Swivel Flanges

Understanding your choice of swivel flanges options

A swivel ring flange is a flange whose angle can be adjusted in real time during installation, as opposed to a non-swivel ring flange. Non-swivel ring flanges are also known as fixed flanges and usually consist of a single machined part. Once a non-swivel ring flange is welded to the pipe, the position of the threaded hole used to fasten the connection is fixed, i.e. the angle cannot be adjusted along the circumference of the flange. Swivel ring flanges usually consist of two concentric or coaxial parts, which are usually referred to as the inner and outer flanges. The outer flange usually has bolt holes for fastening the connection, while the inner flange usually needs to be welded to the pipe to be connected. The advantage of a swivel ring flange over a non-swivel ring flange is that the swivel ring flange can be adjusted in real time in its circumferential direction before the installation is complete, so that the bolt holes on the outer ring of the swivel ring flange are aligned with the bolt holes on the flange to be connected, so that the bolts can be inserted and tightened, and the flange can no longer be rotated. When selecting a swivel flange option, it is important to consider your specific application requirements, such as pressure ratings, space constraints, and flexibility during installation. With various options available, there will surely be a swivel flange to meet your needs and budget.

What is a swivel flange?

The swivel ring flange is a two-piece flange widely used in offshore pipelines and offshore industrial applications. The swivel ring flange has a heavy-duty forged welded hub which is secured to a forged ring which can be rotated to act as a weld neck or a companion flange to another flange. In a swivel ring flange, the swivel ring is held in place by the weld hub, which in turn is held in place by the retaining ring. The outer ring of the swivel flange allows the inner ring to be rotated 360° from the center of the flange so that it can be quickly aligned with its mating standard flange to align with the bolt holes. This feature is critical for subsea pipeline operations and allows divers to align bolt holes more quickly and easily.

Why use a swivel ring flange?

Flange is a kind of mechanical parts often used, especially in the pipeline connection, flange is an indispensable part, flange connection is a very common, very common mechanical connection method in the offshore oil projects. In the process of installation in the water, there will be two flange bolt holes can not be aligned, you can choose to choose the flange and the sea pipe welding in the water, or in the shore welding is completed in the water after the rotation of the sea pipe to complete the task of connection, but these two ways of operation, the installation cost, installation difficulties and the amount of work is very large, and the sealing performance does not achieve the desired effect. So we want to invent a swivel ring flange.
This compact swivel ring flange has served the shortcomings of the existing technology in the pipe flange, it has a reasonable structure design, light weight and small size, more conducive to installation, save production costs and processing costs, sealing performance is stronger and a series of advantages, and can also be used to test the relevant test to see if its sealing performance is good.
Swivel ring flange structure design is very reasonable, it contains a swivel body, swivel ring, a hx-type gasket and a side hole test pressure compact flange four parts, where the swivel body is fixed, and the inner body near the bevel place has a groove, and has a fixed gear ring to limit the movement of the swivel ring, swivel ring and test pressure hole with a test pressure compact flange connected together, the overall The overall weight is relatively light, more convenient for installation. This flange in the process of use is very compact fit basically no gaps, greatly improving the overall sealing effect.
Swivel ring flanges are preferred because they do not cause any bolt hole alignment problems during subsea flange installation.

Types of Swivel Flanges

Ring Type Joint (RTJ) Swivel Flanges

Ring Type Joint (RTJ) swivel flanges are essential in high-pressure piping systems. These flanges are specifically designed to withstand extreme pressure and temperature conditions, making them ideal for applications in the oil and gas industry, power generation, and chemical processing plants.
The main characteristic of RTJ swivel flanges is the presence of a metal ring gasket, which ensures a tight seal between the flange and the mating pipe. This metal ring gasket, often made of stainless steel, Inconel, or other high-strength materials, fits into a groove on the flange face, providing a highly reliable seal.
Advantages of RTJ Swivel Flanges

• Exceptional sealing performance under high-pressure conditions;
• Resistant to temperature fluctuations and corrosive environments;
• Enhanced durability and longevity.

