Common materials for heat exchanger tubes include carbon steel, low-alloy steel, stainless steel, copper, copper-nickel alloys, aluminum alloys, titanium, and non-metallic materials such as graphite, ceramics, and polytetrafluoroethylene. When designing heat exchanger tubes, the choice of material should be based on working pressure, temperature, and the corrosiveness of the medium.
With the continuous improvement of stainless steel welded pipe technology, it is increasingly replacing seamless stainless steel pipes in many applications, such as heat exchanger equipment tubes and medium/low-pressure boiler tubes. Austenitic stainless steel welded pipes are particularly suitable for heat exchanger tubes due to their excellent corrosion resistance, smooth surface, and mature manufacturing process. According to GB/151-1999, stainless steel welded pipes can be used when the tube-side pressure is ≤6.4 MPa. Given the high maturity of stainless steel welded pipe production technology, they fully meet the requirements for general heat exchanger tubes and offer unique advantages.
Standards and Specifications
GB/T24593-2009 specifies dimensions, shape, weight deviations, technical requirements, test methods, inspection rules, and packaging for austenitic stainless steel welded pipes used in boilers and heat exchangers.
HG20537.1-1992 outlines specifications, technical requirements, and usage rules for austenitic stainless steel welded pipes in chemical, petrochemical, and pharmaceutical industries.
HG20537.2-1992 focuses on technical requirements for austenitic stainless steel welded pipes in shell-and-tube heat exchangers.
HG20537.3-92 and HG20537.4-92 provide detailed requirements for stainless steel welded pipes used in chemical equipment, covering both small and large-diameter pipes.
Stainless Steel Heat Exchanger Tube Mill
In the quest for high-quality stainless steel heat exchanger tubes, manufacturers and industries increasingly turn to advanced tube mill technologies. ST Machineries, a leading Chinese manufacturer and supplier of stainless steel tube mills, offers cutting-edge solutions tailored for the production of stainless steel heat exchanger tubes. With over 26 years of expertise, ST Machineries specializes in designing and manufacturing precision tube mills that integrate advanced automation, laser welding, and online bright annealing technologies. These innovations ensure high precision, efficiency, and superior quality in tube production, making ST Machineries an ideal partner for industries such as chemical, petrochemical, and pharmaceutical sectors
