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The types of security doors can be classified according to the material: steel, steel-wood structure, aluminum alloy, and copper. Popular anti-theft doors in the market are mainly classified into three categories: stainless steel doors, powder-coated steel doors, and surface-reinforced steel doors. Each has its own characteristics. Of course, the quality, performance and price of different materials are not the same.
1. Barrier-type anti-theft door: It is the common anti-theft door made of welded steel pipe. Its greatest advantage is ventilation, light weight, attractive 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 adopts multiple locking points to ensure the security of the security door. However, the security effect is not as good as a closed security door.
2. Physical door: It is made by cold-rolled steel plate extrusion. The door panels are all steel plates. The thickness of the steel plate is mostly 1.2 mm and 1.5 mm, and the impact resistance is strong. The double-layer steel door leaf is filled with rock wool insulation and fireproof materials, and has the functions of anti-theft, fire prevention, heat insulation, sound insulation and the like. General entity security doors are equipped with cat's eyes, doorbells and other facilities.
3ã€Composite security door: It is composed of physical door and 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.
4. Steel anti-theft door: Steel security door is also the most commonly used on the market, the price is reasonable, but the appearance of the line is relatively hard, it is difficult to integrate with the modern interior decoration.
5, Gangmu anti-theft door: Gangmu anti-theft door is a door of interior decoration, according to the needs of customers, choose different colors, wood strips, lines and patterns to integrate with the interior decoration, price than steel security door Slightly expensive.
6, aluminum alloy security door: aluminum alloy material is not used for ordinary aluminum doors and windows we see, it's high hardness, and bright color, and then decorated with decorative patterns, gives a sense of magnificent, is a mid-range security door , and not easy to fade.
7, copper anti-theft door: brass anti-theft door style advanced, but also in the fire, anti-corrosion, anti-mite, dust have a good performance, material, copper security door is the best, the price is also the most expensive It is generally used only for financial institutions such as banks or high-end residential villas.
8, stainless steel doors: style is mainly grid-style, its characteristics are beautiful, smooth surface, high gloss, will not rust. However, it has a single color, poor anti-theft performance, easy to be smashed, and the price is relatively high.
9, powder steel door: divided into grid type and fully enclosed two, the surface color is rich and varied. Grid-type dusting steel doors and stainless steel grille doors also have the problem of poor caring resistance. The anti-theft performance of the fully enclosed dust-painted steel door is much better than that of the grille-type anti-theft door. Because its surface is completely closed, it is difficult to be destroyed, and the fully-closed anti-theft door is usually equipped with a multi-point locking device. The so-called multi-point locking means that the anti-theft door is equipped with interlocking levers on the up and down, left and right sides. At present, up to fifteen points have been locked. Even if one or two lock points are damaged, the overall anti-theft performance is still not affected. The disadvantage of this type of door is poor rust protection. At present, powder steel doors on the market usually use cold-rolled steel plates as raw materials. Due to the poor rust-proofing function of steel products and the high moisture content in the air of coastal areas, if the phosphating is not complete or there is no anti-rust primer, it is very It will rust quickly. It is worth paying special attention when shopping.
10, surface plastic steel doors: a new type of security doors. Its characteristics are more lock points, the surface color is rich, not rust. The process used is to cover the surface of the steel plate with a PVC protective film, which can be used at a temperature of 400-700°C. The door surface has a variety of printing patterns, such as imitation marble, imitation wood grain, anti-skin pattern and so on. At present, the more popular is the imitation eucalyptus wood grain, the color is red peony, yellow peony, brown variety, can be well with the interior decoration. The price of such security doors is usually 600 to 800 yuan per square meter, which is a mid-range product.
11, the structure of security doors: the thickness of the door frame steel plate should be 2mm or more, the door body thickness is generally more than 20mm, the door body weight is more than 40kg, the door body plate thickness is above 1.0mm, there are several reinforcing steel bars, so that the door body The front and rear panels are organically connected together to enhance the overall strength of the door body. Asbestos and other materials with fireproof, heat-insulating and sound-insulating functions are preferably used as filling materials in the door.
Security doors are all called "security doors". As the name implies, they have certain anti-theft and safe performance. At present, there are many kinds of security doors on the market. According to the standard issued by the Ministry of Education, GB25-92 "General Technical Conditions for Security Doors", security doors can be classified into three types: fence-type security doors, physical doors, and composite doors.