QSD-GA672
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QSD-GA672
Characteristics of steel-wood (solid wood edge sealing) thermal and fire-resistant doors:
The door frame of the steel-wood (solid wood edge banding) thermal and fire-resistant door is made of steel plates, while the door leaf’s frame is constructed from wood that has undergone flame-retardant treatment and is lined with steel plates. The door panel features an artificial fiberboard covered with wood veneer. The interior of the door leaf is filled with a fire-resistant and thermally insulating material that is non-toxic and harmless to humans. The door is equipped with fire-rated hardware accessories, giving it a certain level of fire resistance.
|
Category |
Fire resistance time |
Door frame steel plate thickness |
Door leaf material |
Door leaf thickness |
||
|
Eucalyptus wood |
Thickness of the inner lining steel plate |
Thickness of engineered wood panels |
||||
|
Class A |
1.5h |
1.5mm |
Flame-retardant treatment |
0.8mm |
12/14mm |
76/80mm |
|
Class B |
1.0h |
1.5mm |
0.8mm |
12/14mm |
76/80mm |
|
Note: Class A and Class B steel-wood fire doors differ in the following ways:
1. The density of the insulation and fire-resistant door filling material (fire-rated door core board) for Class B steel-wood doors (with solid wood edge banding) is (360 ± 36) kg/m³. 3;
2. Maximum processing dimensions and covering types for steel-wood (solid wood edge banding) thermal-insulated and fire-rated doors:
2.1 Single-leaf door, 1100mm x 2300mm; the door leaf can feature decorative patterns.
2.2 Double-door, 1800mm x 2300mm; the door leaf can feature decorative patterns.
Schematic diagram of the steel-wood thermal insulation fire-rated door structure:
Steel plate ---------------------------> Fire-retardant coating ---------> Perlite fire-resistant door core board -------------> Steel plate -------------------> Panel ---------------------> Finished product
Characteristics of steel-wood thermal insulation fire doors:
1. Steel-wood insulated fire-rated doors are constructed with a steel frame and a door leaf skeleton made of medium-density fiberboard for the door leaf panel. The door leaf is lined with steel plates, and its interior is filled with fire-resistant and heat-insulating materials that are non-toxic and harmless to humans. These doors are equipped with fire-rated hardware accessories, giving them a certain level of fire resistance.
|
Category |
Fire resistance time |
Door frame steel plate thickness |
Door leaf steel plate thickness |
Door leaf density board thickness |
Door leaf thickness |
|
Class A |
1.5h |
1.5mm |
0.8mm |
12mm/14mm |
76mm/80mm |
|
Class B |
1.0h |
1.5mm |
0.8mm |
12mm/14mm |
76mm/80mm |
Note: Class A and Class B steel-wood fire doors differ in the following ways:
The density of the fire-resistant door core board made of filling material—dry density for Class A—is (400 + 40) kg/m³. 3 , Class B is (360 + 36) kg/m 3。
The maximum dimensions for Class A and Class B steel-wood fire doors are: single door 1100x2300 (mm), and double door 1800x2300 (mm).
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