Ring Joint Flange

Teshi Fittings, a premier manufacturer of pipe fittings, offers high-quality Ring Joint Flanges designed for various industries including Petroleum, Chemical, Hydraulic, Food, and more. Crafted with meticulous precision and adherence to international quality standards, our Ring Joint Flanges provide secure and leak-proof solutions for high-pressure piping systems. With a commitment to excellence and customer satisfaction, Teshi Fittings delivers superior performance and durability in every flange, offering tailored solutions to meet specific project requirements. Experience the difference with Teshi Fittings’ Ring Joint Flanges and trust in our expertise for all your piping needs.

Standard Specification of Ring Joint Flange

Standards / DimensionsANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, BS, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605
Size1/2″ (15 NB) to 48″ (1200NB)
Flange Face Types / Connection TypeFlat Face Flange (FF), Raised Face Flange (RF), Ring Joint Flange (RTJ), Lap Joint Flange, Male and Female Flange (M&F), Large and Small Tongue-and-Groove Flange (T&G)
DimensionsANSI B16.5, ANSI B16.47 Series A & B, ASA, API-605, MSS SP44, AWWA, Custom Drawings
BSBS4504 , BS4504, BS1560, BS10
Class / Pressure Rating150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Material & Grades of Ring Joint Flange

Stainless SteelASTM/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 & Super Duplex SteelS31803 / S32205 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 S32750 / S32760 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Carbon SteelASTM/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)
Low Temperature Carbon SteelASTM A350, LF2, LF3
Alloy SteelASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Nickel AlloyNickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II)

Dimension of Ring Joint Flange

RING TYPE JOINT FLANGE CLASS 150 DIMENSIONS

Size in InchSize in mmOuter Dia.Flange ThicknessHub ODWeld Neck ODWelding Neck LengthRTJ RF DiaRTJ RF HeightPCDRTJ Pitch diaRTJ DepthRTJ WidthBore
ABCDEFGHIJKL
1/215909.63021.346N/AN/A60.3N/AN/AN/AWelding Neck bore is derived from the pipe schedule
3/42010011.23826.751N/AN/A69.9N/AN/AN/A
12511012.74933.45463.56.3579.447.636.358.74
1 1/43211514.35942.256736.3588.957.156.358.74
1 1/24012515.96548.36082.56.3598.465.076.358.74
25015017.57860.3621026.35120.782.556.358.74
2 1/26518020.79073681216.35139.7101.66.358.74
38019022.310888.9681336.35152.4114.36.358.74
3 1/29021522.3122101.6701546.35177.8131.786.358.74
410023022.3135114.3751716.35190.5149.236.358.74
512525522.3164141.3871946.35215.9171.456.358.74
615028023.9192168.3872196.35241.3193.686.358.74
820034527246219.11002736.35298.5247.656.358.74
1025040528.63052731003306.35362304.86.358.74
1230048530.2365323.81134066.35431.83816.358.74
1435053533.4400355.61254256.35476.3396.886.358.74
1640059535457406.41254836.35539.8454.036.358.74
1845063538.1505457.21385466.35577.9517.536.358.74
2050070041.35595081435976.35635558.86.358.74
2460081546.16636101517116.35749.3673.16.358.74

