... , DIN,JIS, BS 2.carbon/stainless/alloy/Aluminum steel Description of Flange: Production Name forged welding neck flanges,St37,DIN,DN ... B16.28, DIN , ISO, EN,JIS,MSS SP, BSCarbon Steel 10# 20# Q235B A234 A105 A403Stainless Steel 1Cr18Ni9Ti 0Cr18Ni9 00Cr19Ni10 304 304L ... neck flanges,St37,DIN,DN:50-600 mm,rated pressure:10 bar