The lock material on the market basically divides into stainless steel, copper, zinc alloy, iron steel and aluminum. Stainless steel, with good strength, strong corrosion resistance and constant color, is the best lock material. Copper is more general, superior mechanical performance, the price is more expensive than the price; High - quality zinc alloy is strong and anti - corrosion, easy to form.
General surface treatment has three kinds of electroplating, spraying and coloring, through these surface treatment can form a protective film on the product, play the role of anti-corrosion and anti-rust, at the same time make the product more beautiful and durable, can directly measure the quality of the product. Good quality locks, generally by electroplating treatment, coating moderate, very uniform, bright colors, no bubbles, rust and oxidation signs.
Look at functional design and key components
There are many kinds of locks. The choice of locks depends on where they are used. Large brands with high quality requirements have very detailed product categories for different functional requirements, such as aisle locks, bathroom locks, storage room locks, front door locks, etc. See a standard to carry out foreign to hardware lock to have very strict standard to set, the quality that imports a product so is opposite also a few more advantageous.