KS M ISO 11127-4-2021 涂料和相关产品使用前钢衬底的制备.非金属喷砂清理磨料的试验方法.第4部分:通过玻片试验评估硬度
Preparation of steel substrates before application of paints and related products — Test methods for non-metallic blast-cleaning abrasives — Part 4: Assessment of hardness by a glass slide test