GB12514-2026

Technical specifications for fire couplings

消防接口技术条件

GB 12514-2026 est une norme nationale chinoise obligatoire à venir : Technical specifications for fire couplings. Secteur : Construction. Thème principal : Sécurité des produits. Entrée en vigueur : 1 févr. 2027.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

Cet aperçu n’est actuellement disponible qu’en anglais.

Champ d’application

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.

Exigences techniques

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.

Méthodes d’essai

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.

Questions fréquentes

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.

Indications d’applicabilité

Type: Produit
CCS: C84
ICS: 13.220.20
Autorité compétente: National Fire and Rescue Administration
Comité technique: National Technical Committee on Fire Protection of Standardization Administration of China

Relations

Remplace:GB 12514.1-2005 (En vigueur) , GB 12514.2-2006 (En vigueur) , GB 12514.3-2006 (En vigueur) , GB 12514.4-2006 (En vigueur)