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The U-shaped or double-U electric heating pipe is characterized by placing electric heating wires in seamless metal pipes (carbon steel pipe, titanium pipe, stainless steel pipe and copper pipe), and the gap part is tightly filled with crystalline magnesium oxide with good thermal conductivity and insulation. The two ends of the heating wire are connected with the electric source through two lead-out rods, and the gap part is filled with magnesium oxide powder with good thermal conductivity and insulation, Because the electric heating tube bends like the English letter U, it is called U-shaped electric heating tube. Its specifications can be customized according to the user's requirements, and it has the characteristics of simple structure.

Main technical parameters of electric heating pipe:

1. Shell material: sus04 SUS 321、 SUS 310S、 SUS 316L And so on

2. Heating wire material: 0cr25al5 or Cr20Ni80, etc

3. Insulation filler: medium Wen Gai Xing crystalline magnesia powder, High temperature crystallized magnesia powder etc.
4. Optional leads: generally, no wiring, directly out of the terminal
5. Voltage: 12V, 24V Fu 、36 Fu 、48 Fu 、110 Fu 、220 Fu 、380 440 V V 600 Fu etc.
6. Power (surface load): the power is determined according to the surface load and size. The general surface load is: domestic process: 5W / cm2; imported process: A: 5w-12w / cm2; imported process: AA: 12w-15w / cm2; imported process: AAA: 15w-20w / cm2; general surface load: domestic process: 5W / cm2; imported process: Grade AAA: 15w-20w / cm2
7. Pipe diameter: 8.5mm-20mm
8. Length: generally no more than 6600 mm according to customer requirements
9. Cold insulation resistance: the cold insulation resistance shall not be less than 200m Ω during delivery inspection; after sealing test, the insulation resistance after long-term storage or use shall not be less than 5m Ω
10. Cold leakage current: ≤ 0.5 mA

Precautions for use of U-type electric heating pipe:

1. If it is not used temporarily, the storage position should be kept dry to ensure the insulation performance of the electric heating rod;

2. Use in strict accordance with the rated voltage, and the working voltage shall not exceed 10% of the rated voltage;

3. During installation, the components shall be evenly arranged, and the spacing between pipes shall be greater than 20 mm;

4. Protect the sealing material of the pipe orifice. Do not use too much force when wiring. The effective heating area must be immersed in the liquid or mold;

5. When there is scale or carbon deposition on the surface of the electric heating pipe, it should be cleaned in time to avoid affecting the heat dissipation of the tube and shortening the service life;

6. When melting metal solid nitrate, paraffin, asphalt and other materials, the heating material should be melted first, then the external voltage of the electric heating tube can be reduced, and then it will return to the rated voltage after melting. In addition, the safety measures should be fully considered when heating nitrate and other substances which are prone to combustion and explosion accidents.

The U-type electric heating pipe is used for water heating. In case of serious scale production, our factory has the process of spraying waterproof scale coating on the surface of the pipe body to effectively slow down the scale formation rate, and after a period of time, the scale will automatically peel off. The product is commonly used in water tank heating, oil tank, water tank, hydropower plant, barbecue, internal heating and insulation of insulation box, metal casting and machine internal heating