... &L/C 3.considerate service 4. high quality & competitive price API 5L X42 Steel Pipe MaterialCarbon Steel, Stainless Steel, Alloy Steel ... Seamless Pipe, Cold-rolling Seamless PipeStandardASTM, DIN, GB, BS, JIS, ASME, API, AISI,, ANSIGradeA333 GR3,GR6A335 P5,P9,P11,P12,P22,P91 ... ), 10#, 16Mn, A106(B,C), 45#, API J55, API K55, St52, Q215, API N80, St37, API L80, API P110, St42, St45, St52.4API 5L A ...