GB24539-2025

Protective clothing—Chemical protective clothing

防护服装化学防护服

GB 24539-2025 は施行予定の中国強制国家規格です：Protective clothing—Chemical protective clothing。業界：化学品。テーマ：製品安全。施行日：2026年9月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

GB 24539-2025 specifies the classification, technical requirements, and testing methods for chemical protective clothing used in workplaces and emergency rescue operations. It applies to garments designed to protect against gaseous, liquid, and solid chemical substances. This standard is mandatory for all manufacturers of chemical protective clothing in China, but it does not apply to chemical protective clothing specifically designed for firefighting. It also does not specify performance requirements for standalone headgear, gloves, footwear, or respiratory equipment unless they are an integral part of the protective suit.

技術要求

The standard classifies chemical protective clothing into several types based on the nature of the hazard and overall protective performance, including gas-tight (Type 1), liquid-tight (Type 3 and 4), solid particulate (Type 5), limited liquid spray (Type 6), and woven acid/alkali (Type 7) suits. Technical requirements cover structural design, ensuring materials are non-irritating and compatible with other PPE. For instance, gas-tight suits must feature full-encapsulation designs with transparent visors and one-way exhaust valves. Performance requirements are divided into overall suit protection, fabric chemical performance, and fabric physical performance. Manufacturers must ensure all materials meet minimum performance levels for properties like permeation resistance, liquid penetration resistance, and repellency. The standard lists 15 specific test chemicals (e.g., acetone, sulfuric acid, chlorine gas) for evaluating permeation performance. Physical requirements include abrasion resistance, flex cracking resistance, tear strength, tensile strength, and puncture resistance. For reusable garments, specific higher performance levels are mandated for flex cracking and tensile strength. The standard also includes requirements for seams, visors, and integrated gloves/boots, ensuring comprehensive protection.

試験方法

GB 24539-2025 outlines a comprehensive suite of testing methods, primarily detailed in its appendices. Key tests include: - Overall Gas-tightness Test (Appendix A): Evaluates the pressure drop in inflated suits to ensure no leakage. - Inward Leakage Test (Appendix B): Uses NaCl aerosol or SF6 gas to measure the inward leakage rate while a subject walks on a treadmill. - Liquid Tightness Tests (Appendix C): Methods for jet, spray, and limited spray tests using a fluorescent dye solution. - Chemical Permeation Test (Appendix F): Determines the breakthrough time and permeation rate of chemicals through the fabric using open or closed-loop systems. - Liquid Penetration Resistance Test (Appendix G): Assesses fabric resistance to pressurized liquids. - Repellency Test (Appendix J): Measures the penetration, absorption, and repellency indices of the fabric. - Abrasion and Flex Cracking Tests (Appendices K and L): Evaluate physical durability using Martindale and flexing methods, with endpoints determined by pressure vessel, hydrostatic pressure, or visual inspection.

よくある質問

What products are regulated under GB 24539-2025?

GB 24539-2025 regulates chemical protective clothing used in workplaces and emergency rescue, including gas-tight, liquid-tight, particulate, and acid/alkali suits. It does not cover firefighting suits.

Are there any updates from the previous version of GB 24539-2025?

Yes, this version replaces GB 24539-2021 and GB/T 23462-2009. Key updates include changes to the scope, terminology, classification, and technical requirements for partial body protection, as well as updated testing methods for permeation and liquid penetration resistance.

How does GB 24539-2025 differ from international standards like ISO 16602?

While GB 24539-2025 aligns with international principles found in ISO 16602 and ISO 6529, it incorporates specific Chinese national requirements, such as the inclusion of woven acid/alkali protective clothing (Type 7) and specific test chemicals and procedures tailored to domestic regulatory needs.

The summary above provides a high-level overview of GB 24539-2025. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 24539-2025 today to access all detailed parameters, tables, and testing procedures.

適用のヒント

種別: 製品
CCS: C 73
ICS: 13.340.10
所管部門: Ministry of Emergency Management
技術委員会: National Technical Committee on Personal Protective Equipment of Standardization Administration of China