GB16897-2022

Structure, performance requirements and test methods of brake hose

制动软管的结构、性能要求及试验方法

GB 16897-2022 es una norma nacional china obligatoria vigente: Structure, performance requirements and test methods of brake hose. Sector: Electrónica. Enfoque: Seguridad de productos. Entrada en vigor: 1 ene 2023.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard applies to the structure, performance requirements, and test methods of brake hoses, brake hose end fittings, and brake hose assemblies used in automobiles, motorcycles, mopeds, and trailers. It covers hydraulic, pneumatic, and vacuum brake hoses. It does not apply to spiral tubes or high-temperature air delivery rubber hoses for automobiles. The standard is referenced as GB 16897-2022.

Requisitos técnicos

The standard specifies comprehensive performance requirements for various types of brake hose assemblies. For hydraulic brake hose assemblies, it mandates criteria such as burst strength, maximum expansion, flexural fatigue, and tensile strength. Manufacturers must ensure their products meet the updated requirements for dynamic ozone resistance and specific tensile strengths. For pneumatic brake rubber hose assemblies, the standard outlines requirements for air tightness, length change rate, and adhesion strength. It introduces new performance criteria for flexural fatigue while removing the zinc chloride resistance test. GB 16897-2022 also specifies detailed parameters for vacuum brake hose assemblies, including heat resistance, cold resistance, and fuel resistance. A significant addition in this revision is the inclusion of performance requirements for pneumatic brake plastic hose assemblies. This section covers dimensional stability after high-temperature and boiling water exposure, burst strength under various environmental conditions, and vibration resistance. Compliance with these new plastic hose requirements is mandatory for all new vehicle type approvals.

Métodos de ensayo

The standard details rigorous testing procedures to verify compliance. Key tests include the reduced bore pass test using specific gauges, burst strength tests under increasing pressure, and flexural fatigue tests simulating dynamic operational stress. Environmental resistance is evaluated through cold resistance, ozone resistance, and high-temperature pulse tests. For plastic hoses, additional methods like UV resistance with impact testing and boiling water stability tests are specified.

Preguntas frecuentes

What products are regulated under GB 16897-2022?

It regulates brake hoses, brake hose end fittings, and brake hose assemblies used in automobiles, motorcycles, mopeds, and trailers, covering hydraulic, pneumatic, and vacuum applications.

Are there any updates from the previous version of GB 16897?

Yes, the 2022 version adds performance requirements for pneumatic brake plastic hose assemblies, introduces dynamic ozone resistance for hydraulic hoses, and updates test conditions for various environmental resistances.

When is the implementation date for GB 16897-2022?

For new vehicle type approvals, the standard is effective from its implementation date. For existing approved models, it becomes mandatory 7 months after the implementation date.

The summary above provides a high-level overview of GB 16897-2022. 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 16897-2022 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Producto
CCS: T24
ICS: 43.040.40
Organismo competente: Ministry of Industry and Information Technology
Comité técnico: National Technical Committee on Automobiles of Standardization Administration of China

Relaciones

Sustituye a:GB 16897-2010