The ceramic heating elements are used for preheating and stress relieving of pipes, pressure vessels etc. The heating elements consist of multistrand nickel-chrome resistance wires which run through small “two-hole” ceramic insulators. The insulators together with the resistance wires are very flexible and give a good heat radiation and effective heat transmission.
The cold nickel tails and the resistance wire are welded together. It is designed to provide preheating up to a temperature of 1000°C.