We have been producