How to choose a cost-effective anti-theft door?

1. From the perspective of the door panel, first of all, the structure must be uniform and reasonable. When viewed close, the door leaf has fine workmanship and the door frame welding points are uniform and dense. Use your eyes and hands to feel whether the facade is smooth and uneven. Knock with your hands to see if it is thick inside. If you hear the sound is empty, then there must be not much filling or some merchants simply do not fill it. Such a door will definitely be broken in a short time. The door of really good quality, the sound of knocking on will sound thick.

2. Check whether the gap between the door leaf and the door frame is too large or too small. The normal gap should be: the gap on the left, right and upper sides is not more than 3 mm, and the gap on the lower side is 5 mm. Push and open the door by hand, whether the switch is fluent, and there should be no jamming or collision with the door frame and make noise. Looking at the hinges, the hinges currently used for anti-theft doors generally use built-in and external hinges. The built-in hinges are suitable for external doors, and the external hinges are suitable for internal doors. For internal doors, external hinges are used. If the hinge is made of steel plate, the closed side must be welded.

Third, look at the locks and the level of the locks, it is better to be super B level, followed by B level, if it is A level, it is recommended not to buy it. Qualified anti-theft doors generally use three-position locks. Not only the door lock is locked, but the upper and lower cross bars can be inserted into the lock to fix the door. Inferior products generally do not have a three-point lock or optional three-point lock structure, and are actually not anti-theft or often fail. Most doors are also embedded with rubber sealing strips on the door frame, so there is no harsh metal collision when closing the door.