Raised Face (RF) Swivel Flanges

Raised Face (RF) swivel flanges are widely used in piping systems across various industries. These flanges feature a raised surface on the flange face, which creates a tight seal when compressed by the mating flange and the appropriate gasket.
RF swivel flanges are highly versatile and can be used in various applications, including water treatment facilities, petrochemical plants, and food processing facilities. They are available in different materials, such as carbon steel, stainless steel, and alloy steel, to suit specific project requirements.
Advantages of RF Swivel Flanges

• Versatile and suitable for a wide range of applications;
• Excellent sealing performance with various gasket materials;
• Easy to install and maintain.

Flat Face (FF) Swivel Flanges

Flat Face (FF) swivel flanges are designed with a flat surface on the face, allowing for smooth, even contact between the mating flanges. These flanges are commonly used in low-pressure applications and can be found in industries such as water distribution, HVAC, and plumbing systems.
FF swivel flanges are compatible with different materials, including cast iron, ductile iron, and PVC. They can also accommodate various gasket materials, providing a flexible and cost-effective solution for low-pressure applications.
Advantages of FF Swivel Flanges

• Ideal for low-pressure applications;
• Compatible with a variety of materials and gasket types;
• Cost-effective and easy to install.

Materials of Swivel Flanges

Depending on the specific application requirements, swivel flanges are made from a variety of metal materials, including:

Titanium Swivel 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 Swivel 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
Copper Nickel Swivel Flange	ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Carbon Steel Swivel Flange	ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 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)
Stainless Steel Swivel Flange	ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409
Alloy Steel Swivel Flange	ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91
Hastelloy Swivel Flange	ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X
Brass Swivel Flange	3602 / 2604 / H59 / H62 / etc.
Inconel Swivel Flange	ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750
Monel Swivel Flange	ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Duplex Swivel Flange	S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex Swivel Flange	S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Alloy 20 Swivel Flange	ASTM B462 / ASME SB462, Carpenter 20 Alloy, Alloy 20Cb-3
Aluminium Swivel Flange	5052 /6061/ 6063 / 2017 / 7075 / etc.
Nickel Swivel Flange	ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Nimonic Swivel Flange	Nimonic 75, Nimonic 80A, Nimonic 90
Other Swivel Flange material	Tin bronze, Alumunum bronze, Lead bronze
Incoloy Swivel Flange	ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925
254 Smo Swivel Flange	ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DIN 1.4547

Standards of Swivel Ring Flanges

The details of swivel ring flange standards, including ANSI/ASME B16.5, API 6A, and API 17D, provide you with a wealth of knowledge on these critical components.

ANSI/ASME B16.5 Swivel Ring Flange

The ANSI/ASME B16.5 Swivel Ring Flange is a popular and widely used standard in the industrial piping sector. Developed by the American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME), this standard ensures swivel ring flanges’ proper functioning, safety, and durability. The B16.5 standard covers pressure and temperature ratings, dimensions, tolerances, marking, and material requirements for flanges with a nominal pipe size (NPS) ranging from 1/2″ to 24″.
API 6A Swivel Ring Flange
The API 6A Swivel Ring Flange standard, designed by the American Petroleum Institute (API), is intended explicitly for high-pressure applications in the oil and gas industry. These flanges ensure a safe and reliable connection in wellhead equipment, subsea production systems, and other critical infrastructure. The API 6A standard outlines various factors, including material selection, testing protocols, and performance requirements for swivel ring flanges operating under extreme pressures and temperatures.
API 17D Swivel Ring Flange
The API 17D Swivel Ring Flange is the go-to standard for subsea production systems. Developed by the American Petroleum Institute, API 17D is a comprehensive guide that covers the design, material selection, fabrication, and testing of subsea wellhead and tree equipment. This standard is crucial for ensuring the safety and integrity of subsea production systems, minimizing the risk of failure, and maintaining optimal performance in harsh offshore environments.
NORSOK L005 Swivel Ring Flange
The NORSOK L005 Swivel Ring Flange is another vital oil and gas industry standard tailored explicitly for use in the Norwegian Continental Shelf. Developed by the Norwegian petroleum industry, NORSOK L005 provides stringent requirements for compact flanges, swivel ring flanges, and other piping components. This standard ensures the highest safety, reliability, and performance in demanding offshore applications with extreme pressures and temperatures.

