General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/Z 24636.4-2009
Scope
This part of GB/Z 24636 specifies the terms, symbols, calculation formulas and design methods related to statistical tolerances based on a given confidence level. This section applies to linear dimensions for which statistical process control is applied, especially fit dimensions with a higher tolerance class; it also applies to metrological quality characteristics with two-sided specification limits and subject to statistical process control.
2009GB/Z 24636.4-2009 Geometrical product specifications(GPS).Statistical tolerance.Part 4:Statistical tolerance design based on given confidence levels