GB/T 28699-2012 General requirements for protective coating of steel structure
1 Scope
This standard specifies the technical requirements of coating system, inspection methods, test and acceptance rules and typical coating systems for steel structures protection coating, as well as the requirements for safety, sanitation and environmental protection of coating operations.
This standard is applicable to the protective coating of steel structures and steel structure accessories.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 1730 Paints and varnishes - Pendulum damping test
GB/T 1732 Determination of impact resistance of coating films
GB/T 1740 Determination of resistance to heat and humidity of paint films
GB/T 1766 Paints and varnishes - Rating schemes of degradation of coats
GB/T 1768 Method of test for abrasion resistance of paint films
GB/T 1771 Paints and varnishes - Determination of resistance to neutral salt spray (fog)
GB/T 4956 Non-magnetic coatings on magnetic substrates - Measurement of coating thickness -Magnetic method
GB/T 5210 Paints and varnishes - Pull-off test for adhesion
GB 6514-2008 Safety code for painting - Safety, ventilation and air clean-up for painting process
GB/T 6742 Paints and varnishes - Bend test (cylindrical mandrel)
GB 7692-1999 Safety code for painting - Safety, ventilation and air clean-up for pretreatment process of painting
GB/T 8264 Glossary of painting terms
GB/T 8923-1988 Rust grades and preparation grades of steel surfaces before application of paints and related products
GB/T 9271 Paints and varnishes - Standard panels for testing
GB/T 9274 Paints and varnishes - Determination of resistance to liquids
GB/T 9286 Paints and varnishes-cross cut test for films
GB/T 9753 Paints and varnishes - Cupping test
GB/T 9793 Thermal spraying - Metallic and other inorganic coatings - Zinc, aluminium and their alloys
GB 11375-1999 Metallic and other inorganic coatings - Thermal spraying - Safe practices
GB/T 12608 Thermal spraying - Wires, rods and cords for flame and arc spraying - Classification and technical supply condition
GB/T 13288.2 Preparation of steel substrates before application of paints and related products - Surface roughness characteristics of blast-cleaned steel substrates - Part 2:Method for the grading of surface profile of abrasive blast-cleaned steel - Comparator procedure
GB/T 13452.2-2008 Paints and varnishes - Determination of film thickness
GB/T 14522 Artificial weathering test method for plastics, coating and rubber materials used for machinery industrial products - Fluorescent UV lamps
GB/T 17850.1 Preparation of steel substrates before application of paints and related products - Specifications for non-metallic blast-cleaning abrasives - General introduction and classification
GB/T 18570.3 Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part3:Assessment of dust on steel surface prepared for painting(pressure-sensitive tape method)
GB/T 18570.6 Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 6: Extraction of soluble contaminants for analysis - The Bresle method
GB/T 18570.9 Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 8: Field method for the conductometric determination of water-soluble salts
GB/T 18593 Anti-corrosive painting of fusion bonded epoxy coating powders
GB/T 18838.1 Preparation of steel substrates before application of paints and related products - Specifications for metallic blast-cleaning abrasives - General introduction and classification
GB/T 18839.2 Preparation of steel substrates before application of paints and related products - Surface preparation methods - Abrasive blast-cleaning
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 8264 and the following apply.
3.1
coating system
multi-layer coating composed of metallic coating or paint coating with protective and decorative functions
3.2
deformation adhesion test
cupping test carried out in the cross-cut area after the coating is cross-cut
3.3
cycle corrosion test
a cycle of cycle exposure test carried out in a certain sequence under the environmental conditions of ultraviolet (UV) / condensate (CON) / salt spray (NSS) / drying
3.4
inside anti-corrosion coatings
multilayer coating used in areas not exposed to ultraviolet rays
3.5
outside anti-corrosion coatings
multi-layer coatings used in ultraviolet irradiated areas
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Coating system selection
5 Technical requirements for protective coating
6 Inspection method
7 Testing rules
8 Basic requirements for safety, sanitation and environmental protection in painting construction
9 Specifications for handover acceptance documents
Annex A (Informative) Typical anti-corrosion coatings of steel structures
Annex B (Informative) Technical requirements and test methods for thermally sprayed anti-corrosion coatings of steel structures
Annex C (Informative) Technical requirements and test methods for shop primers of steel structures
Annex D (Informative) Technical requirements and test methods for anti-rust primers of steel structures
Annex E (Informative) Technical requirements and test methods for seal coat and intermediate coat for anti-corrosion coatings of steel structures
Annex F (Informative) Technical requirements and test methods for weather-resistant topcoats of steel structures
Annex G (Informative) Technical requirements and test methods for protective paints for steel structures in water and soil environments
Annex H (Informative) Technical requirements and test methods for functional paints for steel structures
Bibliography
Table 1 Types of atmospheric corrosion and examples of typical environments
Table 2 Classification of corrosive environments of water and soil
Table 3 Cycle of cycle corrosion test
Table A.1 (General type) inside protective coating supporting system of steel structures in atmospheric corrosive environment
Table A.2 Supporting system for inside protective (long-lasing) coating of steel structures in atmospheric corrosive environment
Table A.3 Supporting system for outside protective (general type) coating of steel structure in atmospheric corrosive environment
Table A.4 Supporting system for outside protective (long-lasting) coating of steel structure in atmospheric corrosive environment
Table A.5 Supporting system for (general) anti-corrosion coatings in water and soil environments
Table A.6 Supporting system for (long-lasting) anti-corrosion coatings in water and soil environments
Table A.7 Supporting system for (long-lasting) anti-corrosion coatings of thermally sprayed metallic coatings of steel structures
Table A.8 Supporting system for fire retardant coatings of steel structures
Table A.9 Supporting system for anti-corrosion coatings against high temperature (below 200°C) and liquid corrosive medium for steel structures
Table A.10 Supporting system for anti-corrosion coatings against high temperature (200°C~600°C) for steel structures under atmospheric corrosive environments below C4
Table A.11 Inside anti-corrosion coatings in renovation coating of steel structure
Table B.1 Recommended minimum coating thicknesses for different use environments
Table B.2 Technical requirements for laboratory testing of thermally sprayed coatings
Table C.1 Technical requirements for shop primers of steel structures
Table D.1 Technical requirements for anti-rust primers of steel structures
Table E.1 Technical requirements for sealing and intermediate coatings for anti-corrosion coatings of steel structures
Table F.1 Technical requirements for weather-resistant topcoats of steel structures
Table G.1 Technical requirements for protective paints for steel structures in water and soil environments
Table H.1 Technical requirements for functional paints for steel structures
Bibliography
