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Anonymous users2024-01-23The anti-theft door is divided into grades, the thickness of the Grade A security door is about 2 mm, the security door is used in fire and sound insulation, heat insulation and thermal insulation performance of aviation honeycomb aluminum or aluminum silicate rock wool, etc., like the anti-theft performance of the lock of the Grade A security door is B-level, which is what we call the advanced protection level, the Grade A anti-theft door will be more durable.
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Anonymous users2024-01-22Say that this plate is a little good and will not rust, look at the welding point to judge whether it is a galvanized sheet: there is a white galvanized sheet.
But now it's a bit expensive for a Grade A galvanized sheet door.
Security doors are now hierarchical, A. Second. Third.
Fourth.. The best is Grade A. >>>More
The levels of this kind of gate are divided into: A, B, C, and D. >>>More
I'll give you an estimate:
Grade A security door (no patent) starts at 3000. >>>More
The security door is not to see whether your door lock is strong or not. It depends on the security degree of the lock cylinder. Grade A cylinders are the most difficult to open. Class C can easily be opened by thieves with a key!
If you are just about the brand, it must be the top ten brands that are more famous (like Wang Li, Panpan, Buyang, etc.), because they are big, and the brand promotion efforts are relatively large, basically many people know, but as far as their own home use, I personally like mid-range brands (like Yanmen), because they work hard to develop, so they pay more attention to quality and after-sales, which is a personal idea. >>>More