What are the design and customization methods of flange heating tubes?

How is a flanged heating pipe designed and customized?

Prerequisites for flanged heating pipe design and customization: Flange heating pipes are generally used in liquid heating environments. Before custom design, customers must provide the main components of the liquid being heated and the ideal installation method so we can determine the cold zone for the flanged heating pipe. We also need to provide the specific operating pressure so we can select the pipe diameter, wall thickness, and flange thickness for the heating pipe.
1. Voltage and Power

2. Pipe Diameter: Typically 8mm, 10mm, 12mm, 16mm, and 20mm.

3. Flat Flange: GB/T9119-2010 flat-weld steel pipe flanges. Common sizes include DN65, DN80, DN100, DN125, DN150, DN200, and DN250. Different standard flange sizes are selected based on different pressures. Of course, flange thickness may vary during the design and production process to reduce costs without affecting service life. Please consult a sales representative for details.

4. Tube Shell Material: Main materials include 10# carbon steel, SUS304, SUS321, SUS316L, SUS310S (commonly known as 2520), and titanium tubes.

5. Housing: The metal housing can be coated with an anti-corrosion or anti-scaling coating to effectively improve corrosion resistance and anti-scaling performance.

6. Housing Process: Liquid spraying and electrostatic powder coating are available. Electrostatic powder coating directly solves many of the problems of PTFE-sheathed heating tubes, providing a complete alternative and superior performance.

7. Flange Material: 10# carbon steel, SUS304, SUS321.

8. Junction Box: Standard fiberglass or explosion-proof housing available.

9. Heating Wire Material: Commonly used are iron-chromium-aluminum wire or nickel-chromium wire (typically H140, 2080 resistance wire). The choice depends on the customer's operating environment (temperature and vibration).

Uneven heating in flanged electric heating tubes is related to the quality of the production process. Specific reasons are as follows:

1. Poor quality of the heating wire. Compression results in uneven wire spacing, which directly leads to uneven heating in the heating tube.

2. The heating wire in the heating tube is usually designed in a spiral shape. During processing, the heating wire should be distributed as evenly as possible, otherwise uneven heating will occur.

3. When installing the heating wire vertically in the pipe, gravity can cause uneven heating.

4. Improper operation of the heating tube. When managing the heating, sufficient magnesium oxide powder should be used to fill the tube tightly before shrinking it with a tube shrinking machine. (Manual filling and extrusion of magnesium oxide powder will result in uneven heat dissipation.)