This standard specifies the terms and definitions of Spray Coatings for Blast Furnace Lining Maintenance Classification and Grades, Technical Requirements, Test Methods, Mass Assessment Procedures, Encasement, Marking, Transport, Storage and Mass Certificates. Applicable to Spray Coatings for Blast Furnace Lining Maintenance. A series of normative reference documents are cited, including amorphous refractory materials, chemical analysis methods, etc. According to the different construction methods, it is divided into dry Spray Coatings and wet Spray Coatings. According to the different Al2O3 content, it is divided into multiple grades. The letters and numbers represent different properties and compositions.