Thick film heating tube, high temperature resistance wire uniformly distributed in high temperature stainless steel seamless tube, filled in the void part compactly with crystalline magnesia powder with good thermal conductivity and insulation performance. The structure of heater is not only advanced, but also effective.

The utility model has the advantages of high rate, uniform heating, simple structure, high mechanical strength, safety and reliability, simple installation and long service life.

1. Small size and high power.

2. Fast thermal response, high temperature control accuracy and high comprehensive thermal efficiency.

3. Wide application range and strong adaptability.

4. High heating temperature.

5. Long life and high reliability.