Fasteners are also called standard parts in the market, and they are the general term for a type of mechanical parts used when two or more parts (or components) are fastened together into a single piece. It is widely used in a variety of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools and tools, instruments, meters and supplies. According to Luo Baihui, secretary-general of the International Model Association, at present, with the development of China's manufacturing industry, fasteners, as one of the products with a large import and export volume in China, have been brought into line with international standards, and have promoted China's fastener companies to the world and promoted fastening. The comprehensive participation of enterprises in international cooperation and competition has important practical and strategic significance. The specific requirements for each specific fastener product's specifications, dimensions, tolerances, weights, performance, surface conditions, marking methods, and inspection, marking, and packaging items are specified separately in several national (industry) standards. For example, there are English, German and American systems.
Construction Hoist (also called Building Hoist, Passenger Hoist, Construction Material Hoist, Construction Passenger Hoist) are an efficient and safe means of transporting people and materials on construction site. They help increase productivity and safety, thereby saving time and money.
Construction hoist is vertical transport machinery driving by pinion and rack, mainly used on construction site for transportation of personal and materials. As a permanent or sub-permanent external elevator, it also applies to store house, dock, high tower, high chimney, etc. There are single cage and double cages hoist. According to the need gets rid of one cage of double cages the hoist will be changed to single cage hoist. SC construction hoist is equipped with reliable electrical and mechanical safety device. It is efficient and safety vertical transporting equipment.
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The mechanical industry is one of the main users of fasteners. Because China has a relatively late understanding of the importance of mechanical parts in the machinery industry and lack of investment for a long time, the entire industry has a poor foundation, a weak foundation, and weak strength. In particular, with the increase in the level of China's host computer, bottlenecks that mechanical components lag behind the host are becoming increasingly apparent. In recent years, although the state has given certain support in the aspects of technology introduction, technological transformation, and scientific research and development, there is still a small gap compared with the current market demand and foreign standards. The specific manifestations are: low product varieties and low levels. , The quality is unstable, early failure rate is high, and reliability is poor.
Fasteners are the main basic parts of the machinery industry. The development of the machinery industry also places higher demands on fastener products. Luo Baihui believes that the current domestic standard fasteners have been oversupply, while high-end fasteners (high temperature, special-shaped, titanium-plastic composite, special performance fasteners, etc.) are in short supply, and they must be imported. The State Bureau of Machinery classified "ordinary standard fasteners" as restricted development products and "high-strength special-shaped fasteners" as the current encouragement to develop products. High-strength fasteners With the improvement of the industrialization level and technological progress of the country, the usage has gradually increased.
According to the solution, during the 12th Five-Year Plan period, the quantity of engineering machinery such as loaders, excavators, and road rollers will reach 6 million units, and the annual sales volume will be around 50,000 units. According to this estimate, the annual demand for high-strength fasteners is about 20,000 yuan. ~ 3 million tons. The basic parts represented by fasteners are not only the basic industries of China's equipment manufacturing industry, but also the important foundations for various fields of national economic construction. During the period of the 12th Five-Year Plan period, the industry must rely on new advantages such as technological progress, quality improvement, and product cost-effectiveness to achieve sustainable development while maintaining its partial cost advantage. It is estimated that by the end of 2015, the total output of the industry will reach 7.5 million to 8 million tons; under the overall situation of expanding exports, the export products will assume a fluctuating growth trend, and the average annual export growth rate is expected to be 8% to 10% during the 12th five-year period. By 2015, the total export volume of the industry will reach 30 billion yuan.
Domestic fastener manufacturers of all sizes should look to the future. Key national construction projects such as "high-speed rail," "aerospace," "highways," and "airports," are providing an opportunity for tight-to-high-end enterprises. Boeing plans to add 3,400 new planes in the future. The National Development and Reform Commission has invested 800 billion yuan to build rail transit in 6 cities. According to 36 plans to build urban rail transit project cities, by 2020, the new operating mileage of urban rail transit will reach 6560 kilometers, and the demand for rail fasteners will reach 55 -7 billion yuan. These large-scale projects will greatly increase the demand for high-strength fasteners such as high-strength fasteners and titanium alloys. It is not impossible to take off the “low-end†label.