Non-standard door of choose and buy should focus on when looking in anti-theft performance and quality, should be checked from the following several key parts:

　　(1) check the door lock structure and performance

　　Select drilling locks, drill into the lock hole, when rotating bit locks will be synchronized with the rotation, can play the role of locks are not destroyed. Locks for the three parties a locking structure, three single door hinges, six double door hinge, door leaf and door frames warded lock, even if the hinge and chisel out door won't open.

　　(2) the door locks on the quantity and the pole number

　　Had better choose two locks the control the door of the bar, even if can be destroyed, will delay the time. Generally speaking, a 3 or 4 thong locks can control rod, the door anti-theft performance is poorer, once the locks is damaged, a few thong rod at the same time.

　　(3) the reinforcing plate thickness and area around the locks

　　Non-standard door points from the structural design of enclosed and fence type two kinds, no matter choose which kind of, main parts of the lock is theft, so locks protecting core board should be more than 2 mm thickness of steel plate, cold core board height not less than 500 mm.

　　(4) the process quality

　　Non-standard door material selection is fundamental, craft quality is the key. Especially should pay attention to inspect for welding defects, such as welding, without welding, welding leakage, the phenomenon such as slag. To see whether cooperate with door leaf and door frame is close-grained, gap is uniform, open is flexible, all joints are sealed, firm paint electroplating is uniform and smooth, etc.

　　(5) selected from the appearance design

　　On the market in non-standard door luxury, mid-range, common three categories. Luxurious panel material is stainless steel plate, the main frame for the stainless steel side controls, ornamental design for stainless steel fence profiles; Intermediate model generally adopts fangyuan steel and ornamental design of combining the combination form; Normal use square steel tube, round steel and flat steel (16 x 4 mm), and other materials. The user can according to their own situation to choose their favorite type.

　　In addition, non-standard door, installation requirements by expansion bolt, and die with welding welding, fixed point of not less than eight, four. In the aspect of maintenance, should be every 3 to 6 months to insert gate shaft and rod refueling, can make its flexible open, but do not go into the locks, touch dirt in case, the impact on the performance of the door.