Standard No.:	GB/T 31547-2015
English Name:	Electric bicycle inner tubes
Chinese Name:	电动自行车内胎
Chinese Classification:	G41    Tyre
Professional Classification:	GB    National Standard
ICS Classification:	83.160.10 83.160.10    Road vehicle tyres 83.160.10
Issued by:	AQSIQ; SAC
Issued on:	2015-05-15
Implemented on:	2016-2-1
Status:	superseded
Superseded by:	GB/T 31547-2023 Electric bicycle inner tubes
Superseded on:	2024-7-1
Language:	English
File Format:	PDF
Word Count:	3500 words
Price(USD):	100.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the types, requirements, test methods and marking of electric bicycle inner tubes. This standard is applicable to mould vulcanized inner tubes for assembling electric bicycle 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 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties GB 1796.1 Tyre valves - Part 1: 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 Types Inner tubes can be classified into two categories by their materials: ——Category A: inner tubes made of or mainly made of natural rubber; ——Category B: inner tubes made of or mainly made of butyl rubber.

Foreword i 1 Scope 2 Normative references 3 Types 4 Requirements 5 Test methods 6 Marking