It is reported that hardware locks are a very important part of the hardware industry. All along, the national hardware industry marketing channels are mainly export-oriented. After the financial crisis broke out, international demand fell rapidly, and orders fell, including the lock enterprises in the country's domestic hardware companies collectively caught in a difficult situation.
In the case of rising prices of raw materials in China's lock industry, it is actually possible to reduce the price of its own products, which is a miracle for the entire hardware industry. In fact, this is related to the overall situation of the lock industry.
The technology content of the lock industry is not very high, and the homogenization phenomenon is very serious. Some locks have their own patents. Because the entry threshold is very low, the products are quickly followed. There is still a need to pay attention to the quality. Very good.
One of the most important quality indicators of the lock product is the mutual opening rate of the product, that is, the same key can open several locks, and the same lock can open the probability with several keys. At present, the world's well-known brand locks open rate is only tens of thousands of points. The mutual opening rate of domestically-made locks is also about 6,000. However, some informal and non-production strength lock manufacturers produce 30%. One, such a lock, the safety and reliability is too bad.
In the market , aluminum is similar in price to zinc, but aluminum is lighter than zinc, so that the same amount of aluminum or alloy can make more locks. The cost of the product is reduced, and it does not have much impact on the quality of the lock itself.
In the second half of 2008 to the first half of 2009, due to the extensive use of the lock industry of raw materials such as copper and zinc prices rose sharply all the way, resulting in a profit margin originally had the lock industry is not high, encountered unprecedented difficulties. A large number of small businesses have been unable to work for a long time, or are in a semi-discontinued state. It is understood that most of the traditional lock materials are zinc and copper. In order to reduce the cost, many lock companies have used the largest amount of zinc in their products, and replaced them with aluminum or aluminum alloy as much as possible.
Piston Seals and Rod Seals are important seals used in mechanical equipment. Their main function is to prevent liquid and gas leaks and ensure the normal operation of mechanical equipment. Piston seals and rod seals are usually used in hydraulic and Pressure system, such as hydraulic cylinders and Pneumatic cylinder. The quality and performance of these seals directly affect the efficiency and lifespan of mechanical equipment.
The classification of piston seals and rod seals is mainly based on their material and design structure. According to the different materials, they can be divided into rubber seals, polyurethane seals, polytetrafluoroethylene seals, metal seals, etc. According to the different design structures, they can be divided into unidirectional seals, bidirectional seals, rotary seals, etc.
Rubber seals are a common type of seal, and their main material is rubber. Rubber seals have good sealing performance and wear resistance, and are suitable for medium and low pressure hydraulic systems and Pressure system. Polyurethane sealing element is a high-performance sealing element, and its main material is polyurethane. Polyurethane seals have high wear resistance, high temperature performance and high pressure performance, and are suitable for high-pressure hydraulic systems and Pressure system. PTFE sealing element is a corrosion-resistant sealing element, and its main material is PTFE. PTFE seals have excellent corrosion resistance and high temperature resistance, making them suitable for fields such as chemical and food processing. Metal seals are a type of high-temperature and high-pressure seal, mainly made of metal. Metal seals have high temperature and high pressure performance and corrosion resistance, and are suitable for high temperature and high pressure hydraulic systems and Pressure system.
Unidirectional seals and bidirectional seals are classified based on different sealing directions. A unidirectional seal can only prevent the leakage of liquid or gas from one direction, while a bidirectional seal can prevent the leakage of liquid or gas from both directions. Rotating seal is a type of seal that can rotate and is mainly used for sealing rotating shafts. Rotary seals are divided into unidirectional rotary seals and bidirectional rotary seals.
Universal Piston and Rod Seals,Interchangeable Piston and Rod Seals,Versatile Piston and Rod Seals
DG Zhongxingshun Sealing Products Factory , https://www.zxs-seal.com