Seamless pipe ASTM A106GrB A53GrB A179,API5IGrB ST42,ST37 GB10 ... 10#, 20#, 35#, 45#, 16mnInspection and Test:Chemical Composition Inspection, Mechanical properties Test. 100% ECT, CT test.Our ... products'brief Instruction:Cold draw seamless steel tube/pipe ASTM/ASME: A106, A53, A179, A192, A213, ... /ST45/ST52) DIN17200( 40Cr/34CrMo4/CK45) API: Line Pipe( GR.B/X42/X46/X52/X60) Tubing( J55/N80 ...