GB/T 33523.73-2025 Geometrical product specifications (GPS)—Surface texture:Areal—Part 73:Terms and definitions for surface defects on material measures

Scope

This document defines the physical standards and the categories of geometric defects appearing on the surface of calibration samples specified in ISO 5436-1 and ISO 25178-70, and provides terms and definitions for the treatment of these defects.
This document is applicable to the following application scenarios:
a) Assisting purchasers or users in purchasing physical standards for surface measurement from manufacturers or suppliers, specifying the nominal characteristics (ideal geometric characteristics) of the physical standards;
b) Enabling users of physical standards to establish rules for handling surface defects in their physical standards, in order to minimize their measurement uncertainties;
Note: This principle is required in ISO/IEC 17025:2017, sections 7.2.1.1, 7.2.1.3, 7.3.1, 7.8.5 c), and 7.8.5 d).
c) Ensuring that calibration laboratories and users reach an agreement on the treatment methods for surface defects in the physical standards submitted for inspection;
d) Guiding users of physical standards to distinguish the significance and importance of different types of defects;
e) Providing a reference for other GPS standards when selecting measurement location areas or avoiding measurement location areas.

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