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1. Check the lock performance and structure
Select the anti-drill lock, drill bit into the keyhole, the rotation will be followed by the rotation of the drill bit rotation, can play the role of the lock is not destroyed. Locks require three-way locking structure, single door 3 hinges, double open doors 6 hinges, door and door frame plus dark lock, even if the hinge is chisel out, the door is not open.
2. The number of locks on the door and the number of jacks
It is best to choose two locks each control 2 pole of the door, even if it can be destroyed, it will delay the time. In general, a lock can control 3 to 4 rods, so that the door anti-theft performance is poor, once the lock is damaged, a few rods at the same time lose their role.
3. Look at the thickness and area of the stiffener around the lock
Tongmen from the structural design of the closed and fence-style two, no matter what kind of choice, the lock is the main parts of theft, so the lock should be the thickness of more than 2 mm cold steel plate, the height of the guard plate is not Less than 500 mm.
4. See how the process quality
Tongmen material selection is fundamental, the quality of the production process is the key. In particular, should pay attention to check whether the welding defects, such as open welding, not welding, leakage welding, slag and so on. Whether the door and the door frame with the dense, the gap is uniform, open whether flexible, all joints are foraging, paint plating is uniform and solid, smooth and so on.
5. Choose from the design
Copper doors on the market divided into luxury, mid-range, ordinary three categories. Luxury type panel material for the stainless steel plate, the main frame for the production of stainless steel square tube, flower fence are stainless steel profiles; mid-range general use of a combination of round steel and floral combination of the general type is the use of square steel, round steel and flat steel 16 × 4 mm) and other materials. Users can choose their own favorite type according to their own circumstances.
In addition, the installation of copper door, the requirements of the expansion bolts fixed, and welding with welding, fixed point of not less than 8, while 4. In terms of maintenance, should be 3-6 months to the door shaft and plunger refueling, so that it can be flexible open, but do not refuel the lock to prevent dust, affecting the performance of the door.
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