In 2010, China's construction machinery is supported by the support of national policies. From the data analysis of various research institutions, China has made a breakthrough in 2010 since China became a world construction machinery power in 2007. In the second half of the plan, the “expanding domestic demand” policy will be launched, and the growth rate of China's construction machinery is expected to continue to grow in 2011.

First, China's construction machinery in 2010 is gratifying

According to statistics, as of October 2010, China's construction machinery import and export trade volume was 15.09 billion US dollars, an increase of 46.4% over the previous year. From January to October 2010, China's construction machinery imported a total of 4.2 billion US dollars, an increase of 61.5% over the previous year, accounting for 62% of total imports, down 2.4 percentage points over the previous year; parts imports of 2.59 billion US dollars, compared with The annual increase was 79.2%, accounting for 38% of the total imports.

According to statistics from January to November 2010, the major types of construction machinery in China have shown significant growth. Excavator sales increased by 76.4% year-on-year, bulldozers increased by 65.3%, road rollers increased by 56.4%, loaders increased by 54.8%, and graders increased by 41.0%. In the regional market, the rapid growth of China's construction machinery in the western region is particularly gratifying. From January to November 2010, the sales of loaders in Inner Mongolia and Xinjiang exceeded 10,000 units.

1. China Construction Machinery Brand Warfare

On August 17, 2010, the US Federal District Court ruled that Jiangsu Shenxi Construction Machinery Co., Ltd. won the infringement case against American Saucer and Daktai Group. The first international intellectual property lawsuit in China's aerial work machinery industry was The successful victory of the Chinese company was closed.

2, China's construction machinery technology warfare

In 2010, China's construction machinery industry companies have increased investment in scientific research, the number of research and development centers is increasing, and the scientific research strength is continuously strengthened. At the end of October, with the approval of the Ministry of Science and Technology, Zoomlion established the National Concrete Machinery Engineering Technology Research Center, which is the first national engineering technology research center in China's construction machinery industry and also the concrete machinery field. On December 16, the foundation stone laying ceremony of Jiangsu Xuzhou Construction Machinery Research Institute was held. With a total construction area of ​​89,800 m2 and a total investment of 730 million yuan, the institute will build 10 system technology test labs, comprehensive R&D bases and high-tech talent training bases.

3. Increased concentration of Chinese construction machinery

In 2010, the sales volume of China's construction machinery market exceeded 400 billion yuan, of which Xugong, Zoomlion, and Sany's three companies all sold more than 50 billion yuan, and Xugong is expected to reach 65 billion yuan. The sales of Liugong, Longgong, Shantui and foreign-funded enterprises such as Komatsu, Doosan, Hitachi and Kobelco also increased significantly during the year. In 2010, the sales of the above ten companies accounted for more than 1/2 of the total sales of the Chinese construction machinery market.

4. China's construction machinery industry is regulated

At present, China's construction machinery has repeatedly embraced development opportunities. In the spring of construction machinery, a fair competitive environment is an essential element for China's construction machinery industry to move from a manufacturing power to a manufacturing power.

On October 27-29, 2010, the Second Council of the 4th China Construction Machinery Industry Association was held in Chengdu. Four of the eight proposals of the conference were closely related to the standard competition environment.

As early as 2006, at the Second Council of the 3rd China Construction Machinery Industry Association, China Construction Machinery Industry Association has initiated and organized major construction machinery enterprises to jointly develop the "China Construction Machinery Industry Self-discipline Convention."

Second, China's construction machinery market has great potential for mining

1. Infrastructure provides an opportunity for the development of China's construction machinery

At present, infrastructure construction is the main factor driving the development of China's construction machinery industry. Taking the construction of hydropower and water conservancy as an example, the South-to-North Water Transfer Project is under construction. The preliminary plan for the 12th Five-Year Plan is to add 63 million kilowatts of conventional hydropower installed capacity by 2015, adding 12 million kilowatts. With pumped storage installed, the growth rate of hydropower construction will exceed 60%. After experiencing the drought in the five southwestern provinces last year, the installed capacity of Sichuan and Yunnan accounted for 89.2%. At the same time, water conservancy construction in the main grain producing areas has become the focus, with a growth rate of about 240%.

Excluding the construction of water conservancy and hydropower, the construction of nuclear power and wind power will also become the main force of China's construction machinery domestic demand market. It is estimated that by 2020 China's energy construction will invest 8 trillion yuan.

In addition, China's railways, highways and some housing construction have also directly stimulated the development of China's construction machinery market. During the "Twelfth Five-Year Plan" period, the state will invest 10 trillion yuan in transportation, which can stimulate China. Sensitive nerves of construction machinery.  

2. The international market provides a stage for Chinese construction machinery

On December 16, Yang Baode, deputy secretary general of the Construction Machinery Association, said at the "2011 Investment Strategy Annual Meeting" held by National Securities. During the "Twelfth Five-Year Plan" period, the annual growth rate of China's construction machinery industry will reach 17%, and the income will reach 900 billion yuan.

