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Anonymous users2024-01-24The developer's own door does not require an anti-theft level, requires a fireproof function, the door panel is thin and the lock is poor, and because the internal filling is mostly cement lime and other fireproof functions, the door body is heavy, and the door panel is thin and the folding difference makes its service life short. The self-contained door is an engineering door, which does not meet the D standard, even if the door body is engraved with a word A or other grade steel seal, it may not meet the national standard, because the engineering door only detects fire protection standards.
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Anonymous users2024-01-23This depends on the developer, and it is generally Grade A now.
The security door is currently divided into four levels in accordance with the national standard GB17565-2007: A, B, C, D; The main distinction is to look at the thickness of the door panel, Grade A is the best, and so on; It's best to buy a good security door at home, if you are a user in Beijing, you can contact me, I am selling security doors, hehe.
The full name of the anti-theft door is the anti-theft security door, and the anti-theft level of the anti-theft door is divided into: A, B, C, D. The national standard for anti-theft doors has relevant provisions on lock cylinders, deadbolts, marks, etc., and anti-theft doors can be classified according to door type and surface material. >>>More
Introduction to the classification of grades:
One. The lock cylinder standard of the security door grade. >>>More
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Class A security door, Class B security door, Class C security door, Class D security door; >>>More
Anti-theft doors are now divided into four grades according to the GB17565-2007 standard, regardless of which brand they are, and the lock grade is divided into: A B ultra B three grades.