... ,ABS,DNV,BV,etc. 3.Material:carbon steel,SS,alloy steel 4.MOQ:10PCS Stainless Steel Pipe Flange TypFlangeSize1/2" - 80"(DN15 - ... DN2000)Wall thicknessSch5-Sch160XXSStandardANSI,ASME GB, SH,HG, MSS,JIS,DIN, APIMaterial1) Carbon Steel: ... ASTM A234WPB, WPC; ASTM A420 WPL9,WPL3,WPL6A;ST 37.2.2)Stainless Steel: ASTM A403 ...