Description

HK-G firestop sleeve are made by macromolecule material.They are light weight, convenient construction.The volume of the HK-G firestop sleeve will expand quickly to ***0 times than before when the temperature above **0℃。The thermal expansion process is quickly and efficient,the expand material can fill all parts of the space in the coaming in a very short time,thus to achieve the effect of firestop and smokeproof.