welded seam can 熔接罐
The spiral welded pipe weld seam probe frame has the benefits that: (1) the flexible spindle is adopted, so that a probe and a weld seam can be fully closed, so as to reduce error;
本发明的有益效果是：1）采用柔性主轴，使探头和焊缝能保证完全弥合，减少误差；
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