ChinaAutoRegs｜GB/T 31547-2015英文版翻译/电动自行车内胎
Electric Bicycle Inner Tubes
1 SCOPE
This Standard specifies the classification, requirements, test methods and marking, with respect to the electric bicycle inner tubes.
This Standard is applicable to mold vulcanized inner tubes fitted to electric bicycle tyres.
2 NORMATIVE REFERENCES
The following referenced documents are indispensable for the application of this document. For dated references, only the editions cited apply. For undated references, the latest editions of the normative document (including any amendments) apply.
GB/T 528 Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain properties
GB 1796.1 Tyre valves – Part 1: Tube clamp-in valves
GB 1796.2 Tyre valves – Part 2: Rubber base valves
GB/T 31546 Electric bicycle tyres
GB/T 31548 Series of electric bicycle tyres
GB/T 31549 Performance testing method for electric bicycle tyres
3 CLASSIFICATION
Inner tubes are classified into two categories depending on the materials used for manufacturing inner tubes:
Inner tubes made of natural rubber or mainly based on natural rubber are defined as Category A;
Inner tubes made of butyl rubber or mainly based on butyl rubber are defined as Category B.
4 REQUIREMENTS
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