1 Scope
This standard specifies the terms and definitions, classification, specification marks, basic parameters, main dimensions and measurement methods for electric bicycle tyres.
This standard is applicable to pneumatic tyres for electric bicycle.
This standard is not applicable to non-pneumatic tyres.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6326 Tyre Terms and Definitions
GB/T 8170 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values
GB/T 31580 Series of Electric Bicycle Rims
HG/T 2906 Static Loaded Performance Testing Method for Cycle Tyres
3 Terms and Definitions
For the purpose of this document, the following terms and definitions and those defined in GB/T 6326 apply.
3.1
croctchet type (CT) tyre
the tyre with the bead core of tyre adopting steel wire or other high-strength materials, and the bead contour shape matching with the crotchet type (CT) rim
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
5 Specification Mark, Basic Parameter and Main Dimension
6 Measurement Method
Annex A (Normative) Calculation of Tyre Dimension
Annex B (Informative) Tyre with Section Width of New Tyres (S) Exceeding 54 mm - Basic Parameter and Main Dimension
