提出了2 1世纪中国建设大口径直缝埋弧焊钢管生产线及管线钢用宽厚板国产化的必要性。
It also raises the necessity that China shall build LSAW pipe production line and produce wide and thick plate for pipeline steel in 21 century.
提出了2 1世纪中国建设大口径直缝埋弧焊钢管生产线及管线钢用宽厚板国产化的必要性。
It also raises the necessity that China shall build LSAW pipe production line and produce wide and thick plate for pipeline steel in 21 century.
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