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 The domestic market, the use of a large amount of copper and aluminum composite radiator, light steel radiator and traditional cast iron radiator, now a detailed analysis of the three products from the following aspects: 
 First, the water quality conditions 
 One of copper and aluminum composite radiator introduction of American technology, use from the beginning in the 1940s, the country also has the use of history for more than ten years. Copper and aluminum composite radiator water quality request is not very severe, the header of the radiator tubes and heat pipes are all copper, corrosion resistance, no need to do within the anti-corrosion disposal. Thus, it has good resistance to alkaline water corrosion can. China is now the implementation of the consumption of copper and aluminum compound column-wing radiators, high alkalinity water quality conditions, if the corrosion rate of 0.005mm / analysis, may have the corrosion life of 50 years, Under this condition, leaving plenty of room for , but also to ensure that the use of life more than 30 years. 
 2, light steel radiator European technology, the water quality in harsh request, to ensure the water quality of the PH10-12, the oxygen content of ≤ 0.1 mg / L, under the conditions of use, otherwise it will show serious corrosion problems after the heating period, also request the necessary full of water and take care of themselves, and to extend its use life. 
 3, cast iron radiators conform PH7-12, non-deaerated water quality, corrosion lighter, but more rust residue, easy to infarction. 
 Second, the material aspects of 
 A copper-aluminum composite radiator with water components for the deoxidation copper tube heat local new aluminum alloy up after the hydraulic tube, the strict separation of copper tubing and aluminum fins, with plenty of the corrosion of copper tube and aluminum wing good heat dissipation effect separation of the film to the one, so that the product has a corrosion-resistant, faster heat transfer properties, higher thermal efficiency, energy-saving heating radiator one of the country to establish the Ministry introduced. 
 2, light steel radiator must cold-rolled low carbon steel, wall thickness of 1.5mm or more, but one-sided increase in wall thickness reduces the metal heat intensity, reduce the heat dissipation power and thermal conductivity, heat dissipation is less effective than copper-aluminum composite radiator. 
 , The traditional cast iron radiator cast made for the recovery of scrap iron and steel, metal heat intensity, weight, high energy consumption, low power dissipation, in violation of the target country to the introduction of energy-saving technologies, the establishment of the Ministry of elimination products is now the country. 
 , Process, appearance, the device 
 One, piece of copper and aluminum composite heating light and beautiful, safe use of the device is simple, small footprint. 
 2, light steel radiator must be stopped within the stringent anti-corrosion disposal, a prerequisite of a good job within the anti-corrosion must be advanced welding equipment, welding slag, welding tumor, no dark seam cracks, it is necessary to have advanced testing equipment, otherwise there is a leak , the overall end-of-life. And some small manufacturers is not a full range of advanced welding, internal corrosion and testing equipment, the quality of the light steel radiators can not be guaranteed. 
 3, cast iron radiator looks bulky and complex devices, many owners also change, the formation of a secondary resource Mifei. 
 , The cooling effect and metal heat intensity 
 A copper-aluminum composite radiator both radiation, convection, two cooling methods, water, balance at room temperature, the metal heat intensity in 2.2W/Kg k-about, copper, aluminum and high thermal conductivity, low thermal inertia, thermal power, related to the cooling area, with the same light steel radiators and cast iron radiator, copper and aluminum composite radiator is 2.5 times higher in the heat dissipation from the heat emission test report issued by the country testing center can prove that, while copper and aluminum composite Heating film due to water consumption and fast warm-up, fit the policy of the country of energy conservation policy is used more as a society of new energy-saving heating radiator market, the product of choice for a broad user and Design Institute. 
 2, light steel radiator as long as the appearance of radiation, water, metal heat intensity in 0.7W/Kg k about. 
 3, cast iron radiator needs renovation disposal, potentially affect the heat, its water consumption, metal heat intensity as long as 0.3W/Kg k around, do not fit the country's policy of energy saving policy. 
 Five, the price terms of 
 1, the capital of the first phase of the copper and aluminum composite radiator device slightly higher, but pleasing in appearance, without special decoration disposal, will not form secondary Meifei, the use of long life, the use of low maintenance costs due to high scrap value, and thus integrated costs are lower. 
 Light steel radiator, single-column price is slightly lower, pleasing in appearance, but the amount of water analogy heavy use of the short life of the copper and aluminum composite radiator, high maintenance costs, and thus integrated more expensive than copper and aluminum composite radiator. 
 3, the first phase of the cast iron radiator device capital is low, but the appearance is heavy, rough, necessary to cover up the renovation disposal, formation Resource secondary Meifei, high maintenance costs, now a small selection of such products. 
 VI Conclusion 
 In summary, copper and aluminum composite radiator in the light steel radiators and cast iron radiator, with a corrosion-resistant, long life, good conductor of heat, high pressure, green energy, good looks, easy device maintenance and other features. application prospects in general, is currently heating radiator industry elected to a larger amount of products. Beijing luxury steel radiator ◆ radiator manufacturers 
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