GB28735-2012

Door opener for fire fighting

消防用开门器

GB 28735-2012 é uma norma nacional chinesa obrigatória vigente: Door opener for fire fighting. Setor: Meio ambiente. Foco: Segurança de produtos. Entrada em vigor: 1 de jun. de 2013.

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 door openers for fire fighting used by firefighters during fire suppression and emergency rescue operations. It covers the terminology, model designations, technical requirements, testing methods, and inspection rules for these hydraulic forcible entry tools. It is mandatory for all manufacturers producing fire-fighting door openers for the Chinese market. The standard specifically references DIN 14751-5:2008 for single-acting hydraulic rescue tools.

Requisitos técnicos

The standard specifies comprehensive physical and mechanical requirements for fire-fighting door openers. Key areas include appearance quality, requiring smooth surfaces without burrs and proper anti-corrosion treatment for metal parts. It mandates minimum thresholds for maximum opening force and maximum opening distance to ensure operational effectiveness during emergencies. Furthermore, the standard outlines critical performance criteria such as opening performance, which must be smooth without leakage or mechanical damage under load. It also details requirements for base foot return performance, ensuring the tool resets properly with minimal gap between the feet. Manufacturers must ensure the tool withstands 1.5 times the rated working pressure during strength tests. Additional requirements cover high and low temperature performance, ensuring functionality in extreme environments, and sealing performance to prevent hydraulic fluid displacement under stress. The standard also mandates a reliability test to verify continuous operation without failure. For accessories, it specifies that hydraulic hoses must have metal sleeves and comply with GB/T 3683, while hydraulic couplings must feature self-locking functions and dust protection devices.

Métodos de ensaio

The testing procedures involve visual inspection and mechanical testing using a specialized test rig equipped with pressure, displacement, and force sensors. Key tests include the opening force and distance test, conducted at rated working pressure to measure maximum output. The strength test applies 1.5 times the rated pressure at specific extension points. Environmental testing involves high and low temperature performance tests, storing the tool at -30°C and 55°C before operation. The reliability test requires 50 continuous cycles within 250 minutes at 80% rated pressure. Accessory tests evaluate hydraulic hoses and couplings under 1.5 times rated pressure and axial pulling forces.

Perguntas frequentes

What products are regulated under GB 28735-2012?

GB 28735-2012 regulates door openers for fire fighting, which are hydraulic tools used by firefighters to breach doors and door frames during emergencies.

Are there any mandatory sections in GB 28735-2012?

Yes, Chapters 5, 7, and clauses 8.1.1, 8.2.3 are mandatory. Compliance with these sections is legally required for market access in China. The remaining clauses are recommended.

What are the key performance metrics for the door opener?

The standard sets minimum requirements for maximum opening force (not less than 60kN) and maximum opening distance (not less than 60mm), along with strict criteria for strength, sealing, and reliability under various conditions.

The summary above provides a high-level overview of GB 28735-2012. 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 28735-2012 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C85
ICS: 13.220.10
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China