Sizes of Swivel Ring Flange

Swivel Ring Flanges are available in various sizes to accommodate pipe diameters and pressure ratings. Sizes range from 1/2″ to 60″ in diameter, with flanges designed to mate with ASME B16.47 Series A and B pipes. The most common sizes include:

• Class 150: 1/2″ to 24″

• Class 300: 1/2″ to 24″

• Class 600: 1/2″ to 24″

• Class 900: 1/2″ to 24″

• Class 1500: 1/2″ to 24″

• Class 2500: 1/2″ to 12″

Larger sizes up to 60″ are available for specific applications, providing increased flexibility for piping system design.

Pressure-Temperature Ratings of Swivel Ring Flange

The pressure-temperature rating of a Swivel Ring Flange is a crucial factor to consider, as it determines the maximum allowable pressure and temperature for the flange. Pressure-temperature ratings for Swivel Ring Flanges are based on ASME/ANSI B16.5 and MSS-SP 44 standards, with classifications ranging from Class 150 to Class 2500. These ratings ensure that the flange can withstand the stresses and strains of high-pressure and high-temperature applications.

Dimensions of Swivel Flanges

The dimensions of Swivel Ring Flanges vary depending on the size and pressure rating. The dimensional specifications for Swivel Ring Flanges include the following:

• Flange Diameter: The outside diameter of the flange is used to determine the appropriate size of the connecting pipe and equipment.
• Bolt Circle Diameter: The circle’s diameter is formed by the bolt holes’ centers, which is critical for proper alignment and bolting.
• Hub Diameter: The diameter of the raised portion of the flange, which fits into the pipe bore.
• Thickness: The flange’s thickness ensures adequate strength and durability.
• The number of Bolt Holes: The number of bolt holes required for connecting the flange to the mating equipment.
• Bolt Hole Diameter: The diameter of the bolt holes, which must be compatible with the size of the bolts used.

