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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

ABNT NBR 7809
Coarse aggregate - Determination of shape index by the caliper - Method of test

Edition 2019-01-31

Original language Portuguese

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

ABNT NBR 7809 Coarse aggregate - Determination of shape index by the caliper - Method of test

Want to learn more?

ABNT NBR 7809
Coarse aggregate - Determination of shape index by the caliper - Method of test