Union

Stainless Steel Gaskets

The forged union is an essential fitting in piping systems, designed to connect two pipes or tubes while allowing for easy disassembly and reassembly. Known for its versatility and convenience, this component is widely used in various industrial applications, including oil and gas, chemical processing, and HVAC systems.


Crafted from high-quality forged steel, the union provides exceptional strength and durability, ensuring a secure and leak-proof connection. It complies with stringent international standards, such as ASTM, ASME, and DIN, to deliver reliable performance and longevity even in demanding conditions.


Material Grades :

Material TypeGrades
Carbon SteelASTM A 105/A694/ A350 LF3/A350 LF2 - F42, F46, F52, F56, F60, F65, F70
Stainless SteelASTM / ASME A/SA 182 - F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L
Duplex & Super DuplexASTM / ASME A/SA 182 - F44, F45, F51, F53, F55, F60, F61
Nickel200, 201
Monel400
Inconel600, 601, 625, 800, 825
HastelloyC-276

Union Specifications:

SpecificationDetails
MaterialForged Steel (e.g., ASTM A105, A350 LF2, A694 F65)
TypeUnion
Temperature Range-50°C to 450°C (-58°F to 842°F) (varies with material)
Pressure RatingUp to 6000 psi (varies with material and design)
StandardsASME B16.11, API 5CT
Sizes1/2" to 4" (varies with material and design)
ApplicationsOil & Gas, Petrochemical, Chemical Processing, Waterworks, HVAC Systems
Production TechniqueForged and Machined from Solid Steel

Dimension Chart :

Nom. Pipe SizePipe End MinSocket Bore Dia.Socket Wall Min.Water Way BoreLaying LengthMale Flange Min.Nut Min.Threads Per 25.4 MaxBearing Min.Depth of Socket Min.Length Assem. NominalClear Assem. Nut
 ABCDEFGHJKLN
1/821.810.92
10.67
3.176.83
6.43
22.4
19.0
3.173.17161.249.641.149.0
¼21.814.22
13.97
3.309.85
9.45
22.4
19.0
3.173.17191.249.641.449.0
3/825.917.78
17.53
3.4813.92
13.51
26.9
20.6
3.433.43141.379.646.055.0
½31.221.84
21.59
4.0617.47
17.07
26.9
20.6
3.683.68141.509.649.057.0
¾37.127.18
26.92
4.2721.79
21.39
31.8
25.4
4.064.06111.6812.756.967.0
145.534.04
33.78
4.9528.14
27.74
34.3
26.2
4.574.44111.8512.762.079.0
11/454.942.67
42.42
5.2835.76
35.36
40.6
32.5
5.335.21112.1312.771.194.0
11/261.548.77
48.51
5.5441.61
41.20
42.2
34.0
5.845.59102.3112.775.5111.0
275.261.47
61.21
6.0552.53
52.12
45.3
37.3
6.606.35102.6915.886.1132.0
21/291.774.17
73.66
7.6564.72
64.31
61.7
52.1
7.497.1183.0715.8102.4148.0
3109.290.17
89.66
8.3177.67
77.27
63.8
53.6
8.258.0083.5315.8109.0175.0

Applications of Union Forged Fittings:

Union forged fittings are highly versatile components used to connect two pipes or tubes, providing an efficient solution for easy assembly and disassembly in various industrial applications. Key areas of application include:

  • Oil and Gas Industry: Used in pipelines and equipment for easy maintenance and repairs, ensuring a secure and leak-proof connection under high pressures and harsh conditions.
  • Chemical Processing: Essential for connecting pipes and equipment that handle corrosive chemicals, allowing for quick and safe disassembly for cleaning and inspection.
  • Water Treatment: Employed in filtration systems and pipelines to enable convenient disassembly for maintenance and replacement of components.
  • HVAC Systems: Used in heating, ventilation, and air conditioning systems for connecting various pipes and ensuring easy access for maintenance and repairs.
  • Food and Beverage Industry: In processing and packaging equipment where sanitary conditions are crucial, allowing for easy cleaning and reassembly.
  • Pharmaceutical Industry: Utilized in systems where sterile connections are required, providing a reliable and easy-to-maintain solution for critical processes.
  • Fire Protection Systems: Installed in sprinkler systems and fire suppression equipment for quick installation and maintenance, ensuring reliable operation in emergency situations.