感应压力焊常用于生产电站蒸汽管对接接头； 但在抽检样品时接头断口上有时存在所谓的“白斑”组织。
Induction pressure welding is often used to manufacture the butt joints of steam pipe of power plant.
通过几年来的实践，摸索总结出了一种螺旋焊管对接新方法——两点点固对接法。
Having been practiced for several years, a new butt method for spiral welded pipe, the two spots tack-weld butt was made out.
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