GB/T 14265-2017 General rule of chemical analysis for hydrogen,oxygen, nitrogen, carbon and sulfur in metallic materials

GB/T 14265-1993 General rule of chemical analysis for hydrogen, oxygen, nitrogen, carbon and sulfur in metal's materials

GB/T 20001.4-2015 Rules for drafting standards—Part 4:Test method standards GB/T 6379-1986 Precision of test methods Determination of repeatability and reproducibility for a standard test method by interlaboratory tests GB/T 6379.1-2004 Accuracy(trueness and precision)of measurement methods and results—Part 1:General principles and definitions GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results—Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method GB/T 6379.3-2012 Accuracy(trueness and precision)of measurement methods and results—Part 3:Intermediate measures of the precision of a standard measurement method GB/T 6379.4-2006 Accuracy (trueness and precision) of measurement methods and results—Part 4:Basic methods for the determination of the trueness of a standard measurement method GB/T 6379.5-2006 Accuracy (trueness and precision) of measurement methods and results—Part 5:alternative methods for the determination of the precision of a standard measurement method GB/T 6379.6-2009 Accuracy(trueness and precision)of measurement methods and results—Part 6:Use in practice of accuracy values GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 17433-1998 Foundation terms for chemical analysis of metallurgical products GB/T 17433-2014 Foundation terms for chemical analysis of metallurgical products GB/T 27476.5-2014 Safety in testing laboratories—Part 5:Chemical aspects GB/T 6379.4-2025 Accuracy(trueness and precision)of measurement methods and results—Part 4:Basic methods for the determination of the trueness of a standard measurement method