaps during transportation.

Inspection and measurement of SANS/ SABS 1123 Flanges

There are several factors that need to be considered when inspecting and measuring SANS/ SABS 1123 flanges, including:

Material
The first thing to inspect in a SANS/SABS 1123 flange is the material. The standard specifies that the flanges should be made from materials such as carbon steel, stainless steel, or alloy steel. The material should be free from any defects such as cracks, porosity, or inclusions that can affect the integrity of the flange.
Dimension
The next thing to inspect in a SANS/SABS 1123 flange is its dimension. The standard specifies the dimensions of the flanges based on their nominal size and pressure rating. The flanges should be inspected for their inside and outside diameter, thickness, and overall dimensions to ensure they meet the requirements of the standard.
Surface Finish
The surface finish of a flange is also important. The standard specifies that the flanges should have a smooth and even surface finish to ensure proper sealing of the gasket. Any roughness or irregularities on the surface of the flange can lead to leaks in the piping system.
Bolt Hole Alignment
The bolt holes in a flange should be aligned properly to ensure the bolts can be inserted and tightened correctly. The bolt holes should be inspected to ensure they are in the correct position and are not misaligned.
Bolt Hole Size
The size of the bolt holes is also important. The standard specifies the size of the bolt holes based on the nominal size and pressure rating of the flange. The bolt holes should be inspected to ensure they are the correct size and are not damaged.
Bolt Hole Thread
The threads in the bolt holes are important to ensure the bolts can be screwed in and tightened properly. The threads should be inspected to ensure they are clean and free from any damage or defects.

To inspect and measure SANS/ SABS 1123 flanges, you will need a set of calipers or a micrometer to accurately measure the dimensions of the flange. It is also a good idea to have a torque wrench on hand to ensure that the bolts are tightened to the correct torque specification.

Application of SANS/ SABS 1123 Flanges

SANS/ SABS 1123 Flanges are known to deliver exceptional performance and are generally developed for meeting the demands. These SANS/ SABS 1123 Flange is use in various industries like:

• Stainless Steel SANS/ SABS 1123 Flange uses in Oil and Gas Pipeline;
• SANS/ SABS 1123 Flange uses in Chemical Industry;
• Alloy Steel SANS/ SABS 1123 Flange uses in Plumbing;
• SANS/ SABS 1123 Flange uses in Heating;
• SANS/ SABS 1123 Flange uses in Water Supply Systems;
• SANS/ SABS 1123 Flange uses in Power Plant;
• SANS/ SABS 1123 Flange uses in Paper & Pulp Industry;
• SANS/ SABS 1123 Flange uses in General Purpose Applications;
• Steel SANS/ SABS 1123 Flange uses in Fabrication Industry;
• SANS/ SABS 1123 Flange uses in Food Processing Industry;
• SANS/ SABS 1123 Flange uses in Structural Pipe.

How to purchase the correct SANS/ SABS 1123 flanges?

Are you in the market for SANS/SABS 1123 flanges but don’t know where to start? Don’t worry, you’re not alone. With so many options available, it can be overwhelming to choose the right flanges for your project. We’ll go over some key factors to consider when purchasing SANS/SABS 1123 flanges to ensure that you make the right decision.
Determine the Material Needed
The first step to purchasing the correct SANS/SABS 1123 flanges is to determine the material you need. These flanges are available in a variety of materials, including carbon steel, stainless steel, and alloy steel. The choice of material will depend on the specific application and environmental conditions. If you’re unsure which material to choose, consult with a qualified engineer or supplier to help guide you in making the right decision.
Identify the Flange Type
There are several types of flanges available under the SANS/SABS 1123 standard, including weld-neck, slip-on, blind, threaded, and lap-joint. Each flange type has its unique features and benefits. For example, weld-neck flanges are suitable for high-pressure and high-temperature applications, while slip-on flanges are ideal for low-pressure applications. Consider the application and the system design when selecting the appropriate flange type.
Determine the Flange Size and Pressure Class
Once you have identified the material and flange type, the next step is to determine the size and pressure class of the flange. SANS/SABS 1123 flanges are available in various sizes and pressure ratings, and it’s crucial to select the correct size and pressure class to ensure that the flange can withstand the intended operating conditions. You should consult the system specifications and design to determine the appropriate size and pressure class.
Look for Quality and Certifications
It’s essential to ensure that the SANS/SABS 1123 flanges you purchase are of high quality and come with the necessary certifications. Look for suppliers that have a reputation for delivering high-quality products, and check for relevant certifications, such as ISO 9001, API, and CE, to ensure that the flanges meet industry standards.
Consider the Price
While the price should not be the only factor to consider when purchasing SANS/SABS 1123 flanges, it’s important to compare prices from different suppliers to ensure that you’re getting a fair price. However, remember that the cheapest option may not always be the best quality, so ensure that you’re not compromising on quality in pursuit of lower costs.
Purchasing the correct SANS/SABS 1123 flanges can be challenging, but by considering the factors outlined in this post, you can ensure that you make an informed decision that meets your project requirements. Remember to consult with experts and compare suppliers to ensure that you’re getting a high-quality product at a fair price.

