... C 3.considerate service 4. high quality & competitive price API 5L X42 Steel Pipe MaterialCarbon Steel, Stainless Steel, Alloy ... 10#, 16Mn, A106(B,C), 45#, API J55, API K55, St52, Q215, API N80, St37, API L80, API P110, St42, St45, St52.4API 5L ... Diameter1/2''-48''Wall Thickness2-59.54mmLengthSingle Random Length, Double Random Length or According to customers' requirements.Surface Treatment3PE, ...