This standard specifies the terms and definitions, purchase requirements, transportation and storage, and process technology requirements when slag powder is used as a concrete admixture to replace part of the cement in the production of cement products. This standard applies to the technical regulations for the use of slag powder in the production of reinforced concrete drainage pipes, prestressed concrete pipes, prestressed steel cylinder concrete pipes, annular concrete poles, pre-tensioned prestressed concrete pipe piles and other cement products. Slag powder can also be used in the production of other cement products.