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GB/T 45291-2025Retreaded tyres for earth-movers (English PDF)

工程机械翻新轮胎

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

January 24, 2025

Implementation date

August 1, 2025

Scope

GB/T 45291-2025 is the English-translated version of 工程机械翻新轮胎.

GB/T 45291-2025 is the Chinese national standard covering a worn earthmover tyre given a new tread — the selection of casings and the sidewall markings they must still carry, the Class A and Class B split by how far the damage goes, the dimensions and the appearance quality, the durability test, the marking, and the hole size measured after buffing to the outermost steel wire or cord, which is what decides whether a casing can be retreaded. First edition, with the production standard GB/T 45292-2025. Under the China Petroleum and Chemical Industry Federation. In force from 1 August 2025. Issued on 24 January 2025, it has been in force since 1 August 2025.

Document preview — GB/T 45291-2025

National Standard of the People's Republic of China

ICS: 83.160.99
Classification: G 41

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 Hole dimension
4 Technical requirements
4.1 Tire selection

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Petroleum and Chemical Industry Federation.

This document is under the jurisdiction of the National Technical Committee for Tire and Rim Standardization (SAC/TC19).

This document was drafted by: Sailun Group Co., Ltd., Guizhou Tire Co., Ltd., Qingdao Taikaiying Special Tire Co., Ltd.

Company, Prinx Chengshan (Shandong) Tire Co., Ltd., Gaotang Xinglu-Bendaco Tire Strengthening Co., Ltd., Beijing Rubber Industry Research and Design Institute Ltd., Shandong Linglong Tire Co., Ltd., Fengshen Tire Co., Ltd., Haian Rubber Group Co., Ltd., Fujian Zhengkun Rubber Technology Co., Ltd., Jiaozuo Product Quality Inspection and Testing Center.

The main drafters of this document are: Shi Chao, He Fujin, Yang Shichun, Zhao Jun, Wu Maojun, Tian Jianguo, Li Miaomiao, Zheng Rui, Zhang Zhengwei, Pei Quanhua, Huang Zhenhua, Gao Juying, Chang Chang, Li Shuhuan, Xu Lihong, Mou Shouyong.

Engineering machinery retread tires

1 Scope

This document specifies the technical requirements, test methods and markings for retreaded tyres for construction machinery.

This document applies to the retreading of pneumatic OTR tyres.

2 Normative references

GB/T 521

GB/T 1190

GB/T 2980

GB/T 6326

GB/T 21286

GB/T 30193

3 Terms and definitions

The terms and definitions defined in GB/T 6326 and the following apply to this document.

3.1 Hole dimension

After grinding, the maximum size of the outermost steel wire of the engineering machinery radial tire or the outermost cord layer of the hole scar of the engineering machinery bias tire The maximum size of

4 Technical requirements

4.1 Tire selection

4.1.1 For retreaded tires, the sidewall markings shall include the following.

a) Tire specifications;

b) Trademark, factory name (or place of origin);

c) Load index (or load symbol or level).

4.1.2 Engineering machinery radial tires are divided into Class A retread tires and Class B retread tires according to the degree of damage. The tire selection items and requirements are shown in Table 1.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 2980 · GB/T 6326

Cited by

Editions of GB/T 45291

Edition	Title	Revision	Status
GB/T 45291-2025	Retreaded tyres for earth-movers	current edition	Current

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