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 seam welded 直缝焊接
straight-seam welded pipe 直缝焊管
straight-seam welded tube 直缝焊管
straight seam welded tubes 直缝焊管
straight seam welded steel tube 直缝焊接钢管
The large dia. straight seam welded pipes are mainly used to transport oil, natural gas, coal pulp and other liquids.
大直径直缝焊管主要用于石油、天然气、水煤浆及各种液体的管道输送。
This paper describes the production process for plate used for large-calibred straight seam welded pipeline.
介绍了大口径直缝焊接钢管用钢板的生产工艺。
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。
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