GB12514-2026

Technical specifications for fire couplings

消防接口技术条件

GB 12514-2026 é uma norma nacional chinesa obrigatória que entrará em vigor: Technical specifications for fire couplings. Setor: Construção. Foco: Segurança de produtos. Entrada em vigor: 1 de fev. de 2027.

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 fire couplings used for connecting various fire water supply appliances. It covers snap-type, insertion-type, and screw-type interfaces, including hose couplings, pipe thread couplings, and suction pipe couplings. It is mandatory for manufacturers producing fire-fighting equipment for the Chinese market.

Requisitos técnicos

This standard specifies comprehensive technical requirements for fire couplings, including basic dimensions and tolerances for different coupling types. It mandates strict material specifications, requiring aluminum, copper, steel, and cast iron components to meet specific Chinese national standards (e.g., GB/T 1173, GB/T 1176). The standard defines performance criteria such as operation force and torque, sealing performance under specific water pressures, and hydrostatic performance at 1.5 times the rated working pressure. Manufacturers must ensure couplings can withstand these operational stresses without leakage or structural failure. Additionally, it outlines durability requirements including spring fatigue life, drop resistance, and temperature resistance (both high and low). Corrosion resistance is also a key focus, requiring components to withstand salt spray testing. Specialized functions like rotation performance and lock-stop functions are specified for special-type couplings.

Métodos de ensaio

The standard details testing procedures for dimensional inspection using calipers and thread gauges, and visual checks for surface quality. It includes hydrostatic and sealing tests to verify pressure integrity. Durability is evaluated through spring fatigue testing, drop tests from a height of 1.8m, and extreme temperature exposure. Corrosion resistance is assessed via a 120-hour neutral salt spray test. Specialized tests for rotational torque and lock-stop effectiveness are also specified.

Perguntas frequentes

What products are regulated under GB 12514-2026?

GB 12514-2026 applies to fire couplings used for connecting various fire water supply appliances. It covers snap-type, insertion-type, and screw-type interfaces, including hose, pipe thread, and suction pipe couplings.

Are there any updates from the previous version of GB 12514?

Yes, this version consolidates and replaces the previous four-part series (GB 12514.1-2005 to GB 12514.4-2006). It introduces new requirements for high/low temperature resistance, rotation, and lock-stop functions, and updates material and structural specifications.

How does GB 12514-2026 differ from ISO standards?

The standard incorporates specific Chinese dimensional tolerances and structural formats (detailed in the normative appendices) that may differ from international equivalents. Manufacturers must verify dimensional compatibility specifically against GB 12514-2026 rather than assuming direct ISO interchangeability.

The summary above provides a high-level overview of GB 12514-2026. 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 12514-2026 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C84
ICS: 13.220.20
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China

Relações

Substitui:GB 12514.1-2005 (Vigente) , GB 12514.2-2006 (Vigente) , GB 12514.3-2006 (Vigente) , GB 12514.4-2006 (Vigente)