Through the contrast between national ERW pipe application and detail case with foreign country,the article analyzes the difference of national ERW pipe quality and oversea and its causes.

 
  • 通过简述国内外ERW钢管的应用状况以及具体实例对比,分析了国内ERW钢管实物质量与国外产品的差距以及产生的原因。
今日热词
目录 附录 查词历史