Forged Socket Weld Fittings Union

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As a top exporter, distributor, and stockist, Kaizen Steel Industries, offers a wide range of Socket Weld Union Fittings to meet customer needs.  Stainless Steel Socket Weld Unions are commonly used in low-pressure piping systems where frequent disassembly is required. 

A Forged Socket Weld Union is a three-piece fitting with two internal threads and a center piece that pulls the ends together when rotated. To prevent warping of the seats, the unions should be screwed tightly before welding the ends. ANSI B16.11 Socket Weld Union fittings can be customized to fit specific size requirements as requested by customers.

We are a leading manufacturer and supplier of ANSI B16.11 Socket Weld Unions, including Stainless Steel Socket Weld Unions. Our products adhere to the ASME B16.11 standard, which specifies tolerances, ratings, dimensions, marking, and material requirements for both socket-welding and threaded forged fittings. The SS 310 Socket Weld Union fittings are available in pressure classes 3000, 6000, and 9000 for socket-weld end fittings.

The ASME B16.11 specification should be used alongside other relevant ASME standards, such as the Boiler and Pressure Vessel Code and the B31 Piping Codes, to ensure comprehensive compliance and performance.

A Duplex Steel Socket Weld Union is a pipe fitting used in piping systems. Welding this type of fitting to the pipe creates a permanent, leak-proof connection. These unions are available in sizes ranging from NPS ½ inch to 4 inches and come in various pressure classes including 2000#, 3000#, 6000#, 9000#, and 10000#. To choose the right size for your needs, refer to the socket weld union weight chart provided.

The ends of the socket weld union fitting are typically forged. Here are some advantages of using an ASME B16.11 Forged Socket Weld Union (Male x Female):

  • Cost-Effective: Socket weld unions are generally affordable.
  • Easy Installation: These unions are simple to install.
  • Removable Joints: They allow for easy disconnection between pipes.
  • Versatile: They can join pipes of different sizes as required.
  • Connection to Vessels: Duplex Steel Socket Weld Unions can also connect piping systems to vessels.
  • Leak-Proof: They provide a reliable, leak-proof connection.

Features of ASME B16.11 Socket Weld Unions:

  • Corrosion Resistance: Forged Socket Weld Unions offer excellent resistance to corrosion, which is crucial in piping systems. This resistance helps them withstand damage from chemical reactions and oxidation.
  • Durability: They are known for their durability, which, combined with their corrosion resistance, leads to a longer service life and better cost-effectiveness.
  • Weldability: ANSI B16.11 Forged Socket Weld Unions can be welded not only with similar materials but also with other materials. They also offer good formability.

Socket Weld Union Fitting Specification

DimensionsASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799
Size1/8″ NB TO 4″ NB
Pressure Ratings2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
FormSocket Weld Union, Socket Weld Pipe Union, Socket Weld Orifice Union, Forged Union, Socket Weld Union Fittings
Production GradesStainless Steel, Alloy Steel, Duplex, Nickel Alloys, Low-temperature Steel, Carbon Steel, Cupro Nickel

Manufacturing Standards of Socket Weld Union Fittings

ASME:ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799
DIN:DIN2605, DIN2615, DIN2616, DIN2617, DIN28011
EN:EN10253-1, EN10253-2

Forged Socket Weld Union Material Grades

Nickel Alloy Forged Socket Weld UnionASTM / ASME SB 336, ASTM / ASME SB 564 / 160 / 163 / 472, UNS 2200 (NICKEL 200) , UNS 2201 (NICKEL 201 ) , UNS 4400 (MONEL 400 ) , UNS 8020 ( ALLOY 20 / 20 CB 3 ) , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 (INCONEL 601) , UNS 6625 (INCONEL 625) , UNS 10276 (HASTELLOY C 276)
Stainless Steel Forged 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 Forged Socket Weld UnionASTM A 182 – F 51, F53, F55 S 31803, S 32205, S 32550, S 32750, S 32760, S 32950.
Carbon Steel Forged Socket Weld UnionASTM/ 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
Alloy Steel Forged Socket Weld UnionASTM / ASME A 182, ASTM / ASME A 335, ASTM / ASME A 234 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
Copper Alloy Steel Forged Socket Weld Union ASTM / ASME SB 111 UNS NO. C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200, C 70600 C 71500, ASTM / ASME SB 466 UNS NO. C 70600 ( CU -NI- 45/10) , C 71500 ( CU -NI- 70/30)

ANSI/ASME B16.11 Socket Weld Union Dimensions

asme-b-16.11-socketweld-fitting-union-dimensions
Nominal Diameter
Outside Diameter
Wall Thickness
Socket Bore
Water way Bore
Depth of Socket
Length Assem Nominal
Dmin
Cmin
d1
d2
Jmin
L
DN
NPS
 Socket
Threaded
Socket
Threaded
Socket
Socket & Threaded
Socket
Socket & Threaded
6
1/8
21.8
14.7
3.2
2.5
10.65
6.43
10
41.4
8
1/4
21.8
19.0
3.3
3.1
14.10
9.45
10
41.4
10
3/8
25.9
22.9
3.5
3.2
17.55
13.51
10
46.0
15
1/2
31.2
27.7
4.1
3.8
21.70
17.07
10
49.0
20
3/4
37.1
33.5
4.3
4.0
27.05
21.39
13
56.9
25
1
45.5
41.4
5.0
4.6
33.80
27.74
13
62.0
32
11/4
54.9
50.5
5.3
4.9
42.55
35.36
13
71.1
40
11/2
61.5
57.2
5.6
5.1
48.65
41.20
 13
76.5
50
2
75.2
70.1
6.1
5.6
61.10
52.12
16
86.1
65
21/2
91.7
85.3
7.7
7.1
73.80
64.31
16
102.4
80
3
109.2
102.4
8.4
7.7
89.80
77.27
16
109.0

Forged Socket Weld Union Applications

ASME B16.11 Socket Weld Unions are known for their excellent performance and are designed to meet various industry needs. We offer a wide range of Forged Socket Weld Unions through our global network of stock-keeping branches. These unions are used in numerous industries, including:

  • Oil and Gas Pipelines: Stainless Steel Forged Socket Weld Unions
  • Chemical Industry: Forged Socket Weld Unions
  • Plumbing: Alloy Steel Socket Weld Unions
  • Heating Systems: Forged Socket Weld End Unions
  • Water Supply Systems: Socket Weld Forged Unions
  • Power Plants: ANSI B16.11 Forged Socket Weld Unions
  • Paper & Pulp Industry: Socket Weld Unions
  • General-Purpose Applications: Forged Socket Weld Unions
  • Fabrication Industry: Forged Socket Weld Unions
  • Food Processing Industry: Forged Socket Weld Unions
  • Structural Piping: Forged Socket Weld Unions

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