... 光参量 optical parameter 钢管张力减径机 steel tube stretch-reducing mill 聚四氟乙烯 polyfluortetraethylene ...
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焊管经张力减径机处理后有人称之为“焊管无缝化”，这种焊管与无缝钢管在一些质量指标上仍存在差异。
After welded pipes are treated by reducing tension mills known as "welded pipe seamless process". There are still some differences between welded pipe and seamless pipe in quality index.
分析了微张力减径机轧辊位移的产生原因以及对钢管外表面质量的影响。
The paper analyzed the causes of roll displacement on mini-stretch reducing mill and the influences of displacement on external-surface quality of steel pipe.
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