The finned tube is to improve the heat exchange efficiency. By adding fins on the surface of the heat exchange tube, the outer surface area (or inner surface area) of the heat exchange tube is increased, so as to achieve the purpose of improving the heat exchange efficiency. Such a heat exchange tube . Usually used for heat exchange between liquid and gas.
Finned tube is a heat exchange element. As a heat exchange element, finned tubes usually work under high-temperature flue gas conditions for a long time. For example, the finned tubes usually used in boiler or harsh environments, high temperature and high pressure, and in a corrosive atmosphere. This requires that the finned tubes should have high anti-corrosion properties, Anti-wear properties, lower contact resistance, higher Stability and anti-dusting ability.
There are many types of finned tubes, and new varieties are constantly emerging. According to the classification of processing technology, there are extruded fin tube; high frequency welded finned tubes; rolled formed finned tubes; suit formed finned tubes ; cast finned tubes; tension wound finned tubes; Inserted tubes.
According to the shape of the fins, there are square finned tubes; circular finned tubes; spiral finned tubes; longitudinal finned tubes; corrugated finned tubes; spiral serrated fins Helical Serrated Finned Tubes; pin-shaped finned tubes; integral plate-shaped finned tubes; inner finned tubes.
According to whether the fin material of the finned tube is the same as that of the base tube, it can be divided into: single metal finned tube, bimetallic composite finned tube.
Single metal finned tubes are classified by material into copper finned tubes; aluminum finned tubes; carbon steel finned tubes; stainless steel finned tubes; cast steel finned tubes.
Finned Tube,Extruded Fin,Brown Fin Tube,Longitudinal Finned Tube Guangdong Jiema Energy Saving Technology Co.,Ltd , https://www.heatexchangerjiema.com
The city's industrial economy showed a good momentum of accelerated growth. The value-added industry above the one-hundred-thousand-million-yuan mark increased by 31%, and surpassed the province’s average growth rate for the first time in three years—this information from the economic situation in the first three quarters of the city gave way. People are excited.
This information can explain a lot of reasons. One must mention is the development of the whole vehicle in our city—choose independent development direction and realize the independent development path.
Looking at the Shiyan automobile industry, there is a dialectical reason: The entire vehicle company and parts and components company is actually a benefit community. When vehicle manufacturers develop new products, component manufacturers can not only reduce the manpower and material resources of vehicle manufacturers, but also shorten the development cycle, and at the same time can form a close-knit, coordinated operational partnership with the vehicle manufacturers. Group advantage. Vigorously develop the vehicle production to expand the market space for auto parts, and vigorously develop parts and components to create conditions for the entire vehicle, which is conducive to the development of the intensive and highly connected automobile industry chain in Shiyan City, enlarges and strengthens the auto industry, and consolidates the status of Auto City.
However, in the past, Shiyan rarely talked about the development of vehicles. And precisely, we have always had a unique advantage in making cars -
The first is the charisma of the Dongfeng brand. Followed by the supporting capabilities of the Shiyan automobile industry: to engage in a new model, one month can be completed here, in other places, I am afraid that three years will fail. There is everything in the tooling and molds here, and the new car comes out. The third is rich human resources: ready-made automotive industry workers, come to the call, to the competent. Which same-level city has so many ready-made car skilled workers?
In fact, Shiyan has long been staring at the vehicle.
After years of development, Shiyan Economic Development Zone has become a reality. At present, there are six types of vehicles, including off-road vehicles, micro-offers, micro-cargoes, passenger cars, various types of modified vehicles, and dedicated passenger car chassis.
Do not believe? When you go to Dongfeng Luan Vehicle Co., Ltd., you can see the full range of Dongfeng Xiaokang, like the assembled soldiers, ready to go.
Some people liken Dongfeng Xiaokang as a dark horse in the cracks. When the project was launched, there were more than 3 million micro vans in the country. Wuling, Hafei, Chang'an, and Changhe’s “four heroes competing for hegemony†seem to have no market share. However, Dongfeng Xiaokang is a bloody road, and its market share is still expanding rapidly.
The achievements of Dongfeng Xiaokang have proved a truth: to integrate automotive resources and activate industrial advantages. The road to complete vehicles is the road to revitalizing the car city.
Currently, Dongfeng SUV Co., Ltd., Dongfeng Luan Automobile Co., Ltd., Dongfeng Special Steam Co., Ltd., Shiyan Bus Co., Ltd., Dongfeng Special Special Vehicle Factory, Hubei Century Zhongyuan Group Co., Ltd., Hubei Shenying Automobile Co., Ltd., etc. Vehicle manufacturers have become bright spots.
The good situation of the development of the whole vehicle also proves a truth: If you plan ahead, you can recognize the opportunities and seize the opportunities.
As early as in the summer of 2002, the Shiyan Economic Development Zone analyzed and evaluated the possible situation after the joint venture between Dongfeng and Nissan, and studied and formulated prevention programs and countermeasures. After Dongfeng Nissan’s joint venture, Dongfeng Company implemented medium-term business development plans, global procurement, and the relocation of Dongfeng headquarters. Affected by this, some Dongfeng’s specialized plants and local companies also gradually moved out. Under such circumstances, the Shiyan Economic Development Zone proposed a new path of "walking on two legs and opening up two market developments." They rely on Dongfeng Special Automobile Factory and Shenying Automobile Refitting Plant to further consolidate and improve the production capacity of modified vehicles, increase varieties, improve quality, and expand the market; use the workshop of the Condor Refining Factory to develop and produce buses and luxury passenger cars; Industrial Co., Ltd. as the carrier, the introduction of Chun'an Chongqing company, focusing on research and development of mini-vehicles; the introduction of Hunan Hunan Torch Investment Corporation, to fully promote the development of "Horse" off-road vehicles; to rely on Hubei Century COSCO Group, the introduction of Australian and Dongfeng company technology, research and development Intelligent cement mixer car......
The overall development of the vehicle is in good condition and parts are also impressive. Dongfeng Bus Chassis Co., Ltd. actively responded to the unfavorable situation of the overall decline in production and operation of Dongfeng Commercial Vehicle Co., Ltd., ranging from not relying on and actively exploring the domestic market, has successively developed markets such as Henan, Shandong, Hebei and Xiamen; Dongfeng Oil Products Company “DO-785W†The "90 gearbox special oil" project was approved by the National Ministry of Science and Technology. Baiyexing's "LED Auto Luminescent Lamp" project and Pioneer Mould Company's "High-strength board cover mold production" project were included in the provincial science and technology project industrialization plan; The company's "vehicle intelligent alarm", Saichen Jixing "air-air cooler" and Beili "automotive engine respirator" and other projects applied for the 2007 provincial science and technology research plan.
Nowadays, the city has basically formed an automotive industry system consisting mainly of Dongfeng series of parts and components, special vehicles, and modified cars. It has the capacity to produce 250,000 auto parts and 130,000 vehicles annually.
"Catch the automobile industry, we must first grasp the vehicle, do not grasp the vehicle, the local automobile industry will not have competitive strength." Municipal Party Committee Secretary Zhao Bin repeatedly emphasized this point.
“To take full advantage of the city, use all available resources, mobilize all positive factors that can be mobilized, and make every effort to promote the development of vehicle production in Shiyan.†The mayor Chen Tianhui repeatedly stated this attitude.
Further grasping the vehicle, grasping the key assembly, and grasping key components and parts, taking the vehicle as the leader, establishing industrial clusters, and taking the road of scale and intensive development to form a more complete industry for vehicle development and spare parts development. Chain, business group.
This is the idea and outlet for consolidating the status of the "automobile city"!