... ,BS1387-1985,DIN2440,GB/T3091-2008,EN39,BS1139Material Carbon steel :ASTM A 53/A106 GR,B ,X42.X52. Q195,Q235,Q345...... Quality ... Widely used as the pipeline of industrial and civilian water, air, petroleum, natural gas, communication and so onPacking Black Painting, Caps, Bevel ... , Europe, Africa, etc.Contact Person Amanda Cui 15563512134 API 5L ASTM A 53/A106 Gr.B seamless steel tube,line pipe & oil ...