1)size:1/2"to 72" 2)material:carbon steel,stainless steel,etc 3)standard:ANSI B16.5 4)WT:#150-#2500 ... B16.526"to 80" ASME B16.47TypeWNF, SO, SWF, BL, OF,LF,PLFaceRF, FF, MF, MFM, RJ, TG, RTJ, SRF, ... Mangement System Certificate,OHSAS18001 Occupational Health & Safety MangementSystem Certificate, acquired the license for manufacturing special pressure Pipline equipmentsfrom AQSIQ ,etcpackingin wooded ...