... mm Black annealed cold rolled steel pipeStandard: BS 1387, BS 1139, BS EN10025, BS EN 3... Grade: 10#-45#, 16Mn, A53 ... rolled steel pipe Wall Thickness0.7mm-20mmStandardStandard: BS 1387, BS 1139, BS EN10025, BS EN 39,etcMaterialQ195,Q,215Q235,Q235B,.Q234BPlace ...