1. Welding process:One of the commonly used welding process is bridging welding, and the other is overall welding:In concrete sharing, dirt may be deposited inside the finned tube as the number of days increases. As two tubes are stacked together in bridging welding, the drainage opening at the weld is relatively small and more likely to cause blockage. In group welding, the clogging is not easily formed by the immediate welding of the pierced tube. If you use the equipment, the effect of one time forming will be.

2. Application: At present, the application of various finned tubes in our country's water conditions, thick-walled seamless steel finned tubes are worrying. 2008, I visited the United States in the field of national heating finned tubes, the price of electric heating film floor heating created all the obscene finned tubes used for boiling water heating in the United States are made of copper, the service life can be reversed to the building. According to the United States on the finned tube applicable period, Harbin floor heating is an issue worthy of consideration for all finned tube manufacturers, agents and customers. Therefore, China's finned tube field "Eleventh Five-Year" governance clearly put forward China's finned tube life should not be less than fifteen years, in order to ensure the durability, sturdiness and environmental protection of the finned tube.

3. Look outside: finned tube stink skin paint can look good, the color is beautiful; surface spot welding is obvious, heating valve can touch the wheelhouse by hand to determine whether wet.

4. quantity and thickness: ask the thickness of the plate, immediately endangering the life of the finned tube, usually should be 1.3mm. but in order to fill the good with the bad, some manufacturers of the plate than they lay lay are thin. The simple way to distinguish is to omit the basic theoretical measurement of small-scale seeds, purely natural grasp of the thickness.

5. Ask anti-corrosion:Ask for internal anti-corrosion measures. Currently commonly used in the finned tube internal anti-corrosion architectural coatings are divided into two categories: one is organic chemical architectural coatings, namely zinc-based chromium salts. Electric geothermal coating and finned tube in ultra-low temperature organic chemical lazy, Jilin province floor heating strong adhesion, not easy to fall off. However, its singing is extremely strict, and the main parameters of each process are manipulated in strict accordance with the process. The professional technology and fancy ensure its coating quality. In addition, it should be protected from corrosion according to the brand of broken pieces and finned tubes, and water is prohibited to compete with the substrate immediately. However, the coating and the body are communicated by strong gluing (physically denser), Shenyang floor heating has high regulations on the appearance of the substrate, otherwise the coating is easy to show off. "Three points of architectural coatings, the first seven points of treatment", the basic rules of internal anti-corrosion architectural coatings emergency treatment and punishment is annoying and strict, requiring the use of geothermal cleaning machine degreasing, pickling passivation, acid treatment, phosphating treatment. The finned tube is priced according to the electric geothermal film, but the quality of the inner wall after coating cannot be checked. Domestic heaters really rely on the corrosion resistance of the material itself. The current sales market if the copper finned tube is not the key to do anti-corrosion treatment and punishment, then anti-corrosion should be bent.