... Steel, Alloy Steel, Nickel Alloy Steel, Duplex Steel and Super Duplex SteelSteel Pipe TypeSeamless Steel Pipe, Welded Steel Pipe ... 10#, 16Mn, A106(B,C), 45#, API J55, API K55, St52, Q215, API N80, St37, API L80, API P110, St42, St45, St52.4API 5L ... Length or According to customers' requirements.Surface Treatment3PE, 3PP,EP and Black PaintingApplicationFluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe ...