Socket Weld Union

‘Teshi Fittings’ premier Socket Weld Unions, meticulously crafted for various industries including Petroleum, Chemical, Hydraulic, Food, and more. Engineered with precision and manufactured to meet stringent international quality standards, our Socket Weld Unions ensure dependable sealing and seamless integration within piping systems. Committed to excellence and exceeding customer expectations, Teshi Fittings guarantees superior performance and longevity in every fitting, offering tailored solutions to meet specific project requirements. Trust in Teshi Fittings’ expertise for all your piping needs and experience the unmatched quality of our Socket Weld Unions.

Standard Specification of Socket Weld Union

DimensionsASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799
Size1/2″NB TO 4″NB IN
TypeSocket Weld (S/W) & SCREWED (SCRD) – NPT, BSP, BSPT   
DINDIN2605, DIN2615, DIN2616, DIN2617, DIN28011
ENEN10253-1, EN10253-2
ScheduleSCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
FormSocket Weld Union, Socket Weld Pipe Union, Socket Weld Orifice Union, Forged Union, Socket Weld Union Fittings

Material & Grades of Socket Weld Union

Stainless Steel Socket Weld UnionASTM A182 F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F454L, ASTM A312/A403 TP304, TP304L, TP316, TP316L
Duplex & Super Duplex Steel Socket Weld UnionASTM A 182 – F 51, F53, F55 S 31803, S 32205, S 32550, S 32750, S 32760, S 32950.
Carbon Steel Socket Weld UnionASTM A105, A350 LF2, A106 Gr.B, A234 WPB
Low Temperature Carbon Steel Socket Weld UnionASTM/ASME A420 SA/420 WPL3, WPL6
Alloy Steel Socket Weld UnionASTM / ASME A182, ASTM / ASME A335 GR P 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91, ASTM / ASME A691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9CR, 91
Nickel Alloy Socket Weld UnionASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), 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), Copper Nickel (Cupro-Nickel 90/10 & 70/30).

Dimension of Socket Weld Union

ANSI/ASME B16.11 SOCKET WELD UNION DIMENSIONS

Nominal Diameter
Outside Diameter

Wall Thickness

Socket Bore

Water way Bore

Depth of Socket

Length Assem
Nominal
DminCmind1d2JminL
DNNPSSocketThreadedSocketThreadedSocket
Socket & Threaded
SocketSocket & Threaded
61/821.814.73.22.510.656.431041.4
81/421.819.03.33.114.109.451041.4
103/825.922.93.53.217.5513.511046.0
151/231.227.74.13.821.7017.071049.0
203/437.133.54.34.027.0521.391356.9
25145.541.45.04.633.8027.741362.0
3211/454.950.55.34.942.5535.361371.1
4011/261.557.25.65.148.6541.201376.5
50275.270.16.15.661.1052.121686.1
6521/291.785.37.77.173.8064.3116102.4
803109.2102.48.47.789.8077.2716109.0
CLASS 3000 Socket Weld Union
PIPE SIZE1/81/43/81/23/411-1/41-1/222-1/234
A1.3751.3751.6251.8132.2502.5623.0633.4384.0634.8755.6886.875
B1.6881.6881.8131.9382.2502.4382.8133.0003.3754.0314.3138.000
C0.8650.8651.0251.2351.4651.7952.1652.4252.9653.6154.3055.415
D0.4260.5600.6930.8591.0711.3351.6821.9222.4102.9103.5364.545
E0.8130.8130.9380.9381.1251.1881.4381.5001.6252.2502.3135.000
LBS0.400.380.520.731.191.662.663.425.369.1212.5817.50
CLASS 6000 Socket Weld Union
PIPE SIZE1/81/43/81/23/411-1/41-1/222-1/234
A1.3751.6251.8132.2502.5623.0633.4384.0634.8755.6886.875
B1.6881.8131.9382.2502.4382.8133.0003.3754.0314.3138.000
C0.8651.0251.2351.4651.7952.1652.4252.9653.6154.3055.415
D0.4260.5600.6930.8591.0711.3351.6821.9222.4102.9103.536
E0.8130.8130.9380.9381.1251.1881.4381.5001.6252.2505.750
LBS0.480.560.751.352.013.173.926.6010.1214.0040.891
CLASS 9000 Socket Weld Union
PIPE SIZE1/81/43/81/23/411-1/41-1/222-1/234
A1.7502.0002.2502.5633.0633.6884.3135.0005.7506.875
B2.5002.5632.9383.2503.7504.0004.6254.8135.5636.25
C1.0001.2501.5001.7502.2502.5003.0003.6254.2505.000
D0.4260.5600.6930.8591.0711.3351.6821.9222.4102.910
E1.7201.6881.9382.0002.3752.3753.0002.9383.1883.750
LBS0.891.0451.9553.295.347.9912.7318.3426.3637.07

