Depending on the physico-chemical composition and purpose, kaolin is produced in the following grades: KES-37, KES-36, KES-35 - dry enriched kaolin for
GOST 20080-1974 Referenced Document
GOST 19286-1977 Concentrated kaolin. Determination of size distribution*, 1977-04-19 Update
GOST 22235-1976 Freight cars for 1520 mm gauge main line railways. General requirements for safety in loading-unloading and shunting operations*, 1976-04-19 Update
GOST 20080-1974 history
1974GOST 19607-1974 Processed kaolin for chemical industry. Specifications