Design and customization prerequisites: Flat flange electric heating tubes are generally used in liquid heating environments. Customers need to inform us of the specific main components of the liquid to be heated, as well as the ideal installation method so that we can set the cold zone of the flat flange electric heating tube. Additionally, we need to know the specific pressure level of the working environment to help you select the tube diameter, wall thickness, and flange thickness.
1. Voltage, power
2. Tube diameter, typically: 8mm, 10mm, 12mm, 16mm, 20mm
3. Flat flange: National standard GB/T 9119-2010 Plate flat welded steel pipe flange, common sizes: DN65-DN80-DN100-DN125-DN150-DN200-DN250, etc. Different flange standard dimensions are selected based on different pressure ratings. Of course, during design and production, to reduce costs without affecting lifespan, the flange thickness may be changed. Please consult sales personnel for details.
4. Typically composed of 1, 2, 3, 6, 9, 12 (usually multiples of 3) U-tubes combined by TIG argon arc welding onto the flange.
5. Tube outer shell material selection: Main materials include 10# carbon steel, SUS304, SUS321, SUS316L, SUS310S (commonly known as 2520), titanium tubes, etc.
6. Tube outer shell coating selection: The surface of the metal tube outer shell can be coated with anti-corrosion or anti-scaling coatings to effectively enhance corrosion resistance and anti-scaling performance.
7. Tube outer shell coating process: Liquid spraying and electrostatic powder spraying are available. Electrostatic powder-coated heating tubes directly solve many problems of Teflon-sleeved heating tubes and can completely replace them with better results.
8. Flange material: 10# carbon steel, SUS304, SUS321, SUS316L
9. Junction box: Standard fiberglass reinforced plastic cover or explosion-proof cover available.
10. Heating wire material selection: Typically iron-chromium-aluminum wire (Beijing Shougang) or nickel-chromium wire (commonly H140, 2080 resistance wire, etc.). The choice between these two depends on the customer's working environment (temperature and vibration).
[Design Suggestions for Flat Flange Electric Heating Tubes]
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