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GB 20265-2019

Chinese Standard: 'GB 20265-2019'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
GB 20265-2019English459 Add to Cart Days<=5 Foot protection -- Footwear protecting against chemicals Valid GB 20265-2019
GB 20265-2019Chinese25 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]  

   

BASIC DATA
Standard ID GB 20265-2019 (GB20265-2019)
Description (Translated English) Foot protection--Footwear protecting against chemicals
Sector / Industry National Standard
Classification of Chinese Standard C73
Classification of International Standard 13.340.50
Word Count Estimation 25,297
Date of Issue 2019-12-31
Date of Implementation 2020-07-01
Older Standard (superseded by this standard) GB 20265-2006; GB 20266-2006
Drafting Organization Sinosteel Wuhan Safety and Environmental Protection Research Institute Co., Ltd., Tianjin Shuangan Labor Insurance Rubber Co., Ltd., Dongguan Xinhuwei Industrial Co., Ltd.
Administrative Organization Ministry of Emergency Management of the People's Republic of China
Regulation (derived from) National Standards Bulletin No. 17 of 2019
Proposing organization Ministry of Emergency Management of the People's Republic of China
Issuing agency(ies) State Administration of Market Supervision and Administration, National Standardization Administration

GB 20265-2019
Foot protection--Footwear protecting against chemicals
ICS 13.340.50
C73
National Standards of People's Republic of China
Replaces GB 20265-2006, GB 20266-2006
Foot protection chemical resistant shoes
2019-12-31 release
2020-07-01 implementation
State Administration of Market Supervision
Published by the National Standardization Administration
Contents
Foreword III
1 range 1
2 Normative references 1
3 Terms and definitions 1
4 Classification and grading 2
5 Technical requirements 2
5.1 General 2
5.2 Shoe 4
5.3 Upper 7
5.4 Lining 8
5.5 Tongue 9
5.6 Insoles and insoles 9
5.7 Outsole 10
5.8 Chemical resistance 11
6 Test method 12
6.1 Sampling and conditioning 12
6.2 Upper height 13
6.3 Upper/outsole and midsole bonding strength 13
6.4 Water resistance 13
6.5 Leakproofness 13
6.6 Non-slip properties 13
6.7 Ergonomic requirements 14
6.8 Upper thickness 14
6.9 Upper, liner and tongue tearing performance 14
6.10 Upper tensile properties 14
6.11 Upper endurance 14
6.12 pH 14
6.13 Hexavalent chromium content 14
6.14 Water permeability and water absorption 14
6.15 Abrasion resistance of linings and insoles 14
6.16 Insole and insole thickness 14
6.17 Water Absorption and Hydrolytic Absorption 14
6.18 Insole abrasion resistance 14
6.19 Outsole thickness 14
6.20 Tear Strength of Outsole 15
6.21 Abrasion resistance of outsole 15
6.22 Fold Resistance of Outsole 16
6.23 Chemical resistance 16
7 Identification 16
8 Information provided by the manufacturer 16
8.1 General requirements 16
8.2 Instruction manual and related information 16
8.3 Chemical resistance 17
8.4 Insoles 17
Appendix A (Normative) Degradation Test 18
References 21
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 20265-2006 "Chemical Resistant Industrial Plastic Molded Boots" and GB 20266-2006 "Chemical Resistant
Rubber boots for the industry. Compared with GB 20265-2006 and GB 20266-2006, except for editorial changes, the main technical content changes
as follows.
--- Added some terms and definitions (see Chapter 3);
--- Increased classification and grading (see Chapter 4);
--- Added technical requirements and related content for Class I products (see Chapter 5);
--- Revised the chemical resistance requirements and test methods (see 5.8 and 6.23, GB 20265-2006 3.8, GB 20266-
(3.7 of.2006);
--- Modified the content of the logo (see Chapter 7, GB 20265-2006 Chapter 5, GB 20266-2006 Chapter 5);
--- Added "Information provided by the manufacturer" (see Chapter 8).
This standard is proposed and managed by the Ministry of Emergency Management of the People's Republic of China.
This standard was drafted. Sinosteel Wuhan Safety and Environmental Protection Research Institute Co., Ltd., Tianjin Shuangan Labor Insurance Rubber Co., Ltd., Dongguan Xin
Huwei Industrial Co., Ltd.
The main drafters of this standard. Cheng Jun, Chen Tie, Liu Tianyi, Yu Jingjing, Zhang Wenfu, Zhou Zichao.
The previous versions of the standards replaced by this standard are.
--- GB 20265-2006;
--- GB 20266-2006.
Foot protection chemical resistant shoes
1 Scope
This standard specifies the terms and definitions, classification and grading, technical requirements, test methods, identification and
information.
This standard applies to footwear that protects the wearer's feet from chemicals during operation.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 2411 Plastic and hard rubber hardness tester for indentation hardness (Shore hardness)
GB/T 2941-2006 General test procedure for the preparation and adjustment of rubber physical test methods
GB/T 20991-2007 Test methods for personal protective equipment shoes
GB/T 22807 Determination of hexavalent chromium in chemical tests on leather and fur
GB/T 23462-2009 Test method for chemical substance penetration of protective clothing
GB/T 28287 Test method for slip resistance of foot protection shoes
HG/T 2581.1-2009 Determination of tear resistance of rubber or plastic coated fabrics. Part 1. Constant speed tearing method
QB/T 2711 Determination of tear force in physical and mechanical tests of leather. bilateral tear
QB/T 2724 Determination of pH in leather chemical test
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Degradation
Harmful changes in one or more properties of shoe materials due to contact with chemicals.These changes may include. peeling, swelling, breakage
Cracking, embrittlement, discoloration, deformation, appearance change, hardening and softening.
3.2
Permeation
The process of chemicals passing through the shoe material at the molecular level.This process includes. adsorption of chemical molecules in contact with the (outer) surface of the material;
Diffusion of adsorbed molecules in a material; desorption of molecules from another (inner) surface of the material.
3.3
Testchemicals
Chemicals or mixtures of chemicals used to determine changes in transmission time and performance under laboratory conditions.
The human body has an adverse effect.
Related standard:   GB/T 38696.1-2020  GB/T 38696.2-2020
Related PDF sample:   GB/T 38300-2019  GB 32166.1-2016
   
 
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