GB/T 18570.9-2025

Preparation of steel substrates before application of paints and related products—Tests for the assessment of surface cleanliness—Part 9: Field method for the conductometric determination of water-soluble salts

涂覆涂料前钢材表面处理 表面清洁度的评定试验 第9部分：水溶性盐的现场电导率测定法