However, there are a misunderstanding that has been heat-treated steel pipe ERW are quality assured, in fact, before the pipe weld heat treatment quality is very important.

 
  • 但国内存在这样一个误区,认为经过了热处理的ERW钢管都是质量有保证的,其实热处理前的钢管焊缝质量是相当重要的。
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