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GB/T 33637-2025Cathodic protection - MMO/Ti flexible anode (English PDF)

阴极保护　MMO/Ti柔性阳极

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

May 1, 2026

Scope

GB/T 33637-2025 is the English-translated version of 阴极保护　MMO/Ti柔性阳极.

GB/T 33637-2025 is the Chinese standard "Cathodic protection - MMO/Ti flexible anode". Its scope clause reads: This document specifies the structure, model, technical requirements, and inspection procedures for cathodic protection MMO/Ti flexible anodes (hereinafter referred to as "the Product").

Acceptance and marking, packaging, storage and transportation, and use of the product. This document applies to the design, manufacture, and use of MMO/Ti flexible anodes in cathodic protection systems for soil environments. Its clauses include terms, definitions and abbreviations.

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Document preview — GB/T 33637-2025

National Standard of the People's Republic of China

ICS: 25.220.99
Classification: A 29
Replacing: GB/T 33637-2017

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

Preface
1.Scope
2 Normative References
3.Terms, Definitions, and Abbreviations
4.Product structure and model
5 Technical Requirements
6.Inspection and Acceptance 7.
7.Marking, Packaging, Storage and Transportation 8.
8.Product Use 9.
Appendix A (Normative) Bending Radius Test Method
Appendix B (Normative) Test Method for Coverage Density of Abrasion-Resistant Woven Mesh
Appendix C (Normative) Test Methods for Anode Performance
Appendix D (Normative) Construction Drawing Design for Site Area Protection
Appendix E (Informative) Construction Drawing Design for Apron Pipeline Network Protection
Appendix F (Informative) Construction Drawing Design for Tank Bottom Plate Protection
References

1 Scope

This document specifies the structure, model, technical requirements, and inspection procedures for cathodic protection MMO/Ti flexible anodes (hereinafter referred to as "the Product").

Acceptance and marking, packaging, storage and transportation, and use of the product.

This document applies to the design, manufacture, and use of MMO/Ti flexible anodes in cathodic protection systems for soil environments.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below.

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 1804-2000 General tolerances - Tolerances for linear and angular dimensions without specified tolerances

GB/T 2001 Analytical Determination Methods for Coke Industry

GB/T 3620.1-2016 Grades and Chemical Compositions of Titanium and Titanium Alloys

GB/T 3623 Titanium and Titanium Alloy Wire

GB/T 4208-2017 Degrees of protection provided by enclosures (IP code)

GB/T 8170 Rules for rounding off numerical values and the representation and determination of limiting values

GB/T 9174 General Technical Requirements for Transport Packaging of General Cargo

GB/T 12706.1 Extruded insulated power cables and accessories with rated voltages from 1kV (Um=1.2kV) to 35kV (Um=40.5kV)

Part 1.Cables with rated voltages of 1kV (Um=1.2kV) and 3kV (Um=3.6kV)

GB/T 15078 Method for measuring contact resistance of precious metal electrical contact materials

GB/T 16921 Metallic Coatings - X-ray Spectroscopy for Coating Thickness Measurement

GB/T 19976 Determination of bursting strength of textiles - Steel ball method

GB/T 19978 Determination of puncture strength of geotextiles and related products

GB/T 21196.2 Textiles - Martindale Method - Determination of Abrasion Resistance of Fabrics - Part 2.Determination of Specimen Breakage

GB/T 24521 Method for Determination of Resistivity of Carbon Raw Materials and Coke

GB/T 34016 General Rules for Rodent-Proof and Ant-Proof Wires and Cables

GB/T 41493.2 Accelerated life test method for mixed metal oxide anodes for cathodic protection - Part 2.Application in soil and

In natural water environments

GB/T 51253 Standard for Termite Damage Assessment in Construction Projects

FZ/T 54064 Polyester Monofilament

YS/T 587.12 Determination of particle size distribution of calcined petroleum coke for carbon anodes - Part 12

3 Terms, Definitions and Abbreviations

3.1 Terms and Definitions

The following terms and definitions apply to this document.

GB/T 37309 | GB/T 35505 | GB/T 31554 | GB/T 19824 | GB/T 11372 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 25 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 33637

Edition	Title	Revision	Status
GB/T 33637-2025	Cathodic protection - MMO/Ti flexible anode	current edition	Current
GB/T 33637-2017	Cathodic protection -- MMO/Ti flexible anode	previous edition	In force

This page sells the current edition, GB/T 33637-2025. Earlier editions are listed for reference only.

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