Carbon Steel Spiral Fin Tubes for Economizer We can manufacture highfrequency welded spiral fin tubes  heater exchanger which are widely applied in electricity, petroleum, chemicals, and pharmacy industry. For example, economizer, air preheater, steam air heater, gas heater, liquid heater, steam heater, cooler, and flue gas heater. Structure: consisted of a series of spiral finned tubes, the headers of inlet and outlet, bend, frame and other auxiliaries Structure arrangement: in line/staggered arrangement The heat transfer energy is more than 6-10times higher than the bare tubes. Tube material: seamless steel, carbon steel Fin Material: Carbon steel; stainless steel Accessories  and detailed pictures: Description : High frequency welded spiral fin tubes are made by high frequency welding crabon steel or ND steel belt  to the  carbon steel or ND steel . tubes. ND steel spiral steel is better than cabon steel spiral tubes in terms of corrosion resistance. So ND steel spiral tubes are maind applied for heat exchanger under environment expposed to corrosion. 1. The equipment body can be designed into many modules  to ensure the long term and stable running; 2. The low temperature economizer manufatured by our company can guarantee the wall temperature is 5-10 ºC higher than the acid , and flue outlet temperature is 10-15 ºC higher than the wall surface temperature 3. Wall surface temperature can be adjusted according to the boiler load and fuel changer to avoird corrosion under low temperature 4. Changer the DCS system of the existing boiler to achieve the auto and remote control by computer Our company Our Products: utility boiler, biomass boiler, heat recovery boiler and boiler parts, such as enamel tube air preheater, low temperature economizer, water wall, super heater and header, etc.
In the past, the use of magnesium alloy die castings was relatively small, and now it is slowly increasing. Because magnesium alloys have the characteristics of low density and strong rigidity, many parts of shells and brackets use magnesium die castings. For example, the fast-developing mobile phones and notebook computers in recent years often use magnesium die casting for the support frame and the back shell. However, compared with aluminum alloy die casting and zinc alloy die casting, the cost of magnesium alloy die-casting will be relatively high.
The melting point of magnesium alloy is relatively low, and it needs effective gas protection during die casting, which is easy to oxidize and burn. Therefore, the professionalism of die casting is relatively strong, and the requirements for die casting personnel are generally relatively high. SCZY has professional and technical personnel for die-casting magnesium alloy products to ensure the quality of the products. Including one-stop services such as precision CNC machining and surface treatment provided later.
Magnesium Die Casting,Magnesium Alloy Die-Cast,Magnesium Alloy Die Casting In Automobile,Magnesium Alloy Die Casting Processing,Magnesium Die Casting Parts Shenzhen SCZY Technology Co.,Ltd , https://www.szsczyltd.com
IntroductionÂ
The spiral fin tube economzier is a newly type heat transfer equipment, consisting of spiral fin tubes to overcome the serious abrasion and short service time.
Technical specifications
High-frequency welded helical finned tube is a highly efficient heat transfer component, it consists of steel fins wrapped helically around steel pipe, and continuously welded using the high frequency electric current welding process so as to reduce the flow resistance and the metal consumpition, improve the efficiency of heat transfer equipment and operating reliability.
Spiral fin tube specifications
Unit: mm
Base tube OD
25-159
Base tube wall  thicknessÂ
2-8
Fin thickness
0.8-2
Fin height
10-30
Fin tube pitch
5-20
Fin tube length
≤1000
Application
Main technical advantages of our low temperature economizer 
Shandong Hengtao Group, founded in 1995, is located in Gaomi City, Shandong Province. Hengtao Group has 470,000,000 RMB of total registered capital, 1,400,000 square meter of land coverage, about 2000 employees and over 3 billion RMB of total assets.Â
Customer visit and certificates
We have ISO 9001, ISO 14001 certificates.
We conform to ASME standard.
 