【 Characteristic description of stainless steel heat exchange tube 】

 

1, excellent heat transfer performance, due to the use of wall thickness 0.5-0.8mm thin wall material, improve the heat transfer performance, under the same heat transfer area, about 1.2 to 1.30 times of copper pipe.

 

2, strong corrosion resistance, resistance to pitting corrosion, ammonia corrosion and general corrosion, service life can reach more than 20 years.

 

3, because the stainless steel material is TP304, TP316L and other high-performance alloy steel, the surface has a high strength, the inner wall of the pipe is smooth, making the bottom thickness of the boundary laminar flow thinner, so it has a strong resistance to high temperature steam erosion performance.

 

4, the rigidity of the pipe is significantly improved, and the vibration resistance is good.

 

5, strengthen the heat exchange tube, improve the anti-scaling performance.

 

6, the tube loading process performance is good, the traditional expansion process, the outer diameter tolerance is consistent with the steel pipe, there is no need to change the processing tolerance of the tube plate hole, which is conducive to direct selection, especially convenient for the old unit copper tube to be changed into stainless steel heat exchange tube.

 

7, good economy, under the same heat exchange area, the cost is currently about 60% of the copper tube, can be directly stainless steel tube change.

 

【 What are the principles of the use of stainless steel heat exchange tube? 】

 

With the development of the heat exchange profession, stainless steel heat exchange tube is widely used, the following small series to introduce the application criteria of stainless steel heat exchange tube.

 

There is no severe corrosion leakage, the service life is as long as possible, erosion and wear resistance, good vibration resistance, high heat transfer coefficient, reasonable price. For decades, China's condenser, oil cooler, water cooler, etc., have used copper pipes, and the specific point is high thermal conductivity.

 

In practice, some copper tubes of the condenser are severely corroded by ammonia, and some copper tubes are severely worn. These two phenomena cause severe leakage of copper tubes, greatly shorten the service life of copper tubes, reduce the safety and economy of unit operation, and increase the time for stopping and replacing copper tubes. For this reason, many people began to reconsider the condenser pipe problem. In recent years, 304/316l stainless steel tube heat exchange tube has been used in condenser, oil cooler and air cooler. Low-pressure heaters, according to incomplete statistics, use more than 50% of the units, including 50-300MW of new units. The use of stainless steel tube heat exchange tube breaks the traditional concept of only using copper tube, improves the safety and economy of the equipment, and reduces the investment.