GB/T 31586.1-2015Corrosion protection of steel structures by protective paint systems -- Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating -- Part 1: Pull-off testing (English PDF)

Foreword

GB/T 31586 Corrosion protection of steel structures by protective paint systems

- Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture

strength) of a coating consists of the following two parts.

- Part 1. Pull-off testing;

- Part 2. Cross-cut testing and X-cut testing.

This Part is the first part of GB/T 31586.

This Part was drafted in accordance with the rules given in GB/T 1.1-2009.

This Part uses translation method and identically adopts ISO 16276-1.2007

Corrosion protection of steel structures by protective paint systems -

Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture

strength) of a coating - Part 1. Pull-off testing.

The Chinese documents which have consistency with the international

normative reference in this Part are as follows.

- GB/T 5210-2006 Paints and varnishes - Pull-off test for adhesion (ISO

4624.2002, IDT)

- GB/T 30790.7-2014 Paints and varnishes - Corrosion protection of steel

structures by protective paint systems - Part 7. Execution and supervision

of paint work (ISO 12944-7.1998, MOD)

- GB/T 30790.8-2014 Paints and varnishes - Corrosion protection of steel

structures by protective paint systems - Part 8. Development of

specification for new work and maintenance (ISO 12944-8.1998, MOD)

This Part was proposed by China Petroleum and Chemical Industry Federation.

This Part shall be under the jurisdiction of National Technical Committee on

Paints and Pigments of Standardization Administration of China (SAC/TC 5).

The drafting organizations of this Part. CNOOC Changzhou Paint and

Chemicals Research Institute Co., Ltd., Nanjing Product Quality Supervision

and Inspection Institute, Guangzhou Synthetic Material Research Institute Co.,

Ltd., AVIC Bermuda New Material Technology Engineering Co., Ltd., Zhejiang

Yutong New Material Co., Ltd., Zhejiang Tianyu Group Paint Co., Ltd., Shanghai

Jinlitai Chemical Industry Co., Ltd., Dongguan Daxing Chemical Co., Ltd..

Main drafters of this Part. Peng Jufang, Liang Zhi, Li Xin, Ji Junhong, Yang

Zhenbo, Liang Xinfang, Yao Shengming, Hang Lailai, Yang Jiedan.

Corrosion protection of steel structures by protective

paint systems - Assessment of, and acceptance

criteria for, the adhesion / cohesion (fracture strength)

of a coating - Part 1. Pull-off testing

1 Scope

This Part of GB/T 31586 specifies procedures for assessing the fracture

strength of a protective paint coating of any thickness on a steel substrate of

thickness not less than 10 mm. The procedures given in this Part of GB/T 31586

are based on methods used with different types of pull-off test equipment. The

results obtained using such different types of equipment are not comparable.

NOTE 1 Substrates of less than 10 mm in thickness can be tested if they are

strengthened by the sandwich technique (see ISO 4624) or by the nature of the structure

(e.g. I-beam or backing-plate). Otherwise, test panels with a thickness of at least 10 mm

coated in the same way as the structure can be used, or the method specified GB/T

2 Normative references

The following referenced documents are indispensable for the application of

this document. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any

amendments) applies.

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