GB24910-2010

Steel plate punched couplers

钢板冲压扣件

GB 24910-2010 est une norme nationale chinoise obligatoire en vigueur : Steel plate punched couplers. Secteur : Construction. Thème principal : Sécurité des produits. Entrée en vigueur : 1 juin 2011.

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 steel plate punched couplers used in construction engineering for steel pipe scaffolding, well frames, and formwork supports with nominal outer diameters of 48.3mm and 42.4mm, as well as other sizes. It is also applicable to couplers used in municipal, water conservancy, chemical, metallurgical, coal, and shipbuilding engineering. It covers right angle couplers, swivel couplers, sleeve couplers, and base plates.

Exigences techniques

The standard specifies mandatory requirements for material mechanical properties, mandating that the steel used must not be lower than 15Mn specified in GB/T 699 or equivalent in GB/T 700. Fasteners like bolts, nuts, and rivets must meet Q235 requirements. All parts of the coupler must be free from cracks, and the surface must undergo galvanizing treatment with a recommended thickness of 0.05mm to 0.08mm. It defines strict performance criteria for different coupler types. For right angle and swivel couplers, the standard sets limits for anti-slip deformation and anti-destruction under specific test loads. For sleeve couplers, tensile performance limits are specified, while base plates must withstand defined compressive loads without failure. Additionally, the standard outlines appearance quality requirements, such as the opening distance between the cover plate and the seat, the flexibility of moving parts, and the clear stamping of model, trademark, and production year on the product.

Méthodes d’essai

Testing must be conducted using steel pipes with specified outer diameters and wall thicknesses, coated with anti-rust paint. The standard details procedures for anti-slip deformation and anti-destruction tests for right angle and swivel couplers, measuring displacement values under increasing vertical loads. Tensile tests for sleeve couplers and compressive tests for base plates are also specified, requiring uniform loading speeds and precise measurement of displacement or structural integrity.

Questions fréquentes

What products are regulated under GB 24910-2010?

GB 24910-2010 regulates steel plate punched couplers used in steel pipe scaffolding, including right angle couplers, swivel couplers, sleeve couplers, and base plates, primarily for construction and various industrial engineering applications.

Is the galvanizing treatment mandatory for the couplers?

Yes, the standard mandates that the surface of the couplers must undergo galvanizing treatment. The recommended thickness for the zinc layer is between 0.05mm and 0.08mm.

What are the key performance tests required by this standard?

The standard requires anti-slip deformation and anti-destruction tests for right angle and swivel couplers, a tensile test for sleeve couplers, and a compressive test for base plates to ensure structural integrity under specified loads.

The summary above provides a high-level overview of GB 24910-2010. 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 24910-2010 today to access all detailed parameters, tables, and testing procedures.

Indications d’applicabilité

Type: Produit
CCS: P97
ICS: 91.220
Autorité compétente: Ministry of Housing and Urban-Rural Development
Comité technique: Ministry of Housing and Urban-Rural Development