GB/T 18838.4-2008 涂覆涂料前钢材表面处理 喷射清理用金属磨料的技术要求 第4部分: 低碳铸钢丸 Preparation of steel substrates before application of paints and related products-Specifications for metallic blast-cleaning abrasives - Part 4:Low-carbon cast-steel shot
Preparation of steel substrates before application of paints and related products-Specifications for metallic blast-cleaning abrasives - Part 4:Low-carbon cast-steel shot