Some mistakes in buying radiators
Mistake 1: copper radiator (or aluminum radiator) does not corrode
Generally speaking, the corrosion resistance of copper is better than that of steel, but under certain environment, the copper radiator will also have corrosion. For example, if there is too much sludge and sulfur in the system, or the selected copper surface is attached with a carbonized layer, etc., the corrosion of the copper radiator will be caused. In addition, due to the different corrosion principles of materials, although the aluminum radiator has strong anti-oxidation corrosion ability, it is prone to alkali corrosion and chloride ion corrosion. Therefore, when the water quality of a heating system is alkaline (pH value is higher than 8), or the chloride ion content is high (salt content is large), the radiator will have the potential of corrosion and water leakage.
Mistake 2: heating water leakage is the problem of radiator
In the heating season last winter, several radiator leakage accidents were exposed by the media, which also attracted the attention of the heating radiator Committee of China Building Metal Structure Association and made a positive response: the association organized sende, yisapu jintage, Florence, Huarui and other brand radiator business leaders to discuss "radiator life and system problems", And find out some "symptoms" of radiator leakage. Experts at the meeting believe that the heating water quality is complex or the radiator is mixed with the problem of installation, which may lead to the leakage or non heating of the heating radiator. In addition, in non heating season, the heating radiator should be full of water for maintenance, otherwise it is easy to bury hidden dangers. "In the non heating season, the water in the heating system will be drained, which will lead to the rapid corrosion of steel radiator, boiler, water pump and valve, as well as the blockage of radiator temperature control valve, heat meter and other products." According to an expert.
Mistake 3: product wall thickness (or no weld or smooth inner wall) is not afraid of corrosion
Cast iron radiator is not easy to be damaged by corrosion because of its good anti-oxidation performance, not because of the wall thickness. In recent years, some small domestic manufacturers try to increase the wall thickness to solve the anti-corrosion problem of steel radiators, which is wrong. Because the corrosion of steel radiator is local corrosion of small holes, not uniform corrosion. If according to their theory, if the 1.3mm steel plate is corroded and perforated in three years, then the 2.0mm steel plate will certainly be corroded and perforated in five years, which is also far from meeting the user's requirements for radiator life. In addition, there are some radiator manufacturers in the market who are vigorously promoting their radiator products "no weld, clean and smooth inner cavity", etc. In fact, it can not play a role in the anti-corrosion of radiator. Because the corrosion of steel radiator does not occur on the weld, because the corrosion of steel radiator is oxygen corrosion, so "no weld or smooth inner cavity does not mean no corrosion".
Error 4: internal coating is equal to anticorrosion
In the radiator market, the salesperson must be called "antiseptic". As a matter of fact, up to now, there are two common types of internal coating anticorrosion in the domestic radiator Market: "organic coating" and "inorganic coating". Generally speaking, the cost of inorganic coating is higher than that of organic coating, the process is more complex, the process requirements are more strict, and the anti-corrosion effect is better than that of organic coating. Of course, there are also two processes in the market. For example, the second generation of Sinovel anti-corrosion products produced by Tianjin Sinovel warm house are based on inorganic coating plus an organic coating, double coating, multiple protection, and more safety.
Myth 5: the more colorful and weird the product, the more decorative it is
Although the radiator with unique shape increases the decoration and meets people's personalized needs, it is not beautiful to be too fancy and weird. For example, the market is full of "vase type", "Violin type" and "moon type" radiators, whose workmanship is rough, and it is difficult to match with other furniture harmoniously in the room. There are also thin and excessively curved pipes that will obviously affect their heat dissipation function.
Myth 6: where to buy famous brand products
When consumers purchase heating and accessories, they'd better choose powerful large enterprises and famous brand products. The place of purchase should be in large-scale building materials supermarkets and regular brand stores. Don't be greedy for cheap, or to save money, buy radiators in the neighborhood, street shops or private hands. According to the data reflected by many manufacturers, it is the most likely problem to buy radiators at the temporary sales point in the community: consumers have problems with their radiators at home, which are reflected to the manufacturers, but the manufacturers find that the brand of radiators is fake, or the products that flow into the market through illegal circulation channels.