The ASME B16.9 Carbon Steel Butt Welding Cap is a fundamental piping component used to block the flow and permanently seal the end of a pipeline. Designed with a smooth, ellipsoidal profile, it provides superior pressure distribution and resistance to mechanical fatigue compared to flat closures. Manufactured from high-quality carbon steel like ASTM A234 WPB, it is easily welded to provide a leak-proof, maintenance-free termination in oil, gas, and industrial water systems.
Technical Attributes: Carbon Steel End Cap
Standard,ASME B16.9 (Factory-Made Wrought Fittings)
Material Grade,"ASTM A234 WPB, WPC"
Fitting Type,Pipe Cap / End Closure
Manufacturing,Seamless or Welded (W)
Forming Method,Hot Pressing / Cold Forming
End Connection,Butt Welding (BW)
End Preparation,Beveled per ASME B16.25
Size Range,1/2" to 60" (DN15 - DN1500)
Wall Thickness,"SCH 10, 40, 80, 160, XXS"
Carbon Content,≤0.30%
Tensile Strength,≥415 MPa (60 ksi)
Yield Strength,≥240 MPa (35 ksi)
Heat Treatment,"Normalizing (for thickness >1.5"")"
Testing,"Hydrostatic, Dimensional, Visual"
Hardness,≤197 HBW
Surface Finish,Black Varnish / Anti-rust Oil / Galvanized
Certification,EN 10204 3.1 / MTR
Application,"Oil, Gas, Steam, and Chemical Lines"
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