Product Name: Stainless Steel Socket Weld Union
Product Type: Forged Pipe Fitting – Socket Weld / Threaded Union
Size Range: DN6 (1/8") – DN50 (2")
Pressure Rating: 3000LB, 6000LB, 9000LB
Connection Type: Socket Weld / Threaded
Surface Finish: Sand Blasted, Cold & Hot Dip Galvanized
Application: Oil & Gas, Petrochemical, Power Plants, Industrial Pipelines
Inspection: Dimensional Check, PMI, UT, MT, RT (as required)
The Stainless Steel Socket Weld Union (SS Union) is a precision-forged pipe fitting designed to provide easy disconnection and maintenance in high-pressure piping systems. Manufactured in accordance with ASME B16.11, it ensures:
Leak-tight and reliable sealing performance
High mechanical strength and pressure resistance
Convenient installation and dismantling
Suitability for high-pressure and high-temperature service
Full compliance with international standards
SS Union fittings are widely used in oil & gas pipelines, petrochemical plants, power generation systems, and industrial fluid transmission, where frequent pipeline maintenance or component replacement is required.
| DN | NPS | Total Length L (mm) | Flow Path D (mm) | Socket Depth J (mm) | Socket Outside Diameter A (mm) | Weight (KG) |
|---|---|---|---|---|---|---|
| DN6 | 1/8” | 45 | 8.5 | 9.5 | 26.52 | 0.30 |
| DN8 | 1/4” | 45 | 11.5 | 9.5 | 26.52 | 0.30 |
| DN10 | 3/8” | 45 | 15 | 9.5 | 26.52 | 0.25 |
| DN15 | 1/2” | 49 | 19 | 9.5 | 31.84 | 0.34 |
| DN20 | 3/4” | 58 | 24 | 12.5 | 37.3 | 0.54 |
| DN25 | 1” | 63.2 | 30 | 12.5 | 45.88 | 0.78 |
| DN32 | 1 1/4” | 71 | 39 | 12.5 | 54.94 | 1.09 |
| DN40 | 1 1/2” | 80.5 | 44 | 12.5 | 61.5 | 1.49 |
| DN50 | 2” | 86.8 | 46.5 | 16 | 74.66 | 2.05 |
ASME B16.11
BS 3799
JIS B2316
GB/T 14383
SH3410
HG/T21634
SS Union fittings are manufactured in full compliance with international standards, ensuring compatibility with global piping systems.
We offer a wide range of materials to meet different pressure, temperature, and corrosion resistance requirements:
Stainless Steel: ASTM F304, F304L, F316, F316L
Carbon Steel: ASTM A105, A350 LF2 / LF6, Q235, Q345
Duplex & Super Duplex Steel: ASTM A182 F51, F53, F55, S31803, S22253, S32205, S22053
Alloy Steel: ASTM F5, F9, F11, F22, F91
Nickel & Copper Alloys: Inconel, Monel, Hastelloy, Alloy 20, Cu-Ni 90/10, 70/30
All materials are supplied with full material test certificates (MTC) and complete traceability.
Raw Material Inspection
Free Forging / Die Forging
Heat Treatment (Normalizing, Quenching, Tempering)
CNC Precision Machining
Dimensional and Non-Destructive Testing
Forged construction provides superior metal structure, strength, and long-term durability.
Each SS Union fitting undergoes strict quality inspection:
Dimensional Check
Chemical Composition Analysis
Ultrasonic Testing (UT)
Magnetic Particle Testing (MT)
Radiographic Testing (RT)
Ensuring stable quality and compliance with international standards.
Oil & Gas Pipelines
Petrochemical Plants and Refineries
Power Plants and Industrial Pipelines
High-pressure and High-temperature Fluid Systems
Offshore and Onshore Industrial Projects
SS Union fittings play a critical role in maintaining safe, stable, and efficient pipeline connections.
Wide size range from DN6 (1/8") to DN50 (2")
Pressure ratings up to 9000LB
Fully compliant with ASME, BS, JIS, GB, SH/T standards
Multiple material options for corrosive and harsh environments
Reliable quality for long-term industrial and oil & gas applications
