常用方管,矩形管,镀锌管,国标方管表常用方管,矩形管,镀锌管,国标方管表 国标方管常用规格: 20*20*0.62.0 130*130*3.012 25*25*0.62.0 140*140*3.012 30*30*0.83.0 150*150*3.012 40*40*0.8*4.0 160*160*4.012 50*50*1.0*5.0 180*180*4.012 60*60*1.26.0 200*200*4.014 70*70*2.06.0 220*200*4.016 75*75*2.06.0 250*250*6.016 80*80*2.08.0 280*280*6.016 90*90*2.08.0 300*300*6.016 100*100*2.012 350*350*8.016 120*120*3.012 400*400*8.016 125*125*3.014 450*450*10*20 焊接方管常用规格: 16×16×0.4~1.518×18×0.4~1.520×20×0.4~1.525×25×0.6~2.0 30×30×0.6~4.034×34×1.0~2.035×35×1.0~4.038×38×1.0~4.0 40×40×1.0~4.544×44×1.0~4.545×45×1.0~5.050×50×1.0~5.0 60×60×1.5~5.070×70×2.0~6.075×75×2.0~6.080×80×2.0~6.0 85×85×2.0~6.095×95×2.0~8.0100×100×2.0~8.0120×120×4.0~8.0 150×150×6.0~10.0180×180×6.0~12.0200×200×6.0~12.0 220×220×6.0~14.0250×250×6.0~14.0280×280×6.0~14.0 300×300×8.0~14.0320×320×8.0~14.0350×350×8.0~14.0 380×380×8.0~14.0400×400×8.0~14.0420×420×10.0~14.0 450×450×10.0~14.0480×480×10.0~14.0500×500×10.0~14.0 无缝方管常用规格: 30*30*1.03.040*40*2.05.050*50*2.05.060*60*3.06.070*70*3.06.0 80*80*3.08.0100*100*3.010.0120*120*4.012.0140*140*5.012.0 150*150*5.014.0180*180*5.014.0200*200*5.016.0250*250*6.018.0 300*300*8.020.0350*350*8.020.0400*400*10.025.0500*500*10.030.0 无缝矩形钢管常用规格: 20×30×1.0~3.020×40×1.0~3.020×50×1.0~3.022×35×1.0~3.0 25×40×1.0~3.025×65×1.0~4.030×40×1.0~3.030×45×1.0~3.0 30×50×1.0~4.030×60×1.0~4.540×50×1.0~4.540×60×1.0~5.0 40×80×2.0~5.040×100×2.0~5.050×60×2.0~5.050×80×2.0~5.0 50×100×2.0~8.060×80×2.0~6.080×100×2.0~8.0120×60×2.5~10.0 120×80×2.5~10.0150×100×2.5~12.0180×150×2.5~12.0200×100×4~12.0 200×150×4~12.0250×150×6~12.0250×100×6~12.0250×200×6~12.0 300×150×6~12.0300×200×6~12.0300×250×6~12.0400×250×8~12.0 400×300×8~12.0450×200×...