ASTM A106 seamless steel pipe 1.size range OD:22-530mm 2.more grades of 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 ... hot expandPacking6 steel strip,bundles,Caps , plastic wrap,loading belt ASTM A106 seamless steel pipe