... Standard: API 5L Grade:API 5L ASTM A53/A106 GR.B O.D.:10.3-610 mm W.T :3-40mm Brand: ... Tigersteel API 5L ASTM A 53/A106 Gr.B seamless ... -2008,EN39,BS1139Material Carbon steel :ASTM A 53/A106 GR,B ,X42.X52. Q195,Q235,Q345...... Quality PrimeTechnique ERW, seamless ... CFR,CIF,Payment T/T 20% advance ,blance against of B/L copy Market East Asia, Southeast Asia, Middle East, ...