In the production of spiral weld pipe, the quality of the online automatic submerged arc welding is of significant importance to the final steel pipe product.
在螺旋焊管的生产过程中，在线埋弧自动焊的焊接质量对最终钢管产品的质量具有十分重要意义。
The utility model relates to an automatic arc blocking device for electric and arc weld, which belongs to the photoelectric control field.
本实用新型涉及一种电、氧焊自动挡弧装置，它属于光电控制领域。
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