RING TYPE JOINT FLANGE CLASS 300 DIMENSIONS

Size in InchSize in mmOuter Dia.Flange ThicknessHub ODWeld Neck ODWelding Neck LengthRTJ RF DiaRTJ RF HeightPCDRTJ Pitch diaRTJ DepthRTJ WidthBore
ABCDEFGHIJKL
1/2159512.73821.351515.5466.734.145.547.14Welding Neck bore is derived from the pipe schedule
3/42011514.34826.75663.56.3582.642.886.358.74
12512515.95433.460706.3588.950.86.358.74
1 1/43213517.56442.26479.56.3598.460.336.358.74
1 1/24015519.17048.36790.56.35114.368.276.358.74
25016520.78460.3681087.9212782.557.9211.91
2 1/26519023.910073751277.92149.2101.67.9211.91
3802102711788.9781467.92168.3123.837.9211.91
3 1/29023028.6133101.6791597.92184.2131.787.9211.91
410025530.2146114.3841757.92200149.237.9211.91
512528033.4178141.3972107.92235180.987.9211.91
615032035206168.3972417.92269.9211.127.9211.91
820038039.7260219.11103027.92330.2269.887.9211.91
1025044546.13212731163567.92387.4323.857.9211.91
1230052049.3375323.81294137.92450.83817.9211.91
1435058552.4425355.61414577.92514.4419.17.9211.91
1640065055.6483406.41445087.92571.5469.97.9211.91
1845071058.85334571575757.92628.6533.47.9211.91
20500775625875081606359.53685.8584.29.5313.49
2460091568.370261016774911.13812.8692.1511.1316.66

RING TYPE JOINT FLANGE CLASS 400 DIMENSIONS

Size in InchSize in mmOuter Dia.Flange ThicknessHub ODWeld Neck ODWelding Neck LengthRTJ RF DiaRTJ RF HeightPCDRTJ Pitch diaRTJ DepthRTJ WidthBore
ABCDEFGHIJKL
1/2159514.33821.352515.5466.734.145.547.14Welding Neck bore is derived from the pipe schedule
3/42011515.94826.75763.56.3582.642.886.358.74
12512517.55433.462706.3588.950.86.358.74
1 1/43213520.76442.26779.56.3598.460.336.358.74
1 1/24015522.37048.37090.56.35114.368.276.358.74
25016525.48460.3731087.9212782.557.9211.9
2 1/26519028.610073791277.92149.2101.67.9211.9
38021031.811788.9831467.92168.3123.837.9211.9
3 1/29023035133101.6861597.92184.2131.787.9211.9
410025535146114.3891757.92200149.237.9211.91
512528038.1178141.31022107.92235180.987.9211.91
615032041.3206168.31032417.92269.9211.127.9211.91
820038047.7260219.11173027.92330269.887.9211.91
10250445543212731243567.92387.4323.857.9211.91
1230052057.2375323.81374137.92450.83817.9211.91
1435058560.4425355.61494577.92514.4419.17.9211.91
1640065063.5483406.41525087.92571.5469.97.9211.91
1845071066.75334571655757.92628.6533.47.9211.91
2050077569.95875081686359.53685.8584.29.5313.49
2460091576.270261017574911.13812.8692.1511.1316.66

RING TYPE JOINT FLANGE CLASS 600 DIMENSIONS

Size in InchSize in mmOuter Dia.Flange ThicknessHub ODWeld Neck ODWelding Neck LengthRTJ RF DiaRTJ RF HeightPCDRTJ Pitch diaRTJ DepthRTJ WidthBore
ABCDEFGHIJKL
1/2159514.33821.352515.5466.734.145.547.14Welding Neck bore is derived from the pipe schedule
3/42011515.94826.75763.56.3582.642.886.358.74
12512517.55433.462706.3588.950.86.358.74
1 1/43213520.76442.26779.56.3598.460.336.358.74
1 1/24015522.37048.37090.56.35114.368.276.358.74
25016525.48460.3731087.9212782.557.9211.91
2 1/26519028.610073791277.92149.2101.67.9211.91
38021031.811788.9831467.92168.3123.837.9211.91
3 1/29023035133101.6861597.92184.2131.787.9211.91
410027538.1152114.31021757.92215.9149.237.9211.91
512533044.5189141.31142107.92266.7180.987.9211.91
615035547.7222168.31172417.92292.1211.127.9211.91
820042055.6273219.11333027.92349.2269.887.9211.91
1025051063.53432731523567.92431.8323.857.9211.91
1230056066.7400323.81564137.924893817.9211.91
1435060569.9432355.61654577.92527419.17.9211.91
1640068576.2495406.41785087.92603.2469.97.9211.91
1845074582.65464571845757.92654533.47.9211.91
2050081588.96105081906359.53723.9584.29.5313.49
24600940101.671861020374911.13838.2692.1511.1316.66

