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GB/T 521-2012 English PDF (GBT521-2012)

GB/T 521-2012 English PDF (GBT521-2012)

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Newer version: (Replacing this standard) GB/T 521-2023
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GB/T 521-2012: Test method of measuring peripheral dimensions for tyres
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.

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