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.
管采用长的去除内毛刺的电焊管或无缝管作为坯管，经感应加热后进行张力减径，然后热卷曲成卷。
The PIC tube is made of long, internally deburred electrical weld tube or seamless steel tube by means of induction heating, stretch reducing and hot coiling.
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