He said that China's construction machinery sales accounted for about 1.5% - 2.5% of the country's fixed asset investment, which is the most powerful guarantee for the continued growth of the construction machinery industry in the next 20 years.

In addition, exports will be another powerful engine for driving the growth of China's construction machinery industry. China's construction machinery products are more cost-effective than Europe, America and Japan, and the future prospects in Africa, America and other places are broad. He predicted that China's construction machinery exports will reach 15 billion US dollars next year.

3. New energy equipment is another highlight of the future growth of the machinery industry

In 2011, China's construction machinery benefited from fixed asset investment, which is still the fastest growing segment, and new energy equipment manufacturing will usher in new growth points under the guidance of the National Twelfth Five-Year Plan, especially nuclear power equipment and wind power equipment.

China's installed nuclear power capacity ratio is less than 2%, which is still quite different from the global average of 16%. This has also become an important driving force for the development of nuclear power. According to China's current long-term plan for nuclear power, the proportion of nuclear power in China's total installed capacity will reach 4%-6% in the future by 2020. Corresponding to the installed capacity of 75 million kilowatts of nuclear power, it is about 9 times of the total installed capacity of nuclear power, and the development space is worth looking forward to.

4. Some of China's construction machinery products are leading the way.

Due to the sustained and rapid development of the Chinese economy, there are still huge development opportunities in the Chinese construction machinery market. Among them, the three major products of the construction machinery industry, such as scraping machinery, concrete machinery and excavation machinery, still take the lead in the market.

Of course, at present, the small-scale construction machinery represented by multi-functional small hydraulic excavators in China accounts for the proportion of the entire construction machinery product market. Compared with developed countries and regions such as North America, Western Europe and Japan, there is still a big gap, but at the same time, this It also implies a signal to the market that if the level of China's national economic development continues to increase, the market space for other small construction machinery is still large, because the labor cost is gradually increasing, and the growth rate of this type of Chinese construction machinery will also be closely related to the national GDP. .

Third, comprehensive analysis: China's construction machinery is all the way in 2011

In 2009, the sales revenue of China's construction machinery industry exceeded RMB 310 billion, achieving a growth of more than 12%. In 2010, China's construction machinery industry has been at a relatively high growth rate since the beginning of the year. On the one hand, the demand in the domestic market is relatively high. In 2009, the investment of 4 trillion yuan is still playing a role. On the other hand, the international financial crisis has eased and the export volume has been steadily increasing. rise. From January to June 2010, China's construction machinery industry completed a total output value of 214.589 billion, an increase of 60.46%.

With the active technological innovation of China's construction machinery industry, the market has performed strongly. At the same time, breakthroughs have been made in the manufacturing of equipment such as 1,000-ton crawler cranes, high-power bulldozers, rotary drilling rigs and shield machines; The machine has risen against the trend and gradually entered the ranks of high-end products. The market share has increased steadily. China Construction Machinery has been bullish all the way in 2011, just as the Deputy Secretary-General of the Construction Machinery Association Yang Baode spoke at the 2011 Annual Investment Strategy Conference held by National Securities. During the "Twelfth Five-Year Plan" period, the annual growth rate of China's construction machinery industry will reach 17%, and the income will reach 900 billion yuan. ”
 

Piston Seal NBR

Installation points of piston seals:

1. Make sure that the cylinder barrel has a lead-in chamfer; if not, please use a mounting sleeve.
2. Deburring and chamfering or rounding of sharp edges to cover the threaded end of the screw.
3. Remove machining residues like chips, impurities and other foreign particles, and clean all parts.
4. It will be easier to install the seals if they are oiled or greased. Compatibility between seal materials and these lubricants must be observed.
Do not use greases with solid additives such as molybdenum disulfide or zinc sulfide.
5. Use installation tools without sharp edges

It is recommended to use the installation tool, if it is not possible to use the installation tool to complete the installation, be sure to observe the following points:

1. Use oil, water, or use a hot air blower to heat to 80 ℃ to 100 ℃ (about 8~10 minutes, so that it expands and softens, and then it will shrink by itself.
shrunk to original shape) is easier to install.
2. Using a tool without sharp edges, expand the sealing ring.
3. Use a separate recovery tool to complete the leveling of the seal ring, or use a cylinder with an introduction chamfer to level the installation in an open groove. Installation in an open groove is very simple, and the installation sequence is the same as that of the seal. The configuration is the same. During installation, the seals should be flat, and no storage is allowed.
in twisting. During the final installation (before the piston is loaded into the cylinder), the elastomer- or spring-forced seal must be leveled and rounded to prevent the seal from being cut or bitten. This can also be achieved by using a cylinder barrel with a sufficient length of lead-in chamfer or by using a levelling sleeve.

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