DIN EN ISO 8501-4:2007
Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 4: Initial surface conditions, preparation grades and flash rust grades in connection with high-pressure water jetting (ISO
- Standard No.
- DIN EN ISO 8501-4:2007
- Release Date
- 2007
- Published By
- German Institute for Standardization
- Status
- Replace By
- DIN EN ISO 8501-4 E:2019
- Latest
- DIN EN ISO 8501-4 E:2019
- DIN EN ISO 8501-4:2019
- DIN EN ISO 8501-4:2021-02
- Scope
- This part of ISO 8501 specifies a series of preparation grades for steel surfaces after removal/partial removal of water-soluble contaminants, rust, previous paint coatings and foreign matter by high-pressure water jetting. The various grades are defined by written descriptions together with photographs that are representative examples within the tolerances for each grade as described in words. In addition, this part of ISO 8501 specifies both initial surface conditions and after-cleaning flash rust grades, also defined by written descriptions together with representative photographic examples. NOTE 1 Examples of foreign matter are salt, grime, dirt, mill scale, oil, grease and marine growth, e.g. algae. This part of ISO 8501 relates the cleanliness of the surface to its visual appearance. In many instances, this is sufficient for the purpose but, for coatings likely to be exposed to severe environments, such as water immersion and continuous condensation conditions, consideration should be given to testing for soluble salts and other invisible contaminants on the visually clean surface by the physical and chemical methods which form the subjects of the various parts of ISO 8502. The roughness characteristics of the surface should also be considered by reference to ISO 8503, although it must be noted that preparation by high-pressure water jetting does not create a profile or significantly change an existing profile. NOTE 2 Water pressure, water volume, nozzle design, stand-off distance and traverse rate are factors which will affect the efficiency of removal of contaminants such as water-soluble matter, rust and paint coatings. The removal efficiency also depends on whether detergents are being used in the cleaning process. If so, rinsing afterwards with clean water is necessary.
DIN EN ISO 8501-4:2007 Referenced Document
- ISO 4628-3 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 3: Assessment of degree of rusting*， 2015-12-31 Update
- ISO 8501-1 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*， 2007-05-01 Update
DIN EN ISO 8501-4:2007 history
- 2021 DIN EN ISO 8501-4:2021 Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 4: Initial surface conditions, preparation grades and flash rust grades in connection with water jetting (ISO 8501-4:2020);
- 1970 DIN EN ISO 8501-4 E:2019-06 Preparation of steel substrates prior to application of paints and related products Visual assessment of surface cleanliness Part 4: Initial surface conditions, preparation levels and flash rust levels relevant to the water flush method (draft)
- 2019 DIN EN ISO 8501-4 E:2019 Draft Document - Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 4: Initial surface conditions, preparation grades and flash rust grades in connection with water jettin...
- 2007 DIN EN ISO 8501-4:2007 Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 4: Initial surface conditions, preparation grades and flash rust grades in connection with high-pressure water jetting (ISO
