GB25200-2010

Powder nozzle

干粉枪

GB 25200-2010 é uma norma nacional chinesa obrigatória vigente: Powder nozzle. Setor: Meio ambiente. Foco: Segurança de produtos. Entrada em vigor: 1 de mar. de 2011.

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 various types of powder nozzles that use dry powder as the extinguishing medium. It is specifically designed for fire-fighting equipment used by single or multiple operators. Manufacturers of fire suppression devices must comply with this standard to enter the Chinese market. It does not cover nozzles designed for other extinguishing agents like foam or water.

Requisitos técnicos

Chapter 5 of this standard outlines the mandatory performance requirements for powder nozzles. It specifies criteria for appearance, basic performance parameters, and material selection. Components in direct contact with dry powder must be made of corrosion-resistant materials such as copper or stainless steel. Compliance with these material specifications is strictly enforced to ensure operational reliability. The standard also defines critical operational metrics, including effective discharge rate, working pressure range, and effective range. These parameters dictate the nozzle's firefighting efficiency. Additionally, it sets forth requirements for sealing performance, hydrostatic strength, and drop resistance to ensure durability in harsh environments. GB 8181-2005 is referenced for certain drop and corrosion test procedures. Furthermore, the standard mandates specific structural designs for operating mechanisms, such as lever-type, bow-type, and trigger-type switches. The operating torque must not exceed specified limits. Manufacturers must ensure that interface types and dimensions comply with the relevant GB 12514 series standards.

Métodos de ensaio

The standard details various testing methods to verify compliance. Key tests include the basic performance test to measure effective discharge time and range, the sealing performance test conducted underwater, and the hydrostatic strength test. It also references GB 8181-2005 for drop and corrosion resistance testing, alongside specific procedures for evaluating jet impact resistance and operating torque.

Perguntas frequentes

What products are regulated under GB 25200-2010?

It regulates powder nozzles used for fire extinguishing, specifically those using dry powder as the extinguishing medium.

Are there any mandatory sections in GB 25200-2010?

Yes, Chapter 5 detailing performance requirements is mandatory, while the rest of the standard is recommended.

What materials are required for components in contact with dry powder?

Components directly contacting the dry powder must be made of corrosion-resistant materials like copper or stainless steel.

The summary above provides a high-level overview of GB 25200-2010. 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 25200-2010 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
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