Dimensions of Swivel Ring Flanges Class 300

Unit : mm

Nomi­nal Dia. Of Flange (INCH)	Sectional Dimensions of flange
	Outside Dia. Of Flange O (mm)	Inside Dia. Of Flange ID (mm)	Dia of Bolt Clircle PCD (mm)	Dia.of Raised Face RF OD (mm)	P (mm)	TH1 (mm)	TH2 (mm)	Y (mm)	Dia.of Hub		F (mm)	E (mm)	Hole Dia H (mm)	Num­ber of Bolt Holes N	RING NO	R1 (mm)
									A (mm)	HUB OD (mm)
1/2	95.3	To be Customer.	66.5	50.8	34.14	8.9	8.9	56.4	21.3	38.1	7.14	5.56	15.9	4	R11	0.8
3/4	117.3	To be Customer.	82.6	63.5	42.88	9.9	9.9	62	26.7	47.8	8.74	6.35	19.1	4	R13	0.8
1	124	To be Customer.	88.9	69.9	50.8	11.2	11.2	66.8	33.4	53.8	8.74	6.35	19.1	4	R16	0.8
1 1/4	133.4	To be Customer.	98.6	79.2	60.33	12.2	12.2	69.9	42.2	63.5	8.74	6.35	19.1	4	R18	0.8
1 1/2	155.4	To be Customer.	114.3	90.4	68.28	13.5	13.5	73.2	48.3	69.9	8.74	6.35	22.2	4	R20	0.8
2	165.1	To be Customer.	127	108	82.55	14.5	14.5	76.3	60.3	84.1	11.91	7.92	19.1	8	R23	0.8
2 1/2	190.5	To be Customer.	149.4	127	101.6	16.8	16.8	82.6	73	100.1	11.91	7.92	22.2	8	R26	0.8
3	209.6	To be Customer.	168.1	146.1	123.83	18.8	18.8	85.6	88.9	117.3	11.91	7.92	22.2	8	R31	0.8
3 1/2	228.6	To be Customer.	184.2	158.8	131.78	19.8	19.8	87.4	101.6	133.4	11.91	7.92	22.2	8	R34	0.8
4	254	To be Customer.	200.2	174.8	149.23	21.1	21.1	92.3	114.3	146.1	11.91	7.92	22.2	8	R37	0.8
5	279.4	To be Customer.	235	209.6	180.98	23.4	23.4	105	141.3	177.8	11.91	7.92	22.2	8	R41	0.8
6	317.5	To be Customer.	269.7	241.3	211.12	24.6	24.6	105	168.3	206.2	11.91	7.92	22.2	12	R45	0.8
8	381	To be Customer.	330.2	301.8	269.88	28.7	29.2	117.7	219.1	273.8	11.91	7.92	25.4	12	R49	0.8
10	444.5	To be Customer.	387.4	355.6	323.85	32.5	32.5	123.7	273.1	327.7	11.91	7.92	28.6	16	R53	0.8
12	520.7	To be Customer.	450.9	412.8	381	36.3	35.6	136.4	323.9	384.8	11.91	7.92	31.8	16	R57	0.8
14	584.2	To be Customer.	514.4	457.2	419.1	39.9	38.6	149.1	355.6	422.9	11.91	7.92	31.8	20	R61	0.8
16	647.7	To be Customer.	571.5	508	469.9	43.7	41.7	152.5	406.4	473.7	11.91	7.92	34.9	20	R65	0.8
18	711.2	To be Customer.	628.7	574.5	533.4	47.5	44.7	165.2	457.2	537.2	11.91	7.92	34.9	24	R69	0.8
20	774.7	To be Customer.	685.8	635	584.2	51.1	47.8	170.1	508	588	13.49	9.53	34.9	24	R73	1.5
22	838.2	To be Customer.	743	685.8	635	54.9	50.8	174.7	558.8	638.8	15.09	11.13	41.3	24	R81	1.5
24	914.4	To be Customer.	812.8	749.3	692.15	58.7	54.1	177.7	609.6	696	16.66	11.13	41.3	24	R77	1.5
26	971.6	To be Customer.	876.3	809.8	749.3	58.7	54.5	195.3	660.4	714.4	19.84	12.7	44.5	28	R93	1.5
28	1035.1	To be Customer.	939.8	860.6	800.1	58.8	55	208	711.2	765.2	19.84	12.7	44.5	28	R94	1.5
30	1092.2	To be Customer.	997	917.4	857.25	58.9	55.5	220.7	762	8仃.4	19.84	12.7	47.6	28	R95	1.5
32	1149.4	To be Customer.	1054.1	984.3	914.4	59	56	235	812.8	871.7	23.01	14.27	50.8	28	R96	1.5
34	1206.5	To be Customer.	1104.9	1035.1	965.2	59.1	56	244.7	863.6	925.9	23.01	14.27	50.8	28	R97	1.5
36	1270	To be Customer.	1168.4	1092.2	1022.35	59.2	59	254.1	914.4	980.2	23.01	14.27	54	32	R98	1.5
38	1327.2	To be Customer.	1219.2	1098.6	1028.7	59.3	59.2	250.7	965.2	1034.4	19.84	12.7	54	32		1.5
40	1384.3	To be Customer.	1276.4	1172.4	1066.8	59.4	59.3	261.6	1016	1088.9	19.84	12.7	54	36		1.5
42	1447.8	To be Customer.	1339.9	1227.8	1117.6	59.5	62.2	273.6	1066.8	1143.1	19.84	12.7	54	36		1.5
44	1505	To be Customer.	1397	1285.2	1193.8	59.6	65	283.7	1117.6	1197.4	19.84	12.7	54	36		1.5
46	1562.1	To be Customer.	1454.2	1340.1	1231.9	59.7	66.3	293.6	1168.4	1251.6	19.84	12.7	54	40		1.5
48	1651	To be Customer.	1543.1	1395.6	1282.7	59.8	73.4	305.8	1219.2	1305.9	19.84	12.7	54	40		1.5

