无缝管销量与上一季度相比，分别增长2%，焊管的销售下降了15%和项目的焊接产品的销售下跌了9%。
Compared to the previous quarter, seamless tube sales volumes were up 2 percent, welded tube sales fell 15 percent and sales of welded products for projects slumped 9 percent.
无缝线路长钢轨通常由铁路焊轨厂或现场焊轨基地焊接。
Long rails in jointless track are usually made on welded rail site or in railway welded rail factory.
无缝线路长钢轨通常由铁路焊轨厂或现场焊轨基地焊接。
Long rails in jointless track are usually made on welded rail site or in railway welded rail factory.
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