The evolution of bicycle frames has a colourful history. Initially, the Bike frame was made of wood and iron, bulky but sturdy, and bicycles were used more as a means of transport. As technology developed, iron and aluminium frames appeared, which were lighter and more durable, and bikes started to become people's sporting companions. In recent years, more and more different models have appeared, such as road bikes, BMX bikes, fixed gear bikes, folding bikes and so on. The popularity of carbon fibre frames has made bicycles lighter and faster, promoting the development of cycling. However, due to the high price, it is not yet the mainstream of the market.
We mainly provide the 700C bike frame in aluminium alloy and Cr-Mo steel for fixed gear bike and road bike. Each material has its own special features. We also have the BMX frame, it's a different style but popular and it is a very challenging project. The freestyle frame has a big difference from other bikes, it looks smaller and shorter, riders use this bike to play the BMX flatland. They are usually made of Cr-Mo for considering the necessity of the strength. We provide the frame customization service, welcome to contact us for more information.
bicycle frame,BMX bike frame,fixed gear bike frame,700C bike frame,freestyle bike frame Suzhou Jingqiyao Intelligent Technology Co., Ltd. , https://www.jingqiyaoparts.com
China Industry News reporter learned from the relevant departments, China's existing valve companies more than 6,000, of which nearly 900 above-scale enterprises, the increasingly low-end product market competition. As an important part of major technical equipment, the development of medium and high-end valves for power, petrochemical, metallurgy, and urban water supply and drainage systems lags far behind that of developed countries, especially for large-diameter ball valves for power generation, except for a few power generation plants. Also rely on imports.
Watts Water Industry Group is one of the leaders in the international water industry and enjoys a reputation as a "valve standard setter." Watts long valve is the leading enterprise in Watts Group's 2005 acquisition of valve factory in Changsha to produce large-scale valves in Asia. The company's self-developed hydraulically controlled valves and metal-elastic hard-sealing butterfly valves have been at the leading domestic level. The hydraulically controlled butterfly valve has achieved the world's largest diameter of 5.5 meters. It has successfully won the bid for the Yellow River Project of Jingtaichuan, Gansu Province, Ningxia Yanghuang Project, and Shanxi Wanjiazhai District. Yellow Project and Dongshen Water Diversion Project and other national key projects. In 2007, it won the bid of 18 butterfly valves in the South-to-North Water Diversion Project, worth nearly 10 million yuan.
On the basis of the maturity and maturity of large-scale hydraulic butterfly valve technology, the Watts valve began the development of a large ball valve in 2006. Compared with the butterfly valve, the ball valve is subjected to high pressure, high temperature, strict sealing requirements, and difficulty in technology and processing. Based on the strong capital and technical strength of the Watts Group, Long Valve Company organized a special team to tackle the problem. In October this year, it developed the first batch of three 1300QF400-WY hydraulic ball valves and was ordered by the Sunny Power Plant.
According to experts, the 1300QF400-WY hydraulic ball valve developed by Watts Valve has the function of the inlet valve of a typical turbine, and it also innovatively uses a hydraulically driven movable metal double seal structure, which effectively extends the service life of the product and maintains it. General products are more convenient. Its mobile seal position display adopts cam seal detection mechanism, which effectively solves the problems of sealing and processing of traditional indicator rod structure. The maintenance seal lock adopts the wedge-shaped locking mechanism to make the equipment more safe and reliable. The unique unit overspeed protection function is a domestic initiative. The overall technical office of the product is at the leading domestic level.
As a general large-scale high-head hydropower station and pumped storage power station turbine inlet valve, large-scale liquid-controlled ball valve has a broad market prospects. It is reported that there are more than 40 nuclear power stations under planning and construction in China. General nuclear power stations must be equipped with pumped-storage power stations. Each pumped-storage power station requires 3 to 4 liquid-controlled ball valves.
On November 24, more than 30 experts and key users from the domestic valve industry gathered at Changsha Wuhua Hotel to participate in the 1300QF400-WY hydraulic ball valve technology appraisal organized by the Hunan Provincial Economic Committee. At the appraisal meeting, the inspection department and user unit provided a series of satisfactory data to the above-mentioned ball valve products developed by Watts Valve (Changsha) Co., Ltd. (hereinafter referred to as Watts Long Valve), and the expert committee also gave “overall technologyâ€. At the domestic leading level," highly praised. This move marks the successful entry of Watts Valves into the ball valve field and once again upgraded the product structure.