... ...certificate 5.Punctual shipment Product CatalogueTianjin Binhai Guanghao Pipe Fitting Co. LTDMaterialCarbon Steel, Alloy Steel, SSStandardASTM , ANSI, DIN, GB, JB/ ... carbon steel, stainless steel, alloy steel material of the flange, elbow, pipe bend, pipe reducer, pipe tee, pipe cross, pipe nipple, pipe cap, pipe union and threaded pipe socket ... you are free.Thanks and Welcome API 5L line pipe