GB518-2020

Motorcycle tyres

摩托车轮胎

GB 518-2020 é uma norma nacional chinesa obrigatória vigente: Motorcycle tyres. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de jan. de 2022.

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 new pneumatic motorcycle tyres designed for use in the Chinese market. It covers various types of motorcycle tyres, including those for mopeds, and encompasses both bias and radial constructions. It is mandatory for all manufacturers and importers of motorcycle tyres in China.

Requisitos técnicos

The standard outlines comprehensive specifications for tyre dimensions, safety performance, and sidewall markings. For dimensions, it mandates strict tolerances for new tyre overall diameter and section width, utilizing specific design and manufacturing tolerance coefficients. Regarding safety, the standard sets minimum breaking energy requirements for strength performance at each test point, varying by tyre load type and section width. It also requires endurance performance testing to ensure tyres do not exhibit delamination, cracking, or cord breakage after testing. Furthermore, tyres with a speed symbol of J or above must pass a high-speed performance test under specific conditions. The standard also details requirements for tread wear indicators, requiring at least three equally spaced indicators around the circumference, with a minimum height of 0.8 mm. Manufacturers must ensure all mandatory sidewall markings are permanently molded, including specifications, load index, speed symbol, and origin.

Métodos de ensaio

Testing procedures involve measuring the tyre's physical dimensions, including overall diameter and section width, according to GB/T 521. Safety performance tests, including strength, endurance, and high-speed evaluations, are conducted based on GB/T 13203. Visual quality inspections are performed in accordance with HG/T 2177, and inner tubes, if applicable, are tested per GB/T 7036.2.

Perguntas frequentes

What products are regulated under GB 518-2020?

The standard applies to all new pneumatic motorcycle tyres, including categories such as moped tyres, radial tyres, and various tread types (C-type and D-type). It does not apply to used or retreaded tyres.

Are there any major updates from the previous GB 518-2007 version?

The 2020 version introduces the term and definitions for motorcycle radial tyres. It also updates strength testing criteria to require minimum breaking energy at *each test point*, mandates high-speed performance tests for speed symbols J and above, and adds new marking requirements for tread wear indicators and specific tread types.

How does GB 518-2020 align with international ISO standards?

While GB 518-2020 incorporates general international principles for tyre sizing and load indices, it includes specific Chinese national requirements for tread wear indicators and mandatory sidewall markings. Manufacturers must verify compliance with these unique domestic marking requirements.

The summary above provides a high-level overview of GB 518-2020. 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 518-2020 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: G41
ICS: 83.160.10
Órgão competente: Ministry of Industry and Information Technology
Comitê técnico: Ministry of Industry and Information Technology

Relações

Substitui:GB 518-2007