... F OEM forged auto valve parts1.Material a)carbon steel SA234 WPB, SA234 WPC,SA42 WPL6, SA42 WPL3, WP1. MSS-SP75 ,WPHY,WPHY ... SUS304,SUS304, SUS304L, SUS316, SUS316 c) Alloy Steel: ASTM/ASME SA234 WP12, WP11,WP22, WP5, WP9, WP91.ASTM B361 GR.3003 ...