张力减径机管
Tension reducer tube
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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.
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