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QS-B8138

The door frame of the steel-wood (copper-finished) thermal and fire-resistant door is made of thick steel plates. The door leaf’s frame consists of steel plates combined with engineered fiberboard, and its surface is decorated with copper sheets. The interior of the door leaf is filled with fire-retardant and thermally insulating materials that are non-toxic and harmless to humans. The door is equipped with fire-resistant hardware accessories, giving it a certain level of fire resistance.

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Steel-wood (copper-finished) thermal and fire-resistant door series

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QS-B8138

Characteristics of steel-wood (copper-finished) thermal and fire-resistant doors:

Category	Fire resistance time	Door frame material			Door leaf material			Door leaf thickness
					Thickness of the inner lining steel plate	Thickness of engineered wood panels	Finishing copper plate thickness
		Steel plate thickness		Steel plate thickness
Class A	1.5h	1.5mm	0.6mm		0.8mm	8mm	0.6mm	78mm
Class B	1.0h	1.2mm	0.5mm		0.3mm	8mm	0.5mm	68mm

Attention:

The differences between Class A and Class B steel-wood fire doors are:

1. The density of the Class A steel-wood (copper-finished) thermal-insulated and fire-rated door filling material (fire-rated door core board) is (400 ± 40) kg/m³.

2. The density of the Class B steel-wood (copper-finished) thermal and fire-resistant door filling material (fire-rated door core board) is (260 ± 26) kg/m³.

3. Maximum processing dimensions and covering types for steel-wood (copper-finished) thermal-insulated and fire-rated doors:

3.1. Single door, 1000mm × 2300mm; the door leaf can feature decorative patterns. Single door (Type A): 1225;

3.2 The 1800mm×2300mm double-door leaf can feature decorative patterns and include glass (glass dimensions: 250mm×660mm); it can be used to cover mother-and-child fire doors.