Manufacturing process and features of Socket Weld Union

Socket weld pipe fittings are commonly used in piping systems where high-pressure and high-temperature conditions are expected. Here are the key aspects of their manufacturing process and features:

Manufacturing Process:

  • Material Selection: Socket weld unions are typically crafted from forged materials such as carbon steel, stainless steel, or alloy steel. These materials are chosen for their strength and durability in high-pressure environments.
  • Forging: The manufacturing begins with forging, where heated billets of selected materials are shaped using forging dies. This process ensures the unions have robust grain structure and mechanical properties required for high-pressure applications.
  • Machining: Post-forging, the unions undergo precise machining to meet dimensional specifications like ASME B16.11. This step ensures accurate dimensions and smooth surfaces, critical for reliable performance.
  • Heat Treatment: Depending on material requirements, unions may undergo heat treatments like normalization or tempering to enhance mechanical properties such as hardness and toughness.
  • Quality Control: Stringent quality control measures are employed throughout manufacturing. This includes dimensional checks, surface finish inspections, and material integrity tests to ensure adherence to standards and consistent quality.

Features of Socket Weld Union:

  • Socket Weld Connection: Unions facilitate pipe connections via insertion into a recessed area (socket) and subsequent fillet welding. This method ensures a secure, leak-proof joint.
  • High Pressure Capability: Designed for high-pressure applications, socket weld unions typically withstand Class 3000 or 6000 pressures, ensuring reliability under demanding conditions.
  • Compact Design: Featuring a space-efficient design compared to butt weld alternatives, unions are suitable for installations where space constraints are a concern.
  • Smooth Flow: Their smooth interior minimizes turbulence and pressure drops in fluid flow, beneficial for maintaining efficient operations in high-velocity systems.
  • Strength and Reliability: Thanks to forged construction and weld integrity, socket weld unions offer robust strength and reliability, crucial for industries like oil and gas, chemical processing, and power generation.
  • Easy Installation and Maintenance: Unions are straightforward to install and dismantle, streamlining maintenance procedures and minimizing downtime compared to fully welded alternatives.
  • Versatility: Available in various sizes, configurations (e.g., straight, reducing), and materials, socket weld unions accommodate diverse piping system needs across industries.

Socket weld unions play a pivotal role in industries requiring dependable connections under high pressures and temperatures. Their rigorous manufacturing process ensures they meet exacting standards, making them indispensable for critical applications demanding reliability and performance.

