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GB/T 39636-2020Specification of fusion-bonded epoxy external coatings for steel pipeline (English PDF)

钢制管道熔结环氧粉末外涂层技术规范

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 14, 2020

Implementation date

July 1, 2021

Scope

GB/T 39636-2020 is the English-translated version of 钢制管道熔结环氧粉末外涂层技术规范.

GB/T 39636-2020 is the Chinese standard "Specification of fusion-bonded epoxy external coatings for steel pipeline".

Its scope clause reads: This document specifies the technical requirements for fusion-bonded epoxy powder coatings for steel pipelines: This document is applicable to the design, production, construction and inspection of single-layer and double-layer structure fusion bonded epoxy powder outer coatings for steel pipelines, and is suitable for operation Fused epoxy powder outer coating for buried or underwater steel pipes with a temperature of -30°C~80°C:. Its clauses include terms and definitions.

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Document preview — GB/T 39636-2020

National Standard of the People's Republic of China

ICS: 75.200
Classification: E 98

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Fused epoxy powder outer coating structure
5 Materials and inspection
6 Coating construction and quality inspection
7 Repair and recoat of coating
8 Marking, storage and shipment of finished pipes
9 On-site repair and quality inspection
10 Ditch backfilling of buried pipelines
11 Delivery documents
Appendix A (normative) Test method for curing time of epoxy powder
Appendix B (Normative) Test method for thermal characteristics of epoxy powder and its coating
Appendix C (Normative) Test method for moisture content of epoxy powder
Appendix D (normative) Test method for gel time of epoxy powder
Appendix E (Normative) Density test method of epoxy powder
Appendix F (Normative) Coating Impact Test Method
Appendix G (normative) Test method for porosity of coating
Appendix H (Normative) Coating adhesion test method
Appendix I (Normative) Test method for cathodic peel resistance of coating after bending
Appendix J (Normative) Test method for contamination rate of interfacial impurities of coating

1 Scope

This document specifies the technical requirements for fusion-bonded epoxy powder coatings for steel pipelines:

This document is applicable to the design, production, construction and inspection of single-layer and double-layer structure fusion bonded epoxy powder outer coatings for steel pipelines, and is suitable for operation

Fused epoxy powder outer coating for buried or underwater steel pipes with a temperature of -30°C~80°C:

2 Normative references

The contents of the following documents constitute indispensable clauses of this document through normative references in the text: Among them, dated quotations

Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document:

GB/T 1408:1 Insulating material electric strength test method Part 1: Test under power frequency

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

GB/T 8923:1 Visual assessment of surface cleanliness of steel surface treatment before coating-Part 1: Uncoated steel

The corrosion grade and treatment grade of the surface and the steel surface after the original coating has been completely removed

GB/T 13288:5 Steel surface treatment before coating: Surface roughness characteristics of steel after blast cleaning: Part 5: Surface

Method for measuring roughness copy tape method

GB/T 18570:3 Evaluation test of surface cleanliness of steel surface treatment before coating: Part 3: Steel before coating

Surface dust evaluation (pressure sensitive adhesive tape method)

GB/T 18570:9 Evaluation test of surface cleanliness of steel surface treatment before coating: Part 9: Site of water-soluble salt

Conductivity measurement

GB/T 21782:1 Powder coatings Part 1: Determination of particle size distribution by sieving method

GB/T 31838:2 Dielectric and electrical characteristics of solid insulating materials Part 2: Resistance characteristics (DC method) Volume resistance and volume

Product resistivity

GB 50369 Code for construction and acceptance of long-distance oil and gas pipeline engineering

GB/T 51241 Technical Specification for Pipeline External Anticorrosion Patching

JB/T 6570 Ordinary abrasive magnetic content determination method

SY/T 0063 Leak detection test method for pipeline coating

SY/T 4113:1 Pipeline anti-corrosion coating performance test method Part 1: Scratch resistance test

SY/T 4113:3 Pipeline anticorrosive coating performance test method Part 3: Cathodic stripping test

SY/T 4113:5 Pipeline anticorrosive coating performance test method Part 5: Bend resistance test

SY/T 4113:7 Pipeline anticorrosive coating performance test method Part 7: Thickness test

SY/T 4113:9 Pipeline anticorrosion coating performance test method Part 9: Resistance to liquid medium immersion

3 Terms and definitions

The following terms and definitions apply to this document:

GB/T 23258 | GB/T 21447 | GB 50341 | GB/T 35186 | GB/T 21446 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 61 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 1408 · GB/T 18570 · GB/T 21782 · GB/T 31838

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