采用高强度级别钢种的卷板制造螺旋焊管的过程中，包申格效应使钢管屈服强度降低的现象日益突出。

In the process of using high strength steel to produce spirally welded pipe, the yield strength is reduced due to Bauschinger's effect.

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螺旋焊管是以带钢卷板为原材料，经常温挤压成型，以自动双丝双面埋弧焊工艺焊接而成的螺旋缝钢管。

Spiral welded pipe is a strip coil as raw material, often warm extrusion molding, to automatically double-wire submerged arc welding process double-sided spiral welded pipe joints.

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