GB4351-2023

Portable fire extinguishers

手提式灭火器

GB 4351-2023 es una norma nacional china obligatoria vigente: Portable fire extinguishers. Sector: Medio ambiente. Enfoque: Seguridad de productos. Entrada en vigor: 1 ene 2025.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard applies to the design, manufacturing, and testing of portable fire extinguishers and their components used in industrial and civil buildings. It covers extinguishers with a total mass not exceeding 23 kg for carbon dioxide types and 20 kg for other types, including dry powder, water-based, and clean agent extinguishers. It is not applicable to fire extinguishers designed for specialized industrial vehicles or stationary fire suppression systems. The standard also governs the performance requirements for critical components such as cylinders, valves, and pressure indicators.

Requisitos técnicos

GB 4351-2023 specifies comprehensive performance requirements for portable fire extinguishers across various environmental and operational conditions. It defines specific operating temperature ranges and strict充装 (filling) tolerances, including maximum fill densities for carbon dioxide. Manufacturers must ensure that extinguishers meet rigorous mechanical and sealing performance criteria to prevent leakage and structural failure during use. The standard details discharge performance metrics, such as effective discharge time, delayed-action time, and residual extinguishing medium rates. It also mandates specific mechanical integrity tests, including impact and vibration resistance, to ensure the extinguisher's durability in emergency scenarios. Extinguishers must demonstrate reliable anti-corrosion properties to withstand harsh environmental conditions over their service life. A critical aspect of the standard is the fire extinguishing performance classification for Class A, B, C, D, and F fires. It sets minimum extinguishing ratings based on the extinguisher's charge capacity and agent type. Additionally, it introduces specific requirements for alcohol-resistant (AR) water-based extinguishers and mandates electrical insulation performance for specific agent types to ensure operator safety against live electrical equipment.

Métodos de ensayo

The standard outlines rigorous testing procedures to validate compliance. Key tests include discharge performance tests at 20°C and extreme operating temperatures to measure effective discharge time and distance. Mechanical integrity is verified through impact drop tests and multi-axis vibration tests. Additionally, the standard mandates salt spray exposure for external corrosion assessment and specific fire model tests (using wood cribs for Class A, fuel pans for Class B, and cooking oil pans for Class F) to evaluate real-world extinguishing efficacy. Helium trace gas methods and water immersion are utilized for seal integrity verification.

Preguntas frecuentes

What products are regulated under GB 4351-2023?

GB 4351-2023 applies to portable fire extinguishers with a total mass not exceeding 23 kg for CO2 types and 20 kg for other types. It covers dry powder, water-based, carbon dioxide, and clean agent extinguishers used in industrial and civil buildings.

Are there any updates from the previous version of GB 4351?

The 2023 version is a mandatory standard that consolidates three previous standards (GB 4351.1-2005, GB 4351.2-2005, and GB/T 4351.3-2005). Key updates include revised temperature ranges, new requirements for Class D and F fires, added alcohol-resistant (AR) criteria for water-based extinguishers, and updated performance rules for valves and pressure indicators.

How does GB 4351-2023 differ from ISO standards?

While GB 4351-2023 aligns with general international fire safety principles, it incorporates specific Chinese national requirements and references domestic standards (such as GB/T 5099.1 for cylinders). Manufacturers must ensure compliance with these specific GB-referenced material and testing protocols to access the Chinese market.

The summary above provides a high-level overview of GB 4351-2023. 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 4351-2023 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Producto
CCS: C84
ICS: 13.220.10
Organismo competente: National Fire and Rescue Administration
Comité técnico: National Technical Committee on Fire Protection of Standardization Administration of China

Relaciones

Sustituye a:GB 4351.1-2005, GB 4351.2-2005, GB/T 4351.3-2005