At present, the global demand for fastening castings is mainly concentrated in the three major markets of North America, Western Europe and Asia. Its annual demand is more than US$10 billion, and it is also the main market for fastener exports in China. With the EU, Mexico, the United States, Russia and other large-scale anti-dumping arbitration and investigation of China's fastener industry, China's fastener exports have been pushed to the cusp. Due to the unreasonable structure of traditional fastener products in China, the low product grade and low added value have caused prices to be difficult to increase. At present, domestic common standard fasteners have been oversupply, and high-grade fasteners (high temperature, special-shaped, titanium-plastic composite, and special-performance fasteners) are in short supply, and they must be imported. According to the author's understanding, in February of this year, Jiaxing, China's fastener industry, has seen its export volume drop by nearly 50%. Although the global financial crisis and overseas anti-dumping actions have caused a substantial drop in the growth rate of China’s fastener exports, we must also realize that it is the irrational product structure of our fastener industry that will result in the current situation. And upgrading is an inevitable choice for Chinese fastening companies. Although the cost will increase after the product is upgraded, the increase in product prices can completely offset the increase in costs. According to the author's understanding, fasteners for special industries have advantages, such as fasteners used in the aviation, military, and railway industries. The special nature of these products determines the superiority of their prices, so domestic fastener companies can Efforts to develop such markets. High-strength fasteners With the improvement of the industrialization level and technological progress of the country, the usage has gradually increased. The State Bureau of Machinery classified "common standard fasteners" as a restricted development product, and "high-strength special-shaped fasteners" as the current encouragement to develop products, precisely in order to promote the development of high-strength fasteners. At present, there are tens of thousands of fastener companies in China, but only 60 of them have an annual output value of more than 100 million yuan. Compared with overseas companies, our strength is obviously weaker. Therefore, China's fastener manufacturing enterprises must step out of the old path of low-cost competition, and then pay attention to brand building and enhance the company's core competitiveness.
Types of air preheater in a boiler
The air preheaters are classified into two types based on their features and construction. These two types of air preheater are
Recuperative or Tubular type air preheater
Regenerative or Rotational type air preheater
Recuperative or Tubular type air preheater is further classified into two types, they are
Horizontal tubular type
Vertical tubular type
Regenerative or Rotational type air preheater is also classified into two types they are
Rotating baskets (Ljungstrom)
Rotating hood (Rothemuhle)
Air Preheater In Boiler Diagram,Preheater In Boiler,Function Of Air Preheater In Boiler,Steam Air Preheater Jinan Yuanda Power Equipment Co.,Ltd. , https://www.jnyuandaboilers.com
Air preheater is one of the most important accessories in modern boilers. Air preheater is commonly found in all modern boilers. To increase the efficiency of the boiler accessories like air preheater is used in the boilers.