Buy security door should grasp 3 points

First of all, to understand that a qualified security door generally adopts three-position locking, not only the door lock is locked, but also the upper and lower crossbars can be inserted and locked to fix the door. Inferior goods generally do not have a three-position locking or self-selection three-position locking structure. Special attention should be paid to checking whether there is a welding defect in the security door and whether the fit of the door leaf and the door frame is dense, whether the gap is uniform, and whether the opening is flexible.

Secondly, to check the anti-theft security door inspection report provided by the operator, the inspection results should comply with the new national standard. The new national standard will change the anti-theft security level of the security door from the original C, B, and A3 levels to A, B, C, and D. The corresponding pinyin letter codes are J, Y, B, and D, respectively. Advanced, in descending order. The new national standard has also added content that can help consumers identify the authenticity of the security door, that is, require the manufacturer to set a permanent fixed mark of the Song and gravure printing on the position of the upper corner of the hinge (hinge) inside the security door. If there is no such mark, it is an unqualified product.

Again, we must distinguish the difference between security doors and metal doors. When ordering, the operator should indicate “security door” in the trade name column to prevent illegal operators from using steel doors, protective doors, floodgates, armored doors, etc. to pretend the security door; before installation, check the physical and order samples. Whether they are the same; last but also remember to ask for warranty cards, invoices and other documents, so that timely protection of rights after a problem.

Security door

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