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Window door intumescent strip
Fire door strip can expand substantially in volume to form a dense char to prevent the penetration of gas, smoke and flames in the event of a fire. It is developed mainly with expandable graphite, which has abundant sources in China. And we also have strong technology support in R&D of expandable graphite for fire resisting, so that to meet various demands from users all over the world.


series | type | specification of fire door strip | ||
Length range(mm) | Width range(mm) | Thickness range(mm) | ||
HGYZ | HGYZ-D | ≤2000 | ≤1000 | 2.0-16.0 |
HGYZ-C | ≤2000 | ≤1000 | 2.0-16.0 | |
HGYZ-B | ≤2000 | ≤1000 | 2.0-16.0 | |
HGYZ-A | ≤2000 | ≤500 | 2.0-4.0 | |
HGYY | HGYY-D | ≤25000 | ≤400 | 0.8-4.0 |
HGYY-C | ≤25000 | ≤400 | 0.8-4.0 | |
HGYY-B | ≤25000 | ≤400 | 0.8-4.0 | |
HGYY-A | ≤25000 | ≤400 | 0.8-4.0 | |
HGRJ | HGRJ-D | ≤50000 | ≤340 | 0.6-4.0 |
HGRJ-A | ≤50000 | ≤340 | 0.6-4.0 | |
LGYZ | LGYZ-D | ≤2000 | ≤1000 | 2.0-16.0 |
LGYZ-C | ≤2000 | ≤1000 | 2.0-16.0 | |
LGYZ-B | ≤2000 | ≤1000 | 2.0-16.0 | |
LGYZ-A | ≤2000 | ≤500 | 2.0-4.0 | |
LGYY | LGYY-D | ≤25000 | ≤400 | 0.8-4.0 |
LGYY-C | ≤25000 | ≤400 | 0.8-4.0 | |
LGYY-B | ≤25000 | ≤400 | 0.8-4.0 | |
LGYY-A | ≤25000 | ≤400 | 0.8-4.0 | |













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