... Steel, Alloy Steel, Duplexsuper duplex stainless steelASTM: Carbon Steel: ASTM A234 WPB, WPC; ASTM A420 WPL9, WPL3, WPL6, WPHY-42, WPHY-46, WPHY ... , SUS316, SUS316L, SUS321Alloy Steel: PA22, PA23,PA24, PA25, PL3804) Standards: ANSI B16.9, B16.28, DIN2605,DIN2609, DIN2615, DIN2616, DIN2617, JIS2311 ... can also produce according to the customer requirement. X70 seamless 90 DEG Elbow for pipeline project