... API, TUV...certificate 5.Punctual shipment Tianjin Binhai Guanghao Pipe Fitting Co. LTDMaterialCarbon Steel, Alloy Steel, SSStandardASTM ... customers, TJGH can provide the national standard, American standard, Germany standard, Japanese standard, Russia standard ... flange, elbow, pipe bend, pipe reducer, pipe tee, pipe cross, pipe nipple, pipe cap, pipe union and threaded pipe socket series component ...