Anti-theft security door of choose and buy the first thing to look have security doors security level identification, is no ordinary steel door. The second level of security prices vary. To make when buying businesses in the what is the door of choose and buy, indicated in the invoice, what level. If it is outdoor use of security doors must with dealers, because ordinary paint with 1 years even it will fade away in the outdoor paint rust.
In addition, in use process, the use of security locks son also often appear problem, if the lock open is not flexible, don't add any grease lubricator, filling the right methods should be in the lead cut into crumbs into the keyhole for lubrication. If it is mechanical part open is not flexible can remove the lock body shell filling some butter lubrication.
Quality control staff also suggests that each function of security door locks has its USES, the lock tongue must be locked in place, it can prolong the host technical opening time, so as to ensure the safety of users at home. In addition, the lock when the choose and buy should choose the key tooth and tooth drop slightly bigger, in order to reduce the mutual opening rate, increase the technical opening time.
General according to the product damage resistant time length, thickness of plate and other indicators of anti-theft security door is divided into four levels: a, b, c, d.
When purchasing a security doors, many businesses as their product is b or c, the level of security door what mean? How to distinguish? Level of security doors refers to their level of security, the security level of security doors points a, b, c three kinds of commonly. The highest class c anti-theft performance, mainly used in military, financial and cultural relics departments particularly high security requirements. A grade b second, minimum. Now on the market sales of civilian security doors are a and b. Grade a anti-theft lock open devastating time not less than 15 minutes, the open time of not less than 1 minute for qualified technical. And b anti-theft lock open devastating time for 30 minutes, the technical open not less than 5 minutes. Class c anti-theft lock open devastating time for 45 minutes, the technical open not less than 10 minutes (against the technical open time refers to the professional and technical personnel to unpick the lock time).
Only with production and an introduction to the seller, of course, is not enough, it is important to check the related details file. Security door is every family's life and property safety of important products. Legal production and distribution of security doors should possess the following two conditions: (1) must have the district public security bureau technology to prevent the production and distribution of license from the management office. (2) the production and distribution of security doors must be authorized by the regional bureau of technical supervision and the public security organs in accordance with the law of product quality supervision, inspection test qualified.
