Introduction of national standards
BS EN ISO 4628-7:2003 pdf free.Paints and varnishes- Evaluation of degradation of coatings一Designation of quantity and size of defects, and of intensity of uniform changes in appearance一 Part 7: Assessment of degree of chalking by velvet method. This part of ISO 4628 describes a method suitable, in particular, for rating the degree of chalking on white or coloured exterior coatings […]
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BS EN ISO 4628-4:2003 pdf free.Paints and varnishes – Evaluation of degradation of coatings一Designation of quantity and size of defects, and of intensity of uniform changes in appearance- Part 4: Assessment of degree of cracking. This part of ISO 4628 describes a method for assessing the degree of cracking of coatings by comparison with pictorial standards, using the designation system […]
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BS EN ISO 4628-3-2003 pdf free.Paints and varnishes一 Evaluation of degradation of coatings一Designation of quantity and size of defects, and of intensity of uniform changes in appearance一 Part 3: Assessment of degree of rusting. This part of ISO 4628 describes a method for assessing the degree of rusting of coatings by comparison with pictorial standards. The pictorial standards provided in […]
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