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Anonymous users2024-01-23After a long time, the door is sagging, and the surroundings are not tidy?
Take a closer look around where the card is? An extra part? If you have strong hands, use a hammer against the bottom corner of the door and move it upwards vigorously! Then observe the alignment of the lower door around the door, and it can be closed.
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Anonymous users2024-01-22There's only one way, to find someone who specializes in trivial matters.
First of all, rule out where the damage is.
Try it with the key first, to see if the deadbolt can rebound (if the key has nothing to do with the rebound deadbolt, then go directly to the next step), if the key rebounds is not a lock cylinder problem, on the contrary, a trace of twisting can not move, it can be a lock cylinder problem, if the twist half of the situation does not move, it may be a problem with the mechanical structure of the lock cylinder lock body. >>>More
Wang Li also has it, at least our spring Grade A security doors are almost all 9CM thick, the thickest is Oh.
Panpan is the national standard door, and Chapman has reached the double standard of the national standard and Europe, and the grade is higher.
Relevant experts said that the anti-theft door is in the national standard catalog of the National Standards Committee, and there are relevant standards. In 2008, the implementation of the "General Technical Conditions for Anti-theft Security Doors" (GB17565-2007), the anti-theft security level of the beam key of the anti-theft door products is divided into "A", "B", "C", "D" 4 levels, A is the highest level, decreasing in turn. The standard also requires that security doors should have permanent fixed markings. >>>More
Tell the customer about your advantages, how good to say, of course, don't be too outrageous to introduce the frame of the anti-theft door how thick the plate, how thick the door panel, in the introduction of locks. How is the anti-theft performance?