1. All-copper
All-copper is made by mixing a certain amount of other alloy elements with brass raw materials in proportion, which improves the corrosion resistance, strength, hardness and machinability of copper materials.
2. Pure copper
Pure copper is the copper with the highest copper content, because the color purple is also called red copper, and the main component is copper plus silver, with the content of 99.5 ~ 99.95%.
3. Aluminum-clad zinc
Brass is an alloy of copper and zinc, which has good mechanical properties and wear resistance.
4. Aluminum-clad copper
Aluminum-copper alloy is very hard, with a melting point of 64℃, which is generally composed of 97% aluminum and 3% copper. It has high mechanical properties at room temperature and high temperature, and the casting process is simple.
5. Zinc alloy
Zinc alloy is an alloy composed of zinc and other elements. Zinc alloy has low melting point, good fluidity, easy fusion welding, brazing and plastic processing, corrosion resistance in the atmosphere, and easy recovery and remelting of disabled materials.
Extended information
The anti-theft door has both anti-theft and safety performance. The qualified anti-theft door can't pry open or open a 615mm2 opening on the door leaf or open a 38mm2 opening in the semicircle of the locking point of 15mm2 with common hand tools such as chisel, screwdriver and crowbar and portable electric tools such as hand drill within 15min.
security doors are mainly divided into five types in terms of materials: steel, steel-wood structure, stainless steel, aluminum alloy and copper. Most of the copper security doors combine traditional security and entrance doors, which are advanced in style, fireproof, anti-corrosive, prying-proof and dustproof, but they are also the most expensive.
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