涂覆涂料前钢材表面处理 喷射清理用金属磨料的试验方法 第5部分:缺陷颗粒百分比和微结构的测定
Preparation of steel substrates before application of paints and related products-Test methods for metallic blast-cleaning abrasives-Part 5:Determination of percentage defective particles and of microstructure