Electric heating tubes can be widely used for heating water, oil, air, nitrate solutions, acid solutions, alkali solutions, and low melting point metals (aluminum, zinc, tin, Babbitt alloys). The electric heating tube is made of high-quality domestic thick walled seamless stainless steel tube, imported high-temperature magnesium oxide powder from the United States, and sealing material, ensuring that the temperature resistance of the electric heating tube reaches 900 degree . The electric heating tube will not be damaged during dry burning under temporary dehydration state; And the atmosphere protection blackened mesh belt furnace is used for high-temperature nitriding treatment at 1060 degree , which improves the high temperature and corrosion resistance of the electric heating tube and ensures its service life.

1, Technical requirements for waterproof electric heating pipes:

1. Wire winding: The density of the wire winding should be uniform to prevent the inclusion of fluffy substances; Spot welding does not damage the wire, and wire smashing should be firm.

2. Electric annealing during use: φ 8.5 electric heating tube completed within 5.5 seconds; φ 6.5 electric heating tube completed within 4 seconds; Excavate a hole of 4-6 mm, without bending even with the rod.

3. Shrinkage tube: The length, diameter, and resistance should be accurate; Scribe and cut both ends of the tube to be the same length.

4. Waterproof electric heating tube assembly: When the humidity is above 80% after 14 hours and the humidity is above 340 degree , the resin seal is used to leave a 2mm gap for curing.

2, The waterproof electric heating tube includes a tubular shell, in which a resistance wire is threaded and filled with thermal insulation medium. The lead out rod connected to the resistance wire is connected to the power line at the end of the shell, and the end of the shell is filled with a silicone molded section. The connection joint between the lead out rod and the power line is embedded in the silicone molded section. This utility model uses a silicone molding section to seal the end of the shell, and embeds the connection joint into the silicone material through molding, greatly improving the sealing effect of the electric heating tube end, and can meet the requirements of use in humid environments. Its use reliability is high and its service life is long. It has excellent anti leakage, waterproof performance, and is convenient and durable.