Dimensions of Swivel Ring Flanges Class 600

Unit : mm

Nominal Dia. Of Flange		Sectional Dimensions of flange
	Outside Dia. Of Flange O	Dia of Bolt Clircle PCD	Dia.of Raised Face RF OD	P	TH1	TH2	Y	Dia.of Hub		Radius R	F	E	Hole Dia H	Number of Bolt Holes N	RING NO	R1
								A	HUB OD
8	419.1	349.3	301.8	269.88	27.6	34.5	134.9	219.1	241.3	3	11.91	7.92	31.8	12	49	0.8
10	508	431.8	355.6	323.85	33.2	41	147.6	273.1	301.6	6	11.91	7.92	34.9	16	53	0.8
12	558.8	489	412.8	381	36.3	44.2	153.9	323.9	358.8	6	11.91	7.92	34.9	20	57	0.8
14	603.3	527.1	457.2	419.1	38.8	45.9	163.6	355.6	396.9	6	11.91	7.92	38.1	20	61	0.8
16	685.8	603.3	508	469.9	42.2	52.6	185.7	406.4	451.3	6	11.91	7.92	41.3	20	65	0.8
18	743	654.1	574.5	533.4	47.8	52.9	190.5	457.2	515.1	6	11.91	7.92	44.5	20	69	0.8
20	812.8	723.9	635	584.2	51.4	59.6	218.9	508	563.4	6	13.49	9.53	44.5	24	73	1.5
22	870	777.7	685.8	635	54.7	63	238.3	558.8	615.6	6	15.09	11.13	47.6	24	81	1.5
24	939.8	838.2	749.3	692.15	59.2	65.3	246.1	609.6	675.4	6	16.66	11.13	50.8	24	77	1.5
26	1016	914.4	809.8	749.3	69.1	70.7	273.1	660.4	731.4	13	19.84	12.7	50.8	28	93	1.5
28	1073.2	965.2	860.6	800.1	70.3	72.1	282.4	711.2	787.5	13	19.84	12.7	54	28	94	1.5
30	1130.3	1022.4	917.4	857.25	74.8	76.1	292.1	762	838.1	13	19.84	12.7	54	28	95	1.5
32	1193.8	1079.5	984.3	914.4	60.3	82.2	309.6	812.8	889.6	13	23.01	14.27	60.3	28	96	1.5
34	1244.6	1130.3	1035.1	965.2	84.1	83.2	325.4	863.6	938.8	13	23.01	14.27	60.3	28	97	1.5
36	1314.5	1193.8	1092.2	1022.35	89.9	89.2	335	914.4	987.8	13	23.01	14.27	66.7	28	98	1.5

