On February 9, 2009, the Chinese National Standardization Administration (SAC) issued the national standard "Fireproof Sealing Materials." This standard stipulates the terms and definitions, classification and marking, requirements, test methods, inspection rules, comprehensive judgment criteria, and packaging, marking, storage and transportation of fire-proof plugging materials.
This standard applies to all kinds of through holes in structures, structures and various types of facilities used in the construction of cracks used fire blocking materials or fire prevention plug assembly, fire protection expansion seals and hard polyvinyl chloride construction used inside building parts Excluding the drainage pipe fire ring.