... ,JIS,DIN,BS,GB,etc. 2.Materials 1)Carbon Steel:ASTM234WPB,WPC,ASTM A420 ,WPL9,WPL6.WPL3,WPHY-42,WPHY-46,WPHY ... ,WPHY-65,WPHY-70 2)Alloy Steel:ASTMA234WP,WP11,WP12,W0P22,WP5,WP91 3)Stainless Steel:astm a403,wp304/304l,wp316/316l,wp321 ... ,wp347,wps312544)Duplex &Super Duplex Stainless Steel:ASTM A815,UNS S31803,UNS S32750,UNS S32760 5)Special alloy ...