Dimensions of Swivel Ring Flanges Class 900

Unit : mm

Nominal Dia. Of Flange	Outside Dia. Of Flange O	Sectional Dimensions of flange
		Dia of Bolt Clircle PCD	Dia.of Raised Face RF OD	P	TH1	TH2	Y	Dia.of Hub		Radius R	F	E	Hole Dia H	Number of Bolt Holes N	RING NO	R1
								A	HUB OD
8	470	394	305	269.88	35.6	47	152	219.1	257.5	6	11.91	7.92	38.1	12	49	0.8
10	545	470	401	323.85	46.6	49.7	184	273.1	325.7	6	11.91	7.92	38.1	16	53	0.8
12	610	533	452	381	53.1	57.4	192	323.9	373.9	6	11.91	7.92	38.1	20	57	0.8
14	640	559	486	419.1	59.1	60.7	217	355.6	404.0	6	16.66	11.13	41.3	20	62	1.5
16	705	616	533	469.9	69.1	67.9	236	406.4	447.0	6	16.66	11.13	44.5	20	66	1.5
18	785	686	603	533.4	72.2	73.1	268	457.2	511.9	6	19.84	12.7	50.8	20	70	1.5
20	855	749	664	584.2	77.6	77.1	286	508	569.5	6	19.84	12.7	54	20	74	1.5
24	1040	902	803	692.15	88.7	88.5	353	609.6	701.5	6	26.97	15.88	66.7	20	78	2.3
26	1085	952	848	749.3	99.1	97.6	357	660.4	734.6	13	30.18	17.48	73	20	100	2.3
28	1170	1022	911	800.1	105	103.3	376	711.2	794.2	13	33.32	17.48	79.4	20	101	2.3
30	1230	1086	975	857.25	110	107	399	762	853.9	13	33.32	17.48	79.4	20	102	2.3
32	1315	1156	1038	914.4	115.1	112.5	418	812.8	913.6	13	33.32	17.48	85.7	20	103	2.3
34	1395	1226	1102	965.2	121.4	118.3	459	863.6	972.8	13	36.53	20.62	92.1	20	104	2.3
36	1460	1289	1165	1022.35	126.1	122	459	914.4	1032.5	13	36.53	20.62	92.1	20	105	2.3

Dimensions of Swivel Ring Flanges Class 1500

Unit : mm

Nominal Dia. Of Flange	Outside Dia. Of Flange O	Sectional Dimensions of flange
		Dia of Bolt Clircle PCD	Dia.of Raised Face RF OD	P	TH1	TH2	Y	Dia.of Hub		Radius R	F	E	Hole Dia H	Number of Bolt Holes N	RING NO	R1
								A	HUB OD
8	483	394	308	269.88	60.5	66.6	197	219.1	243.8	6	16.66	11.13	44.5	12	50	1.5
10	585	483	373	323.85	71.2	78.3	233	273.1	303.6	6	16.66	11.13	50.8	12	54	1.5
12	675	572	486	381	82.1	82.1	282	323.9	386.0	6	23.01	14.27	54	16	58	1.5
14	750	635	543	419.1	89.6	88.3	311	355.6	438.9	6	26.97	15.88	60.3	16	63	2.3
16	825	705	606	469.9	99.8	96.7	344	406.4	496.1	6	30.18	17.48	66.7	16	67	2.3
18	915	775	670	533.4	110.4	107.3	373	457.2	545.9	6	30.18	17.48	73	16	71	2.3
20	985	832	721	584.2	121.2	117.1	402	508	587.7	6	33.32	17.48	79.4	16	75	2.3
24	1170	991	867	692.15	140.1	131.6	483	609.6	723.0	6	36.53	20.62	92.1	16	79	2.3

Manufacturing Process of Swivel Flanges

Swivel Flanges can be produced by forging, casting. We mainly produce flanges by forging, cutting and rolling processes. We will take you through the step-by-step process of manufacturing swivel flanges, from the materials used to the final product.

The manufacturing process of swivel ring flanges involves several stages, including:
Step 1: Designing and Engineering
The process starts with designing and engineering the swivel ring flange according to the required specifications, such as size, pressure rating, and material grade. Computer-aided design (CAD) software is often used to create detailed blueprints for the flange.
Step 2: Material Preparation
Once the design is finalized, the appropriate material is selected and cut to size using various cutting methods, such as sawing, shearing, or plasma.
Step 3: Forging
The raw material is then heated to a specific temperature and forged into the desired shape using a hydraulic press or hammer. Forging ensures the material’s mechanical properties are improved, resulting in a more robust and durable flange.
Step 4: Heat Treatment
Heat treatment, such as normalizing, quenching, and tempering, is performed to enhance the mechanical properties of the flange, making it more resistant to wear, corrosion, and high temperatures.
Step 5: Machining
After forging, the flange undergoes machining operations, such as turning, milling, drilling, and tapping. These processes ensure precise dimensions and smooth surfaces for proper sealing and alignment.
Step 6: Surface Treatment
Surface treatments, such as painting, galvanizing, or coating with anti-corrosive materials, are applied to protect the flange from corrosion and environmental damage.
Step 7: Quality Control and Inspection