Application Of Socket Weld Union

Oil and Gas PipelineStainless Steel Forged Socket Weld Unions are essential for their durability and resistance to corrosion in pipeline systems.
Chemical IndustryThese unions are used where chemical resistance and leak-proof joints are critical for safety and operational efficiency.
PlumbingAlloy Steel Socket Weld Unions are employed in plumbing applications where strength and ease of installation are advantageous.
HeatingForged Socket Weld End Unions play a role in heating systems, ensuring secure connections under high temperatures and pressures.
Water Supply SystemsSocket Weld Forged Unions are utilized to maintain reliable joints in water distribution networks.
Power PlantsANSI B16.11 Forged Socket Weld Unions contribute to the efficiency and reliability of piping systems within power generation facilities.
Paper & Pulp IndustrySocket Weld Unions are used in this industry for their strength and resilience in handling various fluids and chemicals.
General Purpose ApplicationsForged Socket Weld Unions are versatile and find use in a wide range of general industrial applications where robust pipe connections are required.
Fabrication IndustryThese unions are integral in fabrication processes where strong, dependable joints are essential for structural integrity.
Food Processing IndustryForged Socket Weld Unions meet stringent hygiene standards and are used in processing and conveying food products safely.
Structural PipeUsed in the construction and maintenance of structural pipe systems where reliability and longevity are paramount.

Socket Weld Union Available Types

Forged Socket weld UnionSocket Weld Union 3000
Socket Weld Union Fittings2 Socket weld Union
ASME B16.11 Socket Weld Pipe Union3000LB Socket Weld Union
4 Socket Weld UnionClass 6000 Socket Weld Union
ANSI B16.11 Forged Socket Weld UnionBS 3799 Forged Socket Weld Union
Socket Weld Forged UnionSocket Weld Union Weight
2 Socket Weld UnionHigh Quality Socket weld Union
3000# Forged Socket Weld UnionANSI B16.11 Socket Weld Pipe Union
Union doble Socket WeldSocket Weld O-ring Union
Tube Socket Weld UnionSocket Weld Hammer Union
Union Universal Socket WeldTuerca Union Socket Weld
3/4 Socket Weld UnionSocket Weld Tube Union
Union Socket Weld 6000Socket Weld Dielectric Union
1 1/2 Socket Weld UnionSocket Weld Orifice Union

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Frequently Asked Questions

A reducing insert is a type of pipe fitting used to connect two pipes of different diameters. It is inserted into the end of a larger pipe to reduce the diameter to accommodate a smaller pipe, ensuring a smooth transition between sizes. This fitting is essential for applications where a reduction in pipe size is needed without compromising the integrity of the piping system.

Socket weld unions are available in various sizes to match different pipe diameters. Standard sizes generally range from 1/8 inch to 4 inches, with custom sizes available upon request to meet specific needs.

Socket weld unions are installed by inserting the pipe ends into the union’s sockets and applying fillet welds around the joints. The central nut is then tightened to secure the connection. The installation process involves aligning the pipes and union, ensuring proper fit-up, and performing the welds to secure the connections. This creates a robust and leak-proof joint.

Yes, we offer custom manufacturing solutions for socket weld unions to meet specific requirements. Please contact us with your specifications, and we will work with you to produce the unions you need.

The lead time for socket weld unions depends on the complexity and volume of the order. After reviewing your specifications, we will provide an estimated lead time. We strive to deliver all projects on schedule while maintaining the highest quality standards.

Socket weld unions are typically made from materials such as carbon steel, stainless steel, alloy steel, and other metals. The choice of material depends on the specific application’s requirements, including the type of fluid, temperature, pressure, and environmental conditions.

Socket weld unions are used in various industries, including oil and gas, petrochemical, power generation, water treatment, and construction. They are essential for applications where pipes need to be frequently disassembled and reassembled for maintenance, repairs, or system modifications.

Socket weld unions are manufactured to comply with various industry standards, such as ASME B16.11, MSS SP-83, and DIN standards. These standards specify the dimensions, tolerances, and material requirements for socket weld unions to ensure compatibility and reliability in piping systems.

Socket weld unions offer several advantages, including:

  • Strong, leak-proof connections ideal for high-pressure applications
  • Easy disconnection and reconnection of pipes without cutting
  • High strength and durability
  • Compatibility with various materials and sizes
  • Compliance with industry standards for quality and reliability