erw straight welded pipe erw直缝焊管
large-sized straight welded pipe 大口径直缝焊管
Small-sized straight welded pipe 小口径直缝焊接钢管
hi-frequency straight welded pipe 高频直缝焊管
high-frequency straight seam welded pipe 高频直缝焊接钢管
frequency straight seam welded pipe 高频直缝焊接钢管
straight welded steel pipe 直缝管 ; 直缝焊钢管
straight-seam welded pipe 直缝焊管
straight welded-steel pipe 直缝焊接钢管
The flying sawing machine is one of the key units of the straight welded pipe production line.
飞锯是直缝焊管生产线上的关键设备之一。
The company now has six high-frequency straight seam welded pipe units, three hot-dip galvanizing line.
公司现拥有六条高频直缝焊管机组，三条热镀锌生产线。
The large diameter straight welded steel pipe is now flourishing developed.
大口径直缝焊管正在蓬勃发展；
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