The ASME B16.11 A105 Forged Steel 3000# Socket Weld Union is a robust, three-piece coupling designed for high-pressure systems requiring frequent disassembly. Forged from ASTM A105 carbon steel, it features a precision-machined ground joint for a reliable metal-to-metal seal. The socket ends facilitate easy pipe alignment and permanent welding. Rated for 3000 PSI, it is essential for steam, oil, and gas lines, providing a maintenance-friendly alternative to flanged joints in small-bore piping.
Technical Attributes: A105 3000# Socket Weld Union
Standard,ASME B16.11 / MSS SP-83
Material Grade,ASTM A105 / A105N (Normalized)
Fitting Type,Socket Weld Union (3-Piece)
Pressure Class,3000 LBS (Class 3000)
Size Range,1/8" to 3" (NPS)
Components,"Male Tail, Female Tail, Union Nut"
Sealing Type,Ground Joint (Metal-to-Metal Seat)
End Connection,Socket Weld (SW)
Manufacturing,"Forged, Heat Treated, Fully Machined"
Carbon Content,≤0.35%
Manganese Content,0.60%–1.05%
Tensile Strength,≥485 MPa (70 ksi)
Yield Strength,≥250 MPa (36 ksi)
Heat Treatment,Normalizing (A105N)
Testing Standard,"UT, MT, Visual, Hardness Testing"
Hardness,≤187 HBW
Surface Finish,Anti-rust Oil / Black Phosphated / Galvanized
Certification,EN 10204 3.1 / MTR
Primary Use,High-Pressure Maintenance & Disconnects
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