GB/T 28369-2012 (English Version) Ferroalloys.Experimental methods for the evaluation of the quality variation and methods for checking the precision of sampling

Standard No.: GB/T 28369-2012
Language: Chinese, Available in English version
Release Date: 2012
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 28369-2012

Scope: This standard specifies the test methods for evaluating the quality fluctuation of ferroalloys in order to determine the parameters of random sampling and graded sampling described in the relevant standards. At the same time, it also stipulates the sampling accuracy of random sampling method and fractional sampling method for inspection.

GB/T 28369-2012 Referenced Document

GB/T 18249 Ferroalloys-Experimental methods for checking the bias of sampling and sample preparation
GB/T 2272 Ferrosillicon*， 2020-06-02 Update
GB/T 28371 Ferroalloys.Experimental methods for checking the precision of sample division
GB/T 28372 Ferroalloys.Sampling and preparation of samples.General rules
GB/T 3282 Ferrotitanium*， 2012-12-31 Update
GB/T 3648 Ferrotungsten*， 2013-12-17 Update
GB/T 3649 Ferromolybdenum
GB/T 3795 Ferromanganese Amendment No. 1
GB/T 4008 Ferromanganese-silicon
GB/T 4009 Chromium silicon
GB/T 4010 Ferroallys sampling and preparation of samples for chemical analysis*， 2015-09-11 Update
GB/T 4139 Ferrovanadium*， 2012-12-31 Update
GB/T 5683 Ferrochromium
GB/T 7737 Ferroniobium

2012 GB/T 28369-2012 Ferroalloys.Experimental methods for the evaluation of the quality variation and methods for checking the precision of sampling