RING TYPE JOINT FLANGE CLASS 900 DIMENSIONS

Size in InchSize in mmOuter Dia.Flange ThicknessHub ODWeld Neck ODWelding Neck LengthRTJ RF DiaRTJ RF HeightPCDRTJ Pitch diaRTJ DepthRTJ WidthBore
ABCDEFGHIJKL
1/21512022.33821.36060.56.3582.639.676.358.74Welding Neck bore is derived from the pipe schedule
3/42013025.44426.77066.56.3588.944.456.358.74
12515028.65233.47371.56.35101.650.86.358.74
1 1/43216028.66442.273816.35111.160.336.358.74
1 1/24018031.87048.383926.35123.868.276.358.74
25021538.110560.31021247.92165.195.257.9211.91
2 1/26524541.3124731051377.92190.5107.957.9211.91
38024038.112788.91021567.92190.5123.837.9211.91
410029044.5159114.31141817.92235149.237.9211.91
512535050.8190141.31272167.92279.4180.987.9211.91
615038055.6235168.31402417.92317.5211.127.9211.91
820047063.5298219.11623087.92393.7269.887.9211.91
1025054569.93682731843627.92469.9323.857.9211.91
1230061079.4419323.82004197.92533.43817.9211.91
1435064085.8451355.621346711.13558.8419.111.1316.66
1640070588.9508406.421652411.13616469.911.1316.66
18450785101.656545722959412.7685.8533.412.719.84
2050085510862250824864812.7749.3584.212.719.84
246001040139.774961029277215.88901.7692.1515.8826.97

RING TYPE JOINT FLANGE CLASS 1500 DIMENSIONS

Size in InchSize in mmOuter Dia.Flange ThicknessHub ODWeld Neck ODWelding Neck LengthRTJ RF DiaRTJ RF HeightPCDRTJ Pitch diaRTJ DepthRTJ WidthBore
ABCDEFGHIJKL
1/21512022.33821.36060.56.3582.639.676.358.74Welding Neck bore is derived from the pipe schedule
3/42013025.44426.77066.56.3588.944.456.358.74
12515028.65233.47371.56.35101.650.86.358.74
1 1/43216028.66442.273816.35111.160.336.358.74
1 1/24018031.87048.383926.35123.868.276.358.74
25021538.110560.31021247.92165.195.257.9211.91
2 1/26524541.3124731051377.92190.5107.957.9211.91
38026547.713388.91171687.92203.2136.537.9211.91
410031054162114.31241947.92241.3161.937.9211.91
512537573.1197141.31562297.92292.1193.687.9211.91
615039582.6229168.31712489.53317.5211.149.5313.49
820048592.1292219.121331811.13393.7269.8811.1316.66
1025058510836827325437111.13482.6323.8511.1316.66
12300675123.9451323.828343814.27571.538114.2723.01
14350750133.4495355.629848915.88635419.115.8826.97
16400825146.1552406.431154617.48704.8469.917.4830.18
1845091516259745732761317.48774.7533.417.4830.18
20500985177.864150835667317.48831.8584.217.4833.32
246001170203.276261040679420.62990.6692.1520.6236.53

RING TYPE JOINT FLANGE CLASS 2500 DIMENSIONS

Size in InchSize in mmOuter Dia.Flange ThicknessHub ODWeld Neck ODWelding Neck LengthRTJ RF DiaRTJ RF HeightPCDRTJ Pitch diaRTJ DepthRTJ WidthBore
ABCDEFGHIJKL
1/21513530.24321.373656.3588.942.886.358.74Welding Neck bore is derived from the pipe schedule
3/42014031.85126.779736.3595.250.86.358.74
125160355733.48982.56.3510860.336.358.74
1 1/43218538.17342.2951027.92130.272.237.9211.91
1 1/24020544.57948.31111147.9214682.557.9211.91
25023550.99560.31271337.92171.4101.67.9211.91
2 1/26526557.2114731431499.53196.8111.139.5213.49
38030566.713388.91681689.53228.61279.5213.49
410035576.2165114.319020311.13273157.1811.1316.66
512542092.1203141.322924112.7323.8190.512.719.84
6150485108235168.327327912.7368.3228.612.719.84
8200550127305219.131834014.27438.2279.414.2723.01
10250675165.137527341942517.48539.8342.917.4830.18
12300760184.2441323.846449517.48619.1406.417.4833.32

