| 摘要 |
A device for welding of soft steel pipe by resistance welding and of high-alloyed steel pipe by arc welding. It consists of two ways, one for each type of welding, which are synchronized to the machines for the preparation of the steel band and its shaping into a split tube. Because arc welding proceeds at considerably lower speed than resistance welding, a plurality of welders are provided together with means for assigning each split pipe length to one such arc welder. The combination of two different welding ways enables manufacture of seamed pipe from any grade of steel, a reduction of bulged-out end waste, perfect deburring of the seam and savings in time when changing dimensions, using high-alloyed steel.
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