Fire-resistant closed door
There are three main types of fireproof closed doors:
One is to add a double-layer sealing strip at the joint of the door leaf and the door frame for an ordinary steel fire door to increase the sealing effect. This method is suitable for places where the sealing requirements are not particularly high.
The second is the fire-proof closed door used in civil air defense. Its function is mainly to meet the requirements of people's evacuation during war and natural disasters. Its manufacturing process has strict requirements and is applicable to the requirements of civil air defense doors.
The third is an industrial fire-resistant closed door, which is mainly installed in a coal mine and also has a waterproof function. It is also called a fire-proof and waterproof closed door. Product quality standards and testing standards strictly implement Q / WMS-3010-2005 (closed door).
Main structure of fireproof closed door for coal mine:
1.Fireproof closed door door leaf is welded by flat steel plate, T-shaped rib plate, ring beam, etc.
2.The door frame is a combination of channel steel and I-shaped steel frame structure
3.The tensioning device is a wedge-shaped slider.
4.The door hinge is supported by rolling bearings
Fire-resistant closed door model, specifications and technical parameters:
The maximum pressure of fire-resistant closed doors is 98KPa, which is divided into 4 specifications according to the size of the mouth. Example:
Serial number model specification drawing number
1 MMB1.4 × 1.8 B85-373 (1).
2 MMB1.6 × 1.8 B85-373 (2)
3 MMB1.8 × 2.0 B85-373 (3)
4 MMB2.1 × 2.0 B85-373 (4)
MMB1.4 × 1.8 MMB (closed door) 1.4 (Net pass width of 1400mm) 1.8 (Net pass height of 1800mm)钢质超大防火门_钢质防火门最大尺寸 Previous: Steel oversized fire door_Maximum size of steel fire door 室内防火门 Next post: Indoor fire doors