... -2008,EN39,BS1139Material Carbon steel :ASTM A 53/A106 GR,B ,X42.X52. Q195,Q235,Q345...... Quality PrimeTechnique ERW, seamless, weldedO.D. 1 ... Widely used as the pipeline of industrial and civilian water, air, petroleum, natural gas, communication and so onPacking Black Painting, Caps, Bevel ...