... .8m 4) Material: hot dip square steel pipe 1.size:10*10mm-600*600mm2.thickness: ... API5L, API5CL Product square steel pipesStandardGB/T3091-2001,BS1387,ASTM A53, ASTM A106, EN10219MaterialQ195,Q215,Q235,Q345 ... , 20#, A53 A/B, A106 B/C, St37 ... in loose or seaworthy packing , wrapped with steel strip or at sellers optionUsageConstruction, bridge, highway, ...