How to select SANS/ SABS 1123 flanges manufacturer?

Selecting the right manufacturer for SANS/SABS 1123 flanges can be a daunting task. With so many options available, it’s easy to get overwhelmed and make the wrong choice. However, choosing the right manufacturer is critical to ensure that you get the best quality flanges that meet your specific needs. We provide some tips to help you select the right SANS/SABS 1123 flanges manufacturer.
Quality of Products
The first factor to consider when selecting a SANS/SABS 1123 flanges manufacturer is the quality of their products. You should look for a manufacturer that uses high-quality materials and follows strict quality control processes to ensure that their products meet the required standards.
Industry Experience
Another factor to consider is the manufacturer’s industry experience. Look for a manufacturer that has been in the industry for a significant period and has a proven track record of delivering high-quality products to their customers. An experienced manufacturer will have a better understanding of the market and the needs of their customers.
Production Capacity
It is also essential to consider the production capacity of the manufacturer. You should look for a manufacturer that has the capacity to produce the required quantity of flanges in a timely manner to meet your project’s needs.
Pricing
Pricing is another crucial factor to consider when selecting a SANS/SABS 1123 flanges manufacturer. While it is essential to look for a manufacturer that offers competitive pricing, it is equally important to consider the quality of their products. Don’t compromise on the quality of the products for the sake of saving a few dollars.
Customer Service
The final factor to consider is the manufacturer’s customer service. Look for a manufacturer that has excellent customer service and is willing to assist you with any queries or concerns you may have. A manufacturer that values their customers will provide a better overall experience.

Choosing the right SANS/SABS 1123 flanges manufacturer is essential to ensure you get high-quality products that meet your needs. Look for a manufacturer with quality certifications, experience, a good reputation, customization capabilities, and a competitive price. By following these tips, you will be able to find the right manufacturer for your flange needs.

Why Choose Jihua to Be Your SABS 1123/SANS 1123 Flange Supplier?

Jihua is a well-established and reputable manufacturer and supplier of SABS 1123/SANS 1123 flanges that has been providing high-quality products to customers worldwide for many years. Here are some reasons why you might choose Jihua to be your SABS 1123/SANS 1123 flange supplier:

• High-quality products: Jihua is committed to providing high-quality SABS 1123/SANS 1123 flanges made from the best materials and manufactured to the highest standards. The company has strict quality control procedures in place to ensure that each product meets or exceeds customer expectations.
• Competitive pricing: Jihua offers competitive pricing on its products, which means you can get high-quality SABS 1123/SANS 1123 flanges at an affordable price.
• Wide range of products: Jihua offers a wide range of SABS 1123/SANS 1123 flanges, including ANSI, DIN, JIS, EN, and other international standards. This means you can find the right product to meet your specific needs.
• Excellent customer service: Jihua is committed to providing excellent customer service and support to all of its customers. The company has a team of experienced professionals who are available to answer any questions or concerns you may have.
• Fast delivery: Jihua understands the importance of timely delivery and works hard to ensure that all orders are shipped out quickly and efficiently.

Jihua is a reliable and trustworthy supplier of SABS 1123/SANS 1123 flanges that can meet your needs and exceed your expectations.

Export Country For SANS/ SABS 1123 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