Construction and acceptance of water-based anti-co

2022-09-22
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Standard for construction and acceptance of water-based anti-corrosion coatings for industrial building steel structures! And ventilation should be better

construction and acceptance standards of water-based anti-corrosion coatings for industrial building steel structures

January 20, 2021

Introduction

in order to protect steel structures from corrosion, there are many different methods in early August this year. It is a kind of successful and effective steel structure protection measure to adopt the coating formed by the appropriate coating system. The traditional protection of steel structure is to use solvent based coating. Although the jjg139-1999 verification regulation requires that the allowable error of its indication is usually no more than ± 1%, but it has excellent performance, its VOC is high, which seriously pollutes the environmental coating. Water based coatings have been widely used in the protection of steel structures because of their good environmental protection, low VOC, good corrosion resistance, conventional painting and transportation safety. The formulation of the construction and acceptance standards of water-based anti-corrosion coatings on steel structures provides a technical basis for standardizing the construction and acceptance

the standard has a wide range of application. It can be used for the construction and acceptance of water-based anti-corrosion coatings for buildings and structures of steel structures in construction, chemical industry, petroleum, drilling platform, transportation, metallurgy, national defense and other industries. The quality of raw materials is one of the decisive factors for the quality of the project. There are many manufacturers of water-based anti-corrosion coatings for building steel structures. Each manufacturer of the same kind of products has many commodity brands, and its performance is also different. Due to the continuous emergence of new products and materials, the supplier should provide product quality certificates, quality technical indicators, testing methods and quality inspection reports based on the principle of who produces who provides certificates of conformity and who is responsible for the authenticity. For new products developed, product technical identification documents should be provided. With the development of science and technology, the application of new water-based coatings is increasing. In order to ensure the application of new materials and truly reflect today's scientific and technological achievements, it can be adopted with the consent of the design department on the premise of obtaining reliable data through experiments or practical proof

standard preparation

protective coating system

(1) atmospheric corrosion grade and typical environment shall be classified according to table 1

(2) the durability range of the protective coating system of water-based anti-corrosion coatings for industrial building steel structures should comply with the provisions of Table 2

(3) the performance requirements of the protective coating system of water-based anticorrosive coatings for industrial building steel structures should comply with the current industry standard "water based anticorrosive coatings for steel structures" hg/t5176-2017 and table 3

engineering acceptance standard

the acceptance of the construction quality of water-based anti-corrosion coatings for industrial building steel structures should be carried out on the basis of the self inspection of the construction unit. After completing the construction project of water-based anti-corrosion coating according to the scope specified in the contract, the construction unit shall handle the handover procedures of handover acceptance in time. The project shall not be put into production without acceptance and handover. The following materials shall be submitted during the quality acceptance of coating engineering: (1) design documents and design change documents; (2) Paint factory certificate and mobilization acceptance record; (3) Inspection records of steel structure surface treatment; (4) Coating construction records; (5) Handling records of major technical problems; (6) Repair and rework records; (7) Other relevant records related to coating quality

conclusion

this standard and the current national standards "paint and varnish protective coating system for corrosion protection of steel structures" gb/t30790.1 ~ 8-2014, water-based anticorrosive coatings for steel structures hg/t5176-2017, code for construction of building corrosion protection engineering gb50212-2014, code for acceptance of construction quality of building corrosion protection engineering gb50224-2010, code for acceptance of construction quality of steel structures gb50205-2017 The unified standard for construction quality acceptance of building engineering gb50300-2013 and the technical code for corrosion protection of steel structures of buildings jgj/t251-2011 are used together and in coordination. When it is used in conjunction with the current national standards and specifications related to construction safety, environmental protection and quality, such as production specifications and public interests, the construction and acceptance of water-based anti-corrosion coatings for industrial building steel structures shall comply with the provisions of this standard and the current national standards and specifications. It is hoped that with the implementation of the standard, all construction units can pay attention to quality control, quality inspection and construction quality of steel structures from surface treatment to the construction of waterborne anti-corrosion coatings according to the design requirements, so as to ensure the use effect of the project and promote the overall development of the industry

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