... , GB,BS high quality,low price! Name:Pipe FittingsProducts:Elbows,Reducers,pipe tees,bends,pipe caps...Material:Carbon steel,alloy steelStandard:ANSI,ASME ... industry, petroleum industry, construction industry, domestic installationSurface treatment:Shot blasted, rust-proof black oilCertificates:ISO9001-2008See products, don't understand the ...