... Name forged welding neck flanges,St37,DIN,DN:50-600 mm,rated pressure:10 bar Size1/4''-48'',DN8-DN1200WTSCH5S-XXSStandardANSI ... 304L 316 316L Alloy Steel16Mn Cr5Mo 12Cr1MoV A335P22 St45.8ASTM A860 WPHY X42 X52 X60 X70 Aluminum Steel1060,2024,2017,3003 ... inpection forged welding neck flanges,St37,DIN,DN:50-600 mm,rated pressure:10 bar