... BSP3)Standard: ASME, B16.11,GB/T14383... 4)Material: Stainless steel: (1Cr18Ni9Ti, Cr18Ni9, 0Cr19Ni10, 0Cr17Ni12Mo2Ti, 304, 304L, 316, ... 316L ,F51,F52,F53,F44,347H,317Letc) Carbon steel (20#, ASTM A105, 16Mn, ASTM A403, ASTM A234) ... Alloy steel (Cr5Mo, 16MnR, 15CrMo, 12Cr1MoV, 10CrMo910)5)Thickness: Sch40 ... our soon pleasant cooperation. thread carbon steel elbow