Ni80Cr20 resistance wire is inserted into ceramic inner hole. The whole heating body is soft & mouldable, energy-saving and durable. Furthermore, it is heated up quickly and evenly. The metal shell is made of stainless steel plate or galvanized steel plate.

When the diameter is larger than 600mm, the ring, clamped by pressure spring, should be separated int0 2-8 segmental arc to be heated. On the other hand, the minimum width of the heater is 18mm and the maximum width of that should not be more than 500mm, increasing by 7.5mm (1 8,25.5,33,40.5,48mm...). The thickness of the heating body is 12mm. If adding thermal insulation layer, the thickness of the heating body increases accordingly. Please take installation space into consideration.