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GB/T 31817-2025Specification for protective coating of wind power equipment against corrosion (English PDF)

风力发电设施防护涂装技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 2, 2025

Implementation date

July 1, 2026

Scope

GB/T 31817-2025 is the English-translated version of 风力发电设施防护涂装技术规范.

GB/T 31817-2025 is the Chinese standard "Specification for protective coating of wind power equipment against corrosion".

Its scope clause reads: This document specifies the classification, requirements, inspection rules, and acceptance procedures for protective coatings used on onshore and offshore wind power facilities, and describes the corresponding...

Experimental methods. This document applies to the initial and maintenance coating of protective coatings for onshore and offshore wind power facilities. This document does not apply to the initial coating and maintenance coating of concrete substrates and fireproof parts of wind power generation facilities.

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Document preview — GB/T 31817-2025

National Standard of the People's Republic of China

ICS: 87.020
Classification: G 51
Replacing: GB/T 31817-2015

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1.Scope
2 Normative References
3 Terms and Definitions
4.Classification 3.
4.1 Classification of Painting Areas
4.2 Classification of Corrosive Environments
4.3 Coating Classification
5 Requirements
5.1 Coating System
5.2 Coating Process
6.Test Methods
6.1 Coating Materials
6.2 Coating System
6.3 Surface Treatment
6.4 Coating Site
7.Inspection Rule
7.1 Sampling
7.2 Inspection Item
7.3 Judgment Principle
8.Acceptance
Appendix A (Normative) Performance Requirements and Test Methods for Blade Coating Materials
Appendix B (Normative) Performance Requirements and Test Methods for Coatings on Parts Other Than Blades

1 Scope

This document specifies the classification, requirements, inspection rules, and acceptance procedures for protective coatings used on onshore and offshore wind power facilities, and describes the corresponding...

Experimental methods.

This document applies to the initial and maintenance coating of protective coatings for onshore and offshore wind power facilities.

This document does not apply to the initial coating and maintenance coating of concrete substrates and fireproof parts of wind power generation facilities.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 1040.1 Determination of tensile properties of plastics - Part 1.General principles

GB/T 1040.3 Determination of tensile properties of plastics - Part 3.Test conditions for films and sheets

GB/T 1724-2019 Determination of grinding fineness of paints, varnishes and printing inks

GB/T 1725 Determination of nonvolatile matter content in paints, varnishes and plastics

GB/T 1727-2021 General methods for preparing paint films

GB/T 1728 Determination of drying time of paint film and putty film

GB/T 1732 Test method for impact resistance of paint film

GB/T 1741 Test method for resistance to mildew in paint films

GB/T 1766 Rating Method for Aging of Paint and Varnish Coatings

GB/T 1768 Determination of abrasion resistance of paints and varnishes - Rotating rubber grinding wheel method

GB/T 1865 Paints and varnishes - Artificial weathering and artificial radiation exposure - Filtered xenon arc radiation

GB/T 3186 Sampling of raw materials for paints, varnishes and paints and varnishes

GB/T 5206 Paints and Varnishes. Terms and Definitions

GB/T 5210 Paints and varnishes - Pull-off adhesion test

GB 6514 Safety Regulations for Painting Operations. Safety of Painting Processes and Ventilation

GB/T 6682 Specifications and test methods for water used in analytical laboratories

GB/T 6742 Paints and varnishes - Bending test (cylindrical shaft)

GB/T 6750 Determination of density of paints and varnishes - Specific gravity bottle method

GB/T 6823 Ballast Tank Paint

GB 7691 Safety Regulations for Painting Operations - General Rules for Safety Management

GB/T 7790 Determination of resistance to cathodic disbondment of coatings of paints and varnishes exposed to seawater

GB/T 8923.1 Visual assessment of surface cleanliness of steel before coating - Part 1.Uncoated steel

Rust level and treatment level of the surface and the steel surface after complete removal of the original coating.

GB/T 8923.3 Visual assessment of surface cleanliness of steel surfaces before coating - Part 3.Welds, edges and others

Treatment level of surface defects in the area

GB/T 9258.1 Abrasive grain size analysis for coated abrasives - Part 1.Grain size composition

GB 30981.1 | GB 30981.2 | GB 38468 | GB/T 31820 | GB/T 31815 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 34 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 31817

Edition	Title	Revision	Status
GB/T 31817-2025	Specification for protective coating of wind power equipment against corrosion	current edition	Current
GB/T 31817-2015	Specification for protective coating of wind power equipment against corrosion	previous edition	Superseded

This page sells the current edition, GB/T 31817-2025. Earlier editions are listed for reference only.

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