"GB/T 18570.3-2005 Test for assessment of surface cleanliness of steel surface preparation before coating Coating, Part 3: Assessment of dust on the surface of steel before coating Coating (pressure-sensitive adhesive tape method) " stipulates the method for assessing dust on the surface of steel before coating using pressure-sensitive adhesive tape method. This method is suitable for the assessment of residual dust on the surface of steel after cleaning. By sticking pressure-sensitive adhesive tape and observing the number and size of dust particles adhered to it, it is determined whether the surface cleanliness meets the requirements. Standard equivalence adopts ISO 8502-3:1992, proposed by the Chinese shipbuilding industry group company, the national Coating and pigment standardization technical committee, released on September 14, 2005, and implemented on April 1, 2006.