At present, the market testing situation from the technical supervision department has reflected that the quality of the locks on the market is mixed, and the advantages and disadvantages coexist. It can be seen that some enterprises have brought products that do not meet the quality standards to the market in an extremely irresponsible attitude and disregarded the product quality in order to greet the market profits, bringing consumers troubles and troubles in life, directly Damage to the interests of consumers, the unqualified products are mainly manifested in:
Poor security <br> mutual opening rate is low <br> durability, far below the quality standards.
The production process is backward and the parts and components are poorly matched.
Poor technical and rough appearance.
The main reasons for this are:
Cut corners and use inferior materials.
It does not have basic production conditions and technology and is barely produced.
Poor quality awareness and lack of strict management.
Illegal management, but for the sake of profit.
Management confusion leads to a decline in product quality.
In order to protect the vital interests of consumers, in order to combat and prevent the sale of substandard products in the market, in addition to strict monitoring by relevant government departments, dealers and consumers should work closely together to resist inferior goods. The special "Locks Common Sense Column" introduces consumers to the basic common sense of locks, so that consumers have a basic understanding of locks and increase their understanding and understanding of locks, especially when selecting, installing and using locks. The problem is to educate, guide consumers and drive out inferior products out of the market. Below, I will report the common sense of locks in stages, hoping to enable consumers to benefit from it.
Suitable for quenched steel, tempered steel, annealed steel, cold and hard casting,malleable cast iron, hard alloy steel, aluminum alloy, copper alloy, bearing steel etc. Also suitable for surface quenched steel, surface heat treating and chemical treating materials, sheet, zinc layers, chrome layers, tin layers etc.
Hardness Testing ,Tele Brinell Hardness Tester,Brinell Hardness Test Scale,Portable Rockwell Hardness Tester
TROJAN (Suzhou) Technology Co., Ltd. , https://www.trojanmaterial.com