... Flange: Production Name forged welding neck flanges,St37,DIN,DN:50-600 mm,rated pressure:10 bar Size1/4''-48'',DN8 ... B16.9, ANSI B16.28, DIN , ISO, EN,JIS,MSS SP, BSCarbon Steel 10# 20# Q235B A234 A105 A403Stainless Steel 1Cr18Ni9Ti ... Third Party inpection forged welding neck flanges,St37,DIN,DN:50-600 mm,rated pressure:10 bar