... . 2.Materials 1)Carbon Steel:ASTM234WPB,WPC,ASTM A420 ,WPL9,WPL6.WPL3,WPHY-42,WPHY-46,WPHY-52,WPHY-60 ... ,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 ... .Remark:We can also supply some other pipe Fittings like flanges, tee, reducer etc.