For the main defects which affect spiral welded pipe quality, the material plate quality effect to strict specification pipe production is discussed, and the solving method is proposed.
针对影响螺旋焊管质量的几个主要缺陷，论述了原料带钢质量对生产高标准焊管的影响，并提出了解决方案。
Our product main material for high frequency steel pipe and PP import plastic product.
我们产品次要的资料为高频钢管和PP入口塑料产品。
The X grace steel sheet is used as main material for SAW straight weld pipes for pipe line purpose.
X级管线钢板材是生产直缝埋弧焊管的主要原材料。
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