Manufacturing process and features of Ring Joint Flange

Manufacturing Process:

  • Material Selection : Choose appropriate materials such as carbon steel, stainless steel, or alloy steel based on the application’s pressure, temperature, and corrosion requirements.
  • Cutting : Cut the raw material into the required shapes and sizes using cutting machines or torches.
  • Forging : Heat the material and forge it into the flange shape using high-pressure forging presses. This step ensures the flange’s strength and durability.
  • Machining : Machine the flange to precise tolerances using CNC machines. This includes machining the gasket groove, flange faces, and bolt holes.
  • Groove Cutting : Create a ring joint groove on the flange face. This groove is precision-machined to accommodate a metal ring gasket, ensuring a secure and leak-proof seal.
  • Drilling Bolt Holes : Drill bolt holes according to standards such as ASME B16.5 or customer specifications. The bolt holes must be precisely aligned for proper assembly.
  • Surface Finishing : Perform surface treatments such as grinding, polishing, or coating to enhance corrosion resistance and improve aesthetics.
  • Inspection and Testing : Conduct thorough inspection and testing, including dimensional checks, non-destructive testing (NDT), and pressure testing to ensure quality and reliability.
  • Marking and Packaging : Mark the ring joint flange with relevant information such as material grade, size, pressure rating, and standards compliance. Carefully package the flanges to protect them during transportation.

Features of Ring Joint Flange :

  • Leak-Proof Seal : The precision-machined ring joint groove accommodates a metal ring gasket, providing a strong, leak-proof seal. This is especially important in high-pressure and high-temperature applications.
  • High-Pressure and High-Temperature Resistance : Suitable for applications that involve high pressures and temperatures, offering robust performance and durability.
  • Corrosion Resistance : Manufactured from materials with excellent corrosion resistance properties, ensuring long-lasting performance in harsh environments.
  • Standards Compliance : Designed and manufactured in accordance with international standards (e.g., ASME B16.5, API 6A) to ensure quality, reliability, and compatibility with other flange components.
  • Ease of Installation : The ring joint design allows for easy alignment and secure installation, reducing the risk of leaks and ensuring a reliable connection.
  • Versatility : Available in a variety of sizes, materials, and pressure ratings, making them suitable for a wide range of industrial applications.
  • Durability : The forging and machining processes ensure that ring joint flanges are strong and durable, capable of withstanding demanding operating conditions.
  • Maintenance : Designed for ease of maintenance and inspection, with the ability to replace the metal ring gasket if necessary without removing the entire flange.

Application Of Ring Joint Flange

Oil and Gas IndustryUpstream: Used in drilling and wellhead equipment, as well as in high-pressure systems.
Midstream: Essential in pipeline systems for transporting oil and gas.
Downstream: Utilized in refineries and petrochemical plants for processing and distribution.
Chemical ProcessingEmployed in chemical plants where high-pressure and high-temperature reactions occur, ensuring a secure seal to prevent leaks of hazardous materials.
Power GenerationUsed in power plants, including nuclear, thermal, and hydroelectric facilities, for high-pressure steam and water pipelines.
Petrochemical IndustryCritical in the construction and maintenance of petrochemical plants, where they ensure the integrity of high-pressure processing units.
Marine and Offshore ApplicationsFound in offshore drilling rigs and platforms, as well as in shipbuilding, where they provide secure connections in high-pressure piping systems exposed to harsh marine environments.
Mining and Mineral ProcessingUtilized in high-pressure slurry and fluid transport systems within mining operations, ensuring leak-proof connections in abrasive and corrosive environments.
Aerospace and DefenseApplied in aerospace applications where high-pressure and high-temperature conditions are prevalent, such as in propulsion systems and hydraulic lines.
Pharmaceutical IndustryUsed in high-purity and high-pressure systems within pharmaceutical manufacturing, ensuring sterile and leak-proof connections.
Pulp and Paper IndustryEmployed in high-pressure steam and chemical transport systems within paper mills, ensuring efficient and leak-free operations.
Food and Beverage ProcessingUtilized in high-pressure and high-temperature systems for processing and transporting food and beverages, maintaining hygiene and preventing contamination.

