... #, 45#16Mn, St52, St42 Carbon steel butt welded seamless pipe fitting Standard:JIS G3454-2007, JIS GB/T ... Grade: ... #, 45#16Mn, St52, St42 Carbon steel butt welded seamless pipe fitting details: 1: API certificate. 2: 3,000,000 ... Non-secondaryApplication: Fluid PipeTechnique: Hot RolledCertification: APISurface Treatment: paintSpecial Pipe: API PipeAlloy Or Not: Non-alloyASTM: 20#ISO: blackPackaging & ...