frequency straight seam welded pipe
... 直缝电焊钢管 Longitudinal electric resistance welded steel tubes 高频直缝焊接钢管 frequency straight seam welded pipe 直缝埋弧焊钢管 LSAW ; SAWL ...
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frequency straight seam welded pipe
频率直缝焊管
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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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