GB/T 30790.1-2014
Paints and varnishes.Corrosion protection of steel structures by protective paint systems.Part 1:General introduction (English Version)

Standard No.

GB/T 30790.1-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 30790.1-2014

Scope

1.1 GB/T 30790 discusses the anti-corrosion protection of steel structures by using protective coating systems. 1.2 GB/T 30790 only involves the anti-corrosion protection function of the coating system, and other protection functions are not included in the content of GB/T 30790, for example: -- Microorganisms (marine dirt, bacteria, fungi, etc.); -- Chemicals (acids, alkalis, organic solvents, gases, etc.); -- mechanical action (abrasion, etc.); -- fire. 1.3 The characteristics of the application field include the following: - type of structure; - type of surface and surface treatment; - type of environment; - type of protective coating system; - type of work; - durability of protective coating system. Although GB/T 30790 does not cover all types of structures, surfaces and surface treatments, it can also be applied to areas not covered by negotiation. 1.3.1~1.3.6 describe the content of each application field in more detail. 1.3.1 Type of structure GB/T 30790 applies to structures made of carbon steel or low alloy steel (for example, in accordance with EN 10025-2) with a thickness not less than 3 mm, and the design of these structures is subject to approved strength calculations . Reinforced concrete structures are not within the scope of GB/T 30790. 1.3.2 Surface type and surface treatment GB/T 30790 discusses the following types of carbon steel or low alloy steel surface and its surface treatment: --- uncoated surface; --- thermal sprayed zinc, aluminum or their alloy surface; --Hot-dip galvanized surface; --Electric galvanized surface; --Powder galvanized surface; --Coated pre-primed surface; --Other painted surface. 1.3.3 Environmental types The environmental types discussed in GB/T 30790 are as follows: -- Atmospheric environment is divided into six types of corrosive grades; -- Steel structures immersed in water or buried in soil are divided into three grades. 1.3.4 Types of protective coating systems GB/T 30790 discusses a series of coating products that dry or cure under ambient conditions, but does not include: - powder coatings; - baking

GB/T 30790.1-2014 Referenced Document

• EN 10025-2 Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels
• ISO 4628-1 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 1: General introduction and designation system*， 2016-01-01 Update
• ISO 4628-2 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 2: Assessment of degree of blistering*， 2016-01-01 Update
• 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 4628-4 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 4: Assessment of degree of cracking*， 2016-01-01 Update
• ISO 4628-5 Paints and varnishes — Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 5: Assessment of degree of flaking*， 2022-11-11 Update

GB/T 30790.1-2014 history

• 2014 GB/T 30790.1-2014 Paints and varnishes.Corrosion protection of steel structures by protective paint systems.Part 1:General introduction

GB/T 30790.1-2014 -All Parts