OD:15X15mm-400X400mm WT:0.9mm-14.0mm Length:6m material:Q195-Q345 1 High-frequency welded pipe, ERW, Welded pipeOD:15mm*15mm—400mm*400mmWT:1.0mm-14.0mm2 Extra Treatments: Hot dip galvanized, Oiled, Painting, Sizing, Bead Removing, etc.3 Standards: GB/T3091-2001, BS21/BS1387-1985, ASTM A53-19964 Material: Q195, Q215, Q235, Q3455 Leading Time: The delivery time depends on your qty and dimensions6 ...