大口徑無(wú)縫鋼管規(guī)格 22-28X2.5-4-6大口徑無(wú)縫鋼管規(guī)格 32-38-40X3-4-6-8大口徑無(wú)縫鋼管規(guī)格 42-48X3.5-4-5-8-10大口徑無(wú)縫鋼管規(guī)格 51-60X3.5-5-6-7-9大口徑無(wú)縫鋼管規(guī)格 76-89X4.5-6-8-10-12大口徑無(wú)縫鋼管規(guī)格 108-133X5-6-8-10-12大口徑無(wú)縫鋼管規(guī)格 159-168X7-8-10-14-18-26大口徑無(wú)縫鋼管規(guī)格 194-219X6-8-12-20-26-38大口徑無(wú)縫鋼管規(guī)格 245-273X10-12-14-16-22-15-40大口徑無(wú)縫鋼管規(guī)格 325-355.6X11-14-16-20-30-40大口徑無(wú)縫鋼管規(guī)格 377-426X11-14-16-20-25-40-45大口徑無(wú)縫鋼管規(guī)格 426-508X14.2-17.5-22-45-52大口徑無(wú)縫鋼管規(guī)格 530-558.8X16.8-60-70