The species and composition of contamination on the surface of coldrolledsteel plates were investigated. Comparison between china made and imported coldrolledsteel products was carried out.
研究和分析了国产冷轧低碳钢板试样表面污染物的种类及成分，并且与进口同类钢板进行了比较。
2
A method of analysing the gauge tolerance standards of cold-rolledsteel sheet was put forward.