GB27897-2025

Class A foam extinguishing agent

A类泡沫灭火剂

GB 27897-2025 é uma norma nacional chinesa obrigatória que entrará em vigor: Class A foam extinguishing agent. Setor: Meio ambiente. Foco: Segurança de produtos. Entrada em vigor: 1 de nov. de 2026.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to the research, development, production, and inspection of Class A foam extinguishing agents used for extinguishing Class A fires and thermal insulation protection. It is mandatory for manufacturers producing these specific fire extinguishing agents for the Chinese market. It does not cover other types of foam agents or fire suppression systems not utilizing Class A foam.

Requisitos técnicos

GB 27897-2025 establishes the product models, technical requirements, and testing protocols for Class A foam extinguishing agents. It introduces updated parameters, including the addition of viscosity requirements and the removal of specific fluidity metrics found in the previous GB 27897-2011 version. The standard specifies physical and chemical requirements for the foam concentrate, including freezing point, freeze-thaw resistance, viscosity, pH levels, and corrosion rates for both steel and aluminum materials. Manufacturers must declare specific characteristic values for mixing proportions used in Class A fire extinguishing and thermal insulation applications. For the foam solution, the standard outlines performance criteria such as surface tension, wetting ability, 25% drainage time, and thermal insulation performance. It also defines critical fire suppression performance metrics, requiring specific maximum extinguishing times and minimum burn-back resistance times.

Métodos de ensaio

The standard details rigorous testing procedures, including temperature treatment to assess stability, freezing point determination, and viscosity measurement using a rotational viscometer. It also outlines methods for evaluating corrosion rate, surface tension, and wetting time. Fire performance is tested using a standard compressed air foam system against a specified wood crib fire scenario. Compliance requires passing both factory and type tests as defined in the inspection rules.

Perguntas frequentes

What products are regulated under GB 27897-2025?

It regulates Class A foam extinguishing agents specifically designed for extinguishing Class A fires and providing thermal insulation protection.

What are the main updates from the previous version?

The 2025 version removes the MJABP product model and specific fluidity requirements, while adding viscosity requirements and upper limit requirements for mixing proportion characteristic values.

Does GB 27897-2025 apply to seawater-compatible agents?

Yes, the standard includes specific requirements and testing procedures for agents declared suitable for use with both freshwater and artificial seawater.

The summary above provides a high-level overview of GB 27897-2025. 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 27897-2025 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Segurança
CCS: C84
ICS: 13.220.10
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China

Relações

Substitui:GB 27897-2011 (Vigente)