Standard No.:	GB/T 521-2012
English Name:	Test method of measuring peripheral dimensions for tyres
Chinese Name:	轮胎外缘尺寸测量方法
Chinese Classification:	G41    Tyre
Professional Classification:	GB    National Standard
ICS Classification:	83.160.01 83.160.01    Tyres in general 83.160.01
Source Content Issued by:	AQSIQ; SAC
Issued on:	2012-07-31
Implemented on:	2013-2-1
Status:	superseded
Superseded by:	GB/T 521-2023 Test methods for measuring peripheral dimensions of tyres
Superseded on:	2023-10-1
Superseding:	GB/T 521-2003 Test method of measuring peripheral dimensions for tyres
Target Language:	English
File Format:	PDF
Word Count:	2000 words
Translation Price(USD):	40.0
Delivery:	via email in 1 business day

1. Scope This Standard specifies the measuring tools and their accuracy requirements, measurement conditions, measuring methods, data calculation and processing and test report of overall circumference of tyre (cover tyre, inner tube and flap). This Standard is applicable to all new passenger car tyres, truck tires, agricultural tyres, earth-mover tyres, industrial vehicle pneumatic tyres and motorcycle tyres. 2. Normative References The following document is essential for the application of this Standard. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) is applicable to this document. GB/T 6326 Tyre Terms and Definitions 3. Terms and Definitions