How to identify the quality of security doors
Method 1: formal qualified anti-theft door will have a trademark (see the trademark content of all you, manufacturers, qualified quality, etc.) Method 2: good security door thickness thicker than the average, you can beat down to listen to the sound , Whether it is dense, the weight can also be distinguished; look at the thickness of the school about the two most common the most common
Anti-theft door points several, if it is steel door you just open the cat's eye or remove the lock to see the thickness of the steel plate on the line! Other security door you flower lambs barley Karma cut the public stem as long as the weight on the line
① lock requirements with three-way locking structure, six leaves, doors and windows and door frame plus dark lock, even if the leaves were pry off, the door is not open. ② whether it is closed or the fence of the lambs of the barley barley bar tied to the public-style anti-theft door, heavy than the light is good, because the heavy steel and more coarse, good destructive resistance. ③ lock around the radius of 100mm should be more than 1.5mm thickness of the steel plate protection, the area such as less than 200 square centimeters or less than 1.5mm thickness, easy to be destroyed, the quality is not good. ④ the diameter of the door chain and the level of the foot, the hinge is also one of the parts easily broken, thick chain than the fine, the height of the foot should be more than 2mm. ⑤ the thickness of the fence, the connection point is very critical. Fence diameter of 14mm or more, the connection point a little more, not easy to be destroyed. In addition, no solder defects, door frames and door gap uniformity, opening and closing flexible, joint seal, etc .; plating solid, smooth, no defects.
