Welded Stainless Steel Tube for Heat Exchanger Boilers
Introduction
Product Parameters
Company Profile
The finned tube is to improve the heat exchange efficiency, usually by adding fins on the surface of the heat exchange tube to increase the external surface area (or internal surface area) of the heat exchange tube, so as to achieve the purpose of improving the heat exchange efficiency, such a change Heat pipe.
classification
1. Divided by fin structure characteristics
According to the shape and structure of the fin, the finned tube can be divided into the following types: square finned tube, spiral finned tube, longitudinal finned tube, etc., spiral serrated Finned tubes (Helical Serrated Finned Tubes), inner finned tubes (inner finned tube) ,
2. According to whether the fin material of the finned tube is the same as the material of the tube body, it can be divided into a single metal finned tube and a bimetallic composite finned tube.
3. According to different processing techniques of finned tubes, finned tubes can be divided into: rolled finned tubes (extruded fin tubes), welded and formed finned tubes, roll-formed finned tubes, and packaged finned tubes.
Main performance requirements
As a heat exchange element, finned tubes work for a long period of time under high-temperature flue gas conditions. For example, the finned tubes for boiler heat exchangers have a harsh environment, high temperature and high pressure, and are in a corrosive atmosphere. This requires finned tubes to have high performance index.
1) Anti-corrosion performance (Anti-corrosion)
2) Anti-wear performance
3) Low contact resistance (lower contact resistance)
4) High stability (Higher Stability)
5) Anti-ashing ability
At present, the three-roller cross-rolled integral spiral finned tube technology has been successfully applied to single-finned tubes or composite finned tubes with copper and aluminum fins, or steel low-finned tubes; steel integral finned tubes are currently available Low-fin tubes are more common in the market, and integral high-fin tubes are mostly made of aluminum, copper, etc., and are generally cold rolled. In view of the high frequency welding finned tube and non-ferrous metal integrally rolled finned tube on the market, it is easier to find, and the integrally rolled finned tube (steel) has fewer finned tubes.
Application
It is extensively applied in hot air heating , drying , cooling , heumidifying and so on .
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