GB/T 47071-2026 Active

This document describes a measurement model (SD model) for production quality control using a single measurement at the production site, even when the standard test method specifies repeated measurements.
This document also describes a general method for expressing the precision of measurement results.
This document is applicable to test methods that specify the number of repeated measurements.
This document is only applicable to test methods where the test results follow a normal (i.e., Gaussian) distribution.
The statistical model of this document is based on the upper and lower limits of production, taking into account the accuracy and reproducibility of the test method. The latter is included in the production limits to determine the areas outside the production limits where test results may fall due to the characteristics of the production process and/or the test method.
This document is designed for project managers, laboratory heads, and production managers. If necessary, statistical technicians should provide the necessary technical support and statistical analysis.
When this document is used in conjunction with test method standards, it is necessary to clearly specify this in all relevant documents, such as product specifications, production process specifications, and contracts.