GB/T 31546-2015Electric bicycle tyres (English PDF)
电动自行车轮胎
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 15, 2015
Implementation date
February 1, 2016
Scope
GB/T 31546-2015 is the English-translated version of 电动自行车轮胎.
GB/T 31546-2015 is the Chinese standard "Electric bicycle tyres". Its scope clause reads: This Standard specifies the terms and definitions, classification, requirements, test methods, marking, transportation and storage of electric bicycle tyres.
This Standard applies to pneumatic tyres for electric bicycles. This Standard does not apply to non-pneumatic tyres. Its clauses include terms and definitions; classification; requirements; test methods; marking, transportation and storage.
It was issued by the General Administration of Quality Supervision, Inspection and Quarantine on MAY 15, 2015 and took effect on FEBRUARY 01, 2016.
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Document preview — GB/T 31546-2015
National Standard of the People's Republic of China
- ICS
- 83.160.10
- Classification
- G 41
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope4
- 2 Normative references4
- 3 Terms and definitions4
- 4 Classification4
- 5 Requirements5
- 6 Test methods6
- 7 Marking, transportation and storage6
- Appendix A (Normative) Appearance quality requirements8
1 Scope
This Standard specifies the terms and definitions, classification, requirements, test methods, marking, transportation and storage of electric bicycle tyres. This Standard applies to pneumatic tyres for electric bicycles. This Standard does not apply to non-pneumatic tyres.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are applicable to this document. For the undated references, the latest edition (including all the amendments) are applicable to this document.
GB/T 6326 Tyre terms and definitions
GB/T 23657-2009 Series of cycle rims
GB/T 31548 Series of electric bicycle tyres
GB/T 31549 Performance testing method for electric bicycle tyres
3 Terms and definitions
The terms and definitions defined in GB/T 6326 and the following ones apply to this document.
3.1 Croctchet type tyre
The tyre of which the bead core is made of steel wire or other high-strength materials, and the contour shape of the bead is matched with the croctchet type (CT) rim.
4 Classification
According to the bead and structural style, electric bicycle tyres are divided into […]
5 Requirements
5.4.1 Each tyre shall be set with no less than 3 clearly-observable tread wear marks at equal distances along the circumferential direction. The height of the tread wear mark shall not be less than 0.5 mm.
5.4.2 The shoulders on both sides of the tyre shall be moulded with markers indicating the position of the tread wear mark.
5.4.3 When the tyre is used until the tread wear mark, it shall not be used anymore.
6 Test methods
6.1 Strength test
The tyre carcass strength test is carried out in accordance with the provisions of GB/T 31549.
6.2 Bead unseating hydrostatic test
The bead unseating hydrostatic test of tyres is carried out according to the provisions of GB/T 31549.
6.3 Durability test
The durability test of tyres is carried out in accordance with the provisions of GB/T 31549.
7 Marking, transportation and storage
7.1 Marking
7.1.1 The tyres shall have the following marks. Of which a)~c) are permanent marks. d) and e) are marks that cannot be washed off. The marks are as follows:
a) Specifications (2PR can be omitted if the level is 2);
b) Trademark, name of manufacturer or place of origin;
c) Standard air pressure, minimum air pressure and maximum load;
d) Production number; e) Inspection mark.
The text of the above marks shall not be less than 3 mm×3 mm. […]
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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
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Related Standards
GB/T 31548-2023 — Series of electric bicycle tyres
GB/T 31549-2015 — Performance testing method for electric bicycle tyres
GB/T 6326-2023 — Tyre - Vocabulary
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