GB27897-2025
Class A foam extinguishing agent
A类泡沫灭火剂
GB 27897-2025 is an upcoming mandatory Chinese national standard for Class A foam extinguishing agent. It appears in the Environment compliance cluster with a product safety focus and has an implementation date of Nov 1, 2026.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
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.
Technical requirements
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.
Testing methods
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.
FAQs
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.
Applicability hints
- Type
- Safety
- CCS
- C84
- ICS
- 13.220.10
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China
Relationships
Replaces:GB 27897-2011 (Current)