Forged Unions

Stainless Steel Socket weld Unions, Alloy Steel Forged Unions, ASME B16.11 CS Forged Unions Suppliers in India.

Nickel Alloy Threaded Unions, Duplex Steel Socket weld Unions Exporter, SS Forged Unions Leading Manufacturers.

AB Steel is one of the largest exporter, manufacturer and supplier of Forged Socket weld Threaded Unions in India. They are extensively required in the pipe fitting market. Any type of small diameter piping links necessitating an optimistic seal and stress-free association as well as disassembly are manufactured by means of the assistance of pipe union. In other words, the pipe unions can separate two pipes very much effortlessly.

Pipe Union is a category of fitting apparatus considered in such a method to bond two pipes that can be disconnected devoid of causing any distortion to the pipes. Our Forged Socket weld Threaded Unions can further be customized in terms of thicknesses, sizes and specifications as per the specific requirements of our clients.

What Are Forged Unions?

Forged Unions are manufactured in accordance with ANSI/ASME B16.11 using stainless steel, carbon steel, duplex, and nickel alloys in pressure classes from 2000# to 9000#. They connect two pipe ends while allowing easy disconnection without cutting or welding, enabling faster maintenance in critical systems.

AB Steel is a trusted manufacturer supplying high-quality forged fittings for demanding industrial applications. Socket weld unions are suited for permanent high-pressure use, while threaded unions in NPT, BSP, and BSPT are preferred where frequent disassembly is required.

All unions comply with NACE MR0175/ISO 15156 and are used in oil and gas, chemical, power, and pharmaceutical sectors.

ANSI / ASME B16.11 Forged Unions Specification

Size : 1 / 4" NB TO 4" NB

Standards : ASTM A182, ASTM SA182

Dimension : ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799

Class : 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS

Type : Socketweld Fittings & Screwed-Threaded NPT, BSP, BSPT Fittings

Form : Union, Union Male / Female

Our Forged Unions conforms to NACE MR0175/ISO 15156

Forged Unions Material & Grades

Stainless Forged Unions :

ASTM A182, ASTM / ASME SA 358, ASTM / ASME SA 312 GR. TP 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L.

Alloy Steel Forged Unions :

ASTM / ASME A 182, ASTM / ASME A 335 GR P 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91, ASTM / ASME A 691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9CR, 91

Carbon Steel Forged Unions :

ASTM/ ASME A 105, ASTM/ ASME A 350 LF 2, ASTM / ASME A 53 GR. A & B, ASTM A 106 GR. A, B & C. API 5L GR. B, API 5L X 42, X 46, X 52, X 60, X 65 & X 70. ASTM / ASME A 691 GR A, B & C

Copper Alloy Steel Forged Unions :

ASTM / ASME SB 61 / 62 / 151 / 152. C 70600 (CU -NI- 90/10) – Cupro Nickel, C 71500 (CU -NI- 70/30) – Copper Nickel, UNS NO. C 92200, UNS NO. C 83600, UNS NO C 10100, C 10200, C 10300, C 10800, C 12000, C 12200

Duplex & Super Duplex Steel Forged Unions :

ASTM A 182 – F 51, F53, F55 S 31803, S 32205, S 32550, S 32750, S 32760, S 32950.

Nickel Alloy Forged Unions :

ASTM / ASME SB 564 / 160 / 472- UNS 10276 (HASTELLOY C 276), UNS 2200 (NICKEL 200), UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8020 (ALLOY 20), UNS 8825 INCONEL 825, UNS 6600 (INCONEL 600), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625)

Types of Forged Unions

Forged unions are available in configurations engineered to address specific end connection requirements, pressure ratings, and installation conditions across industrial piping systems.

• Socket weld unions accept the pipe end into a recessed socket, secured with a fillet weld, and are the standard choice for high-pressure, permanent piping installations where joint integrity under sustained cyclic loading is critical.
• Threaded unions use NPT, BSP, or BSPT screwed connections, making assembly and disassembly straightforward without any welding requirement. They are widely used in instrumentation lines, low-to-medium pressure systems, and locations where hot work restrictions apply.
• Male and female unions are a three-piece assembly incorporating a separate seat that ensures a leak-proof metal-to-metal seal, commonly specified in chemical and process piping where vibration and thermal cycling are ongoing concerns.

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