Quality control measures are implemented throughout the manufacturing process to ensure the final product meets the required specifications. Inspections include visual checks, dimensional verification, and non-destructive testing methods, such as ultrasonic or radiographic testing.

Step 8: Coating
Once the inspection process is complete, the flange is coated to protect it from corrosion and other environmental factors. We offer a variety of coating options, including epoxy, zinc, and galvanized coatings.

Step 9: Assembly
Finally, the swivel ring flange is assembled by attaching the swivel outer ring to the inner hub. This assembly ensures proper alignment and ease of installation.
Step 10: Packaging and Delivery
Finally, the flange is packaged and prepared for delivery to the customer. We take great care in packaging our products to ensure that they arrive at their destination in pristine condition.
At Jihua, we take great pride in our manufacturing process of swivel flanges. We are committed to producing high-quality flanges that meet the needs of our customers. Contact us today to learn more about our products and services.

Marking of Swivel Flanges

The marking of swivel flanges is essential to their manufacture and use. The marking aims to provide information about the flange’s material, size, pressure rating, and other relevant details.
Swivel Flanges are typically marked by industry standards, such as ASME B16.5 or EN 1092-1. These standards specify the required information that must be included on the flange, as well as the format and location of the markings.
The required information typically includes the following:

• Flange size
• Pressure rating
• Material specification
• Tag number
• Manufacturer’s name or trademark
• Heat number or lot number
• Date of manufacture

The standard also specifies the location of the marking on the flange. Typically, the marking is placed on the raised face of the flange near the bolt holes. In some cases, the marking may be located on the flange hub or the plate itself.

Packing of Swivel Flanges

How to package swivel flanges? To pack the swivel flange, follow these steps:
When it comes to packaging swivel 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 swivel flanges.
Step 1: Clean and Inspect the Flanges
Before packaging the swivel 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 swivel 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 swivel 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 swivel 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 swivel flanges properly, and label the package accurately to avoid any mishaps during transportation.

Inspection and Measurement of Swivel Flanges

There are several factors that need to be considered when inspecting and measuring swivel flanges, including:

Material
The first thing to inspect in a swivel 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 swivel 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 swivel 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.

Maintenance Swivel Flanges

Proper maintenance of swivel ring flanges is essential to ensure their continued performance and longevity. Here are some tips for maintaining these crucial components:

• Regular inspection: Conduct routine visual inspections to identify any signs of wear, corrosion, or damage. Pay close attention to the sealing surfaces and bolting components, as these areas are critical for proper sealing and alignment.
• Cleaning and lubrication: Keep the flange surfaces clean and free from debris, which can lead to improper sealing and potential leaks. Additionally, apply lubrication to the rotating components, such as the outer ring and bolt threads, to reduce friction and facilitate smooth operation.
• Proper installation: Ensure that the swivel ring flange is installed correctly, with the outer ring rotating freely and the inner hub properly aligned with the mating pipe. Follow the manufacturer’s guidelines and industry standards for proper installation procedures.
• Bolt tensioning: Bolts should be tightened evenly and in a cross pattern to maintain consistent pressure across the flange’s sealing surface. Periodically check the bolt tension, as improper tension can lead to leaks or damage to the flange.
• Gasket selection and maintenance: Choose the appropriate gasket material for the specific application and service conditions, such as temperature, pressure, and the type of fluid being transported. Replace gaskets regularly to ensure a leak-proof seal.

By following these maintenance tips, you can help ensure the optimal performance and longevity of your swivel ring flanges.