Ring Joint Flange Available Types

Ring Joint Flange ManufacturerRing Joint Flange Exporter
Stainless Steel RTJ FlangeWN RTJ Flange
Carbon Steel Ring Joint FlangeANSI B16.47 Ring Joint Flange
Alloy Steel Ring Joint Flange StockholderClass 150 LBS Ring Joint Flange Stockiest
Nickel Alloy Ring Joint Flange SuppliersMSS SP44 Ring Joint Flange
Inconel Ring Joint Flange StockiestClass 300 LBS Ring Joint Flange
Alloy Steel Ring Joint Flange ExporterClass 600 LBS Ring Joint Flange
Duplex Steel Ring Joint Flange StockistsDIN / EN Ring Joint Flange Manufacturers
Titanium Alloy Ring Joint FlangeASME / ANSI B16.5 RTJ Flange
Super Duplex Steel Ring Joint FlangeANSI / ASME Ring Joint Flange
Copper Nickel Ring Joint FlangeHigh Quality Ring Joint Flange

Others Products


Frequently Asked Questions

A ring joint flange is a type of flange designed to provide a high-pressure and leak-proof seal using a ring-shaped gasket that fits into a groove on the flange face. This flange is commonly used in high-pressure and high-temperature applications where a reliable seal is crucial, such as in the oil and gas, petrochemical, and power generation industries.

Ring joint flanges are available in a range of sizes to accommodate various pipe diameters and pressure ratings. Standard sizes are available, and custom sizes can be manufactured to meet specific needs.

Ring joint flanges are installed by aligning the flanges with the pipe or equipment to be connected. The ring joint gasket is placed into the groove of one flange, and the two flanges are bolted together. Proper alignment and torqueing of the bolts are essential to ensure a secure, leak-proof seal. The gasket’s design ensures that it conforms to the flange’s grooves for a tight fit.

Yes, we offer custom manufacturing solutions for ring joint flanges to meet specific requirements. Please contact us with your detailed specifications, and we will work with you to produce flanges tailored to your needs.

The lead time for ring joint flanges depends on the complexity and volume of the order. After reviewing your specifications, we will provide an estimated lead time. We are committed to delivering all projects on schedule while maintaining the highest quality standards.

Yes, ring joint flanges can be used for both liquid and gas applications, provided they are made from appropriate materials and installed correctly to handle the specific conditions of the system, including pressure and temperature.

Ring joint flanges are typically made from materials like carbon steel, stainless steel, alloy steel, and other metals. The choice of material depends on the specific requirements of the application, including the type of fluid or gas, temperature, pressure, and environmental conditions.

Ring joint flanges are used in industries where high-pressure and high-temperature conditions are present, such as in the oil and gas industry, petrochemical processing, power generation, and chemical manufacturing. They are ideal for applications requiring a robust and reliable seal to prevent leaks.

Ring joint flanges are manufactured to comply with various industry standards, such as ASME B16.5, ASME B16.47, API 6A, and API 6B. These standards define the dimensions, tolerances, and material requirements to ensure compatibility and reliability in high-pressure and high-temperature piping systems.

Ring joint flanges offer several advantages, including:

  • High-pressure sealing: Provides a robust and leak-proof seal in high-pressure and high-temperature applications.
  • Durability: Made from strong materials to handle demanding conditions.
  • Reliability: Ensures a secure connection and prevents leakage.
  • Compliance with standards: Adheres to industry standards for quality and performance.

Regular inspection of ring joint flanges involves checking for leaks and ensuring that the flanges remain securely bolted. It is important to inspect the gasket and flange surfaces for any signs of damage, wear, or deformation that could affect the integrity of the seal.