... WPC; ASTM A420 WPL9,WPL3,WPL6A;ST 37.2.2)Stainless Steel: ASTM A403 WP304/304L, WP316/316L,WP321,WP3473) ... , WP12, WP11,WP22,WP5, WP9,WP914)Duplex & Super Duplex Stainless Steel :ASTM A815 UNS S31803,UNS S32750, UNS S32760PackagingWooden Cases ... b w elbow11. welded elbow12. stainless steel elbow13. alloy steel elbow14. seamless carbon steel elbow15. carbon steel seamless elbow high quality steel elbow