This standard specifies the technical requirements, test methods, inspection rules and packaging, marking, storage, transportation and quality certificates of vanadium nitrogen alloys. This standard applies to vanadium-nitrogen alloys used in steelmaking and casting.
GB/T 20567-2006 Referenced Document
GB/T 13247 Methods for sampling and testing the grain size of ferroalloys products*, 2019-10-18 Update
GB/T 3650 The general rules for inspection,packing,storing,transportation,marking and certification of ferroalloy*, 2008-08-05 Update
GB/T 4010 Ferroallys sampling and preparation of samples for chemical analysis*, 2015-09-11 Update