welded pipe Standard:GB/T3091-2001, ASTM A53, BS1387-1985, Grade:Q195, Q215, Q235, Q345B, Gr.A/ Hot Dipped Galvanized Steel PipeO.DO.D toleranceW ... order : 10 MT4) Delivery period : 10 to 30 Days . Rectangular Steel PipeSizeW.T20*40----200*4001.2--14MMLength2--12M , according to ... MT (10,000KGS)4)Delivery period : 10 to 30 Days . .. ASTM A53 406.4mm galvanized pipe / seamless steel pipe bevel cuting