... G3454,JIS G3455,JIS G3456,JIS G3457,JIS G3461MaterialQ235, 20#, Q345A53B, A106B, API 5L B,X42,X46,X52,X60, X65ST37.0,ST35 ... , structure, petrochemical, pharmaceutical industrySurface Black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE,etc.PackagePlastic caps on both ends ... . Reliable forwarder, 2-hour away from port. ASTM A 53 hot-rolled seamless steel pipe