... ,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 ... production process are made under the ISO9001:2000 strictly. Stainless Steel Pipe Flange