Round ceramic heating elements are primarily used for indirect heating of water, liquids, oil products, ovens and machines. In particular ceramic heating elements are integrated into vessels and containers where the heating element is placed in a tube which is welded or screwed into the vessel. This installation method is an advantage when using direct heating as the heating element can be replaced without emptying the vessel. Ceramic heating elements are also a perfect solution for heating oil and bitumen, as the medium may burn onto the surface of the heating elements due to the high temperatures created during direct heating. By using a tube it is also possible to achieve a large surface for heat distribution and therefore to install a high output.