临沂中大钢结构供应各种型号方管、镀锌方管关键字：钢结构，镀锌管，钢管，镀锌方管，焊管，热镀锌方矩管，方管，方矩管，镀锌焊管材质：Q215，Q235，Q345方矩管规格壁厚20*150.7-1.210*200.7-1.210*500.7-1.220*300.7-1.530*400.7-1.520*400.7-3.030*500.7-2.540*600.8-6.040*800.8-6.050*700.8-6.050*1001.0-6.060*1202.0-6.080*1602.0-6.0100*1502.0-6.0方管规格壁厚15*150.7-1.220*200.7-1.224*240.7-1.225*250.7-2.530*300.7-3.040*400.7-3.050*500.7-6.060*601.0-6.080*802.0-6.0100*1002.0-6.0)