With the arrival of the golden season of home improvement, the finned tube radiator market has ushered in another sales peak. As the whole finned tube radiator market is mixed, the quality and performance of the selected finned tube radiator will be directly related to the safety, economy and decoration of its use. Therefore, consumers must be careful and careful when choosing finned tube radiators to determine the pros and cons.
General residential finned tube radiators are divided into water heating and electric heating finned tube radiators, including vertical finned tube radiators, floor finned tube radiators and ceiling finned tube radiators.
The new heating finned tube radiator is divided into steel finned tube radiator, aluminum alloy finned tube radiator, copper finned tube radiator, copper-aluminum composite finned tube radiator, steel-aluminum composite finned tube radiator,and stainless steel finned tube radiator according to different materials.According to the appearance characteristics of the product, it is divided into column fin tube radiator and row fin tube radiator.According to the heat dissipation method, it is divided into radiant finned tube radiator, convection finned tube radiator and so on. The commonly used new heating fin tube radiators are steel column fin tube radiator, steel row tube fin tube radiator, aluminum alloy column airfoil fin tube radiator, copper-aluminum composite column airfoil fin tube radiator.
Due to the characteristics of the material itself, aluminum alloys are resistant to acid and oxidation, but are prone to alkaline corrosion. Steel has high strength and can withstand certain alkalis, but it is prone to oxidation corrosion. Copper has better comprehensive properties such as corrosion resistance, but too much sulfide in water or miscellaneous copper will corrode, and the mechanical strength of copper is low.
The state requires that aluminum alloy finned tube radiators and steel finned tube radiators with a wall thickness of less than 2.5mm must undergo internal anti-corrosion treatment and be coated with internal anti-corrosion coating. And the aluminum alloy finned tube radiator must use special non-metallic or bimetallic composite pipe fittings, and the aluminum thread must not be directly connected to the steel pipe to prevent electrochemical corrosion.
Generally speaking, steel finned tube radiators cannot be used in open pressureless boilers or steam heating systems. Aluminum alloy finned tube radiator cannot be used in heating system or steam heating system with excessive water PH value. Copper tube aluminum fin (copper-aluminum composite) finned tube radiator has no special requirements for water quality, but attention should be paid to avoid excessive torque on the interface between the header copper tube and the wing column copper tube during installation and use.
Pay attention to the welding quality. Different parts of the finned tube radiator are connected by welding, and the quality of the welding directly affects the quality and service life of the finned tube radiator. The welding process mainly includes filler welding and body welding. Relatively speaking, body welding has good corrosion resistance, and has a uniform weld scar without grinding; filler welding has poor corrosion resistance, and the surface is polished and smooth. Consumers mainly look at whether the welding is firm, whether the appearance of the welding seam is uniform, and whether there is any unevenness. However, the smoothness of the weld should not be too strong, because excessive grinding treatment will easily reduce the strength of the welded part, resulting in water leakage.
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