Choose the safe door to guard against theft and stay at home more assured

Anti-theft safety door is the necessary household goods in most families. Rational selection of anti-theft safety door is not only guaranteed in safety, but also more convenient in daily use.

Anti-theft safety doors are manufactured according to national standards, steel doors, metal doors and entrance doors are manufactured according to enterprise standards, so it becomes the first step for consumers to identify anti-theft doors. Open the door to see if there is a sign on the corner of the inner door, pay attention to the "security door against theft". If there is no such sign or sign with metal doors, steel doors and access doors, it is not a security door against theft.

In addition, the anti-theft security door should have a permanent anti-theft security level mark. The anti-theft safety grade mark is composed of its Chinese code and plane circle. The Chinese code should be located in the plane circle with a diameter of 25mm. Chinese grade signs A, B, C and D are permanently fixed in the upper corner of the inner hinge edge in the form of Song-style gravure prints, at a height of 1600 mm (+100 mm) above the ground. If the door is not stamped, it will not meet the requirements of national standards. Obviously, this is not a security door against theft. It should be noted that locks are the most important part of the security performance of anti-theft safety doors. Anti-theft safety door grading locks are also graded. Class A is a parallel lock tongue with flat keys and drip grooves on it. The anti-lock technology can be opened for less than 5 minutes. Class B is parallel lock tongue, the key is semi-circular, with special-shaped alveolus on it. The anti-technical opening exceeds 5 minutes and meets the national standard. Super B is a T-shaped rotating lock tongue. It rotates 90 degrees automatically after locking. The core of the lock is controlled by two rows of marbles rotating step by step. The key is bilateral double teeth, which is equivalent to two keys kneading into one. The anti-technology is opened for more than 270 minutes.

Key words: Tianjin anti-theft door manufacturer, Tianjin non-standard door, Tianjin building door

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