Download or read book GB T 521 2012 Translated English of Chinese Standard GBT 521 2012 GB T521 2012 GBT521 2012 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2015-04-06 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.