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。
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 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。
The corporation is specialized in manufacturing straight welded tubing and hot rolling no-seam steel pipe.
公司是专业生产直缝焊管及热扩钢管的企业。
The corporation is specialized in manufacturing straight welded tubing and hot rolling no-seam steel pipe.
公司是专业生产直缝焊管及热扩钢管的企业。
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