GB/T 8923.1-2011 《Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previou》 Related products

GB/T 8923.1-2011 "Visual assessment of surface cleanliness of steel surfaces before coating, Part 1: Rust grade and treatment grade of uncoated steel surfaces and steel surfaces after complete removal of original coatings" specifies a visual assessment method for assessing the rust grade and treatment grade of uncoated steel surfaces and steel surfaces after complete removal of original coatings. This standard applies to all types of steel and is important in industrial and commercial applications where surface cleanliness needs to be ensured before coating is applied. The standard covers the inspection of steel surfaces to ensure that coatings can adhere effectively and provide long-term corrosion protection.