Construction method of air duct wrapped fireproof board

The air duct wrapped fire-proof board is laminated by inorganic non-combustible material. The product has the characteristics of non-combustible, light weight, high strength and so on. It is suitable for fire protection of cables of various voltage levels in electric power, petroleum, petrochemical, metallurgy, communication, construction and other industries. It is generally used for fire resistance separation between multi-layer cables and fire blocking of cable shafts, holes and cabinets. It can also be used for making all kinds of fire hoods, fire baffles and fire doors, fire-resistant air ducts, fire-resistant ceiling, fire-resistant cladding of steel structures, etc.

Manufacturing method of galvanized iron sheet air duct outer fireproof board

One. Ventilation duct (smoke exhaust duct) is divided into two types:

1. It is covered by the outer bag of the iron duct, universal 8-9-10mm. Fire proof board fire resistant 1 hour plate 8mm, fire resistant 2 hours plate 10mm.

Two. for the self-supporting air duct, special 10mm fire retardant board, conventional 10mm, fire resistant 2 hours outside the duct is more wrapped.

1. The cladding construction technology of iron sheet air duct is to carry out outsourcing cladding after the iron sheet air duct is lifted. 1. 4 L Angle plus light steel Angle steel (40x40x0.6,L) 4 L light steel Angle iron length shall not exceed 800mm-1000mm-1220mm spacing, fixed in the corner of U-shaped keel, UL keel gap filled with 100㎏/m2 bulk weight rock wool. Then cut the fireproof board to the required size 4 pieces and fasten them to the light steel keel with tapping screws. The four fireproof boards are fixed on the last four corners and joints of the iron sheet air duct with fireproof sealant. In order to be beautiful and strong, the four corners can be wrapped with L 4x4x0.6 galvanized light steel Angle iron. Fireproof plate according to the needs of the length of the plate and the air duct can be determined at will, in order not to waste the plate to reduce the loss of the plate, can be designed to arrange the length of each air duct covered by the air duct can be made on the spot, when the flange is staggered flange installation U-keel considering no material can be splicing fireproof plate.