1. When choosing a lock, pay attention to the industry brand. Don't look at the price one-sidedly. You should choose a large enterprise product with the strength of scale, stable and reliable product quality, and purchase it from the hardware store of the brand agent. It is necessary to recognize whether the lock product has a factory name, a factory address, a trademark, and whether there is a qualified inspection report issued by a professional quality inspection agency.
2. The appearance of the lock should be clear, the surface is not rough, and it feels comfortable. The lock is opened and rotated flexibly, the locking device should be functional, and the feeling of failure cannot be felt when the hand is felt, and the security performance is good.
3. When selecting a lock, first pay attention to the lock that matches the opening direction of the door. Secondly, pay attention to the width of the door frame. The handle lock is not suitable for the door with the door frame less than 90mm. Generally speaking, the door lock of the house is a large luxury lock with a large panel. The thickness of the door and the lock are also an important option. It is necessary to choose the lock because of the door.
4. When the lock is purchased, the material should be moderate, and the hand should be firm and reliable. Do not use all kinds of locks made of inferior materials with low quality. The main materials of the panel and handle are zinc alloy, aluminum, precision cast stainless steel, sheet stainless steel, precision cast copper, and calcined copper. The surface treatment of the panel and the handle are mainly polishing, sandblasting, drawing, chrome plating, copper, light gold, PVD, and the like. The main materials of the lock body are cold-rolled Iron plate or stainless steel, stainless steel or copper, other parts zinc alloy or iron. There are also all stainless steel locks. The lock cylinders are mostly made of copper.
Iron
Ductile Iron Pipe,Ductile Iron Pipe Accessories,Others Iron
Fiberglass Geogrid,PVC GeomembraneCo., Ltd. , http://www.chgeotextile.com