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Quality standard of security door
2011-7-14Security door have three standards.
1.Doorframe:"National security door standard" requirements,the thickness of doorframe steel plate must be 2mm or more.Because the security door is heavy,the doorframe is used to supporting the door.If the steel plate is thin,doorframe will deformed easily.
2.Panel:According to the "National security door standard",the time of use destruction tools to open security door not less than 15 minutes. Regular manufacturers use 1 mm steel plate generally.
3.Filler:The third factor determine the security door performance is the filler's select.Good quality security door have welding steel pipe inside door it can make strong degree increase 20%.While the external door was destroyed,it still can support and prevent.
In addition,qualified security door should be fill specific fireproof and insulation materials inside.
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