Spiral heaters are very specific type of electric heaters. These, together with the cartridge heater are becoming more common and are currently the most popular among the newly heaters machinery. Spiral heaters are often used to mount on certain cylindrical elements, which makes it possible to heat the normal functioning of the machinery and the specifics of the factory.
Spiral coil heaters have a specific shape. Made of square tube with a standard small size. The most popular are the pipe sizes of 3 mm 3 mm. Subsequently, this tube is wound, to acquire specific spiral shape. Heaters differ especially in the outer and inner diameter of the coil, the height of a heater, and the length of power drawn.