... material 3.professional for years Carbon Steel seamless PipeStandardANSI,ASTM ,API.DIN,GB.JISMaterialA106 Gr A,B,A53 ... Gr B,ASTM A179,A106GrB,ASTM A53GrB,St42,St45,A179,A135,A315B,A214CA333 ... Gr 6,A335 P11,A335 P22,TP304,TP321,TP316,TP304L, ... strip,bundles,Caps , plastic wrap,loading belt ASTM A106 seamless steel pipe