At present, there are many types of security doors on the market. According to the GB25-92 "General Technical Conditions for Security Doors" issued by the Ministry of Public Security, the security doors can be divided into three types: fence-type security doors, physical doors and composite doors.
There are many types of security doors in China, such as push-pull fence security doors, swing-type fence anti-theft glass door series doors, plastic embossed security doors and multi-function luxury security doors.
The fence type anti-theft door is a common anti-theft door welded by steel pipes. Its biggest advantage is ventilation, light weight, beautiful appearance and relatively low price. The upper part of the security door is a fence type steel pipe or steel plate, and the lower part is a cold-rolled steel plate, which is locked by multiple lock points to ensure the anti-smashing ability of the security door. However, it is not as good as the closed security door in the anti-theft effect.
The solid door is extruded from cold-rolled steel plate, and the door panels are all steel plates. The thickness of the steel plate is 1.2 mm and 1.5 mm, and the impact resistance is strong. The door double-layer steel plate is filled with rock wool insulation fireproof material, which has the functions of anti-theft, fire prevention, heat insulation and sound insulation. General physical security doors are equipped with cat eyes, doorbells and other facilities.
The composite anti-theft door is composed of a solid door and a fence-type anti-theft door. It has the characteristics of anti-theft and summer fly-proof mosquitoes, ventilation and cooling, and warm insulation in winter.
According to the characteristics of the structure, there are mainly push-pull fence security doors, swing-type fence security doors, plastic embossed security doors and multi-function luxury security doors. For the average consumer, the resident's anti-theft security door is mainly a flat-open anti-theft security door. The swing door is the most demanding security door on the market. Some standards refer to this type of door as a separate door or entry door, indicating that this is a door that distinguishes between indoor and outdoor. Therefore, in addition to anti-theft, it also involves insulation, sound insulation, aesthetics and many other aspects. The swing door is divided into the form: ordinary swing door, door middle door, child mother door and composite door. The ordinary swing door is a closed door with a single fan opening. The door in the door has the advantages of a fence door and a swing door. The part of the outer door is a fence door. There is a small door behind the fence door. The small door can be used for ventilation of the fence door. The small door is closed as a swing door. The role. The sub-mother door is generally used for homes with large door frames, which means that it is convenient to enter and exit at ordinary times, and it is also convenient for large furniture to be moved in. The composite door is also called a frame and two doors, the front door is a fence door, and the back door is a closed swing door.
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