1. Main materials and classification of smoke-blocking curtains: The smoke-blocking vertical wall is made of non-combustible material as a smoke-proof partition for the smoke-proof partition, and the fire resistance limit is not less than 0.5h. It is installed vertically under the roof, beam or sus
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There are 600kg, 800kg, 1000kg, 1500kg, 2000kg motors for fireproof rolling door motors according to different lifting forces. Let's calculate the weight of fireproof rolling shutters. Generally, a square meter of steel fireproof rolling shutters weighs about 10kg. Generally, the lifting force o