Application of Swivel Flanges

Swivel Flanges are commonly used in various applications that require pressure testing, leak testing, or hydrostatic testing. Some of the applications of swivel flanges are:

Swivel ring flanges are commonly used in various industries, such as oil and gas, petrochemical, power generation, and shipbuilding. Some typical applications include:

• Subsea pipelines and risers;

• Offshore platforms and FPSO (Floating Production, Storage, and Offloading) systems;

• High-pressure and high-temperature piping systems;

• Process plants and refineries.

How to purchase the correct swivel flanges?

Are you in the market for swivel 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 swivel flanges to ensure that you make the right decision.
Determine the Material Needed
The first step to purchasing the correct swivel 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 Face Type
Flange face types refer to the surface finish of a flange, and there are many different types of flange face finishes, including flat face (FF), raised face (RF), ring-type joint (SO), tongue and groove (T&G), male and female face (M&F). Each type of flange face has its unique characteristics and is suitable for different applications.

• Flat face (FF): This type of flange face has a flat, smooth surface that is perpendicular to the axis of the pipe. It is typically used for low-pressure applications and when the sealing is achieved by a gasket.
• Raised face (RF): This type of flange face has a raised ring on the surface that surrounds the bolt holes. The ring provides a surface for the gasket to rest on, which helps to create a better seal. It is commonly used in applications with moderate pressure.
• Ring joint face (RTJ): This type of flange face has a specially designed groove to accommodate a metallic ring gasket. The groove is cut into the surface of the flange, and the gasket sits in the groove to create a tight seal. This type of flange face is typically used in high-pressure applications.
• Tongue and groove face (T&G): This type of flange face has a raised tongue on one flange and a matching groove on the other flange. The tongue fits into the groove, creating a tight seal without the need for a gasket. This type of flange face is often used in applications where high pressure and temperature are involved.
• Male and Female Face (M&F): This type of flange face is similar to the tongue and groove face. However, it has a male and female end which creates a face to face contact between two flanges. This type of flange is mainly used for low pressure and low temperature applications.

To identify a specific flange face type, you need to provide me with more information, such as the flange’s application, dimensions, and material.
Determine the Swivel Flange Size and Pressure Class
Once you have identified the material and swivel flange type, the next step is to determine the size and pressure class of the swivel flange. swivel 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 swivel 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 swivel 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 swivel 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 order swivel ring flanges?

For orders or inquiries, please provide the following information:

• Pipe diameter and wall thickness;

• Material and grade;

• Design standard or drawing;

• Specification of the matching flange.

Customization Options for Swivel Ring Flanges

Swivel ring flanges can be customized to meet specific application requirements, including:

• Size and pressure rating: Swivel ring flanges can be manufactured in various sizes and pressure ratings to accommodate the specific requirements of your piping system.

• Material selection: Choose from a range of materials, such as carbon steel, stainless steel, or alloy steel, to suit the specific service conditions of your application.

• Coating and surface treatments: Customize the flange’s surface treatment to improve corrosion resistance, enhance appearance, or provide additional protection against harsh environments.

• Special features: Request additional features, such as raised or recessed sealing surfaces, customized bolt-hole patterns, or unique hub designs, to suit the needs of your application better.

Working with a reputable manufacturer can help you develop custom swivel ring flanges that meet your exact specifications and performance requirements.

How to select swivel flanges manufacturer?

Selecting the right manufacturer for swivel 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 swivel flanges manufacturer.
Quality of Products
The first factor to consider when selecting a swivel 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 swivel 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 swivel 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 Swivel Flange Supplier?

Jihua is a well-established and reputable manufacturer and supplier of swivel 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 swivel flange supplier:

• High-quality products: Jihua is committed to providing high-quality swivel 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 swivel flanges at an affordable price.
• Wide range of products: Jihua offers a wide range of swivel 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 swivel flanges that can meet your needs and exceed your expectations.

Export Country For Swivel 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