GB/T 39693.9-2021 Rubber, vulcanized or thermoplastic—Determination of hardness—Part 9:Calibration and verification of hardness testers (English Version)
This document establishes the Shore A type, Shore D type, Shore AO type, Shore AM type hardness tester (see ISO48 4), portable rubber international hardness tester (see ISO48 5), rubber international hardness tester (see ISO48 2 ) and ultra-low rubber hardness tester (see I
GB/T 39693.9-2021 Referenced Document
ISO 482 Aircraft; Propulsion units and components; Methods of numbering and describing direction of rotation
GB/T 39693.9-2021 history
2021GB/T 39693.9-2021 Rubber, vulcanized or thermoplastic—Determination of hardness—Part 9:Calibration and verification of hardness testers