Standard No.:	GB/T 31580-2015
English Name:	Series of electric bicycle rims
Chinese Name:	电动自行车轮辋系列
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:	valid
Language:	English
File Format:	PDF
Word Count:	8500 words
Price(USD):	250.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the dimensions and tolerances of the profile of electric bicycle rims, and specifies the rim profile curve and the main dimensions of the part of the tyre shaped to fit the rim. This standard is applicable to the rims of various series of electric bicycle tyres specified in GB/T 31548. 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 normative document (including any amendments) applies. GB/T 2933 Wheels and rims for pneumatic tyres - Vocabulary, designation and marking GB/T 6326 Tyre terms and definitions GB/T 31546 Electric bicycle tyres GB/T 31548 Series of electric bicycle tyres 3 Terms and definitions For the purpose of this document, the terms and definitions given in GB/T 2933 and GB/T 6326 apply.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Classification and designation 6 Profile dimension and size designation of rims 7 Valve hole and flap of rim Annex A (Informative) Method for testing rim dimension Annex B (Informative) Profile of rims with nominal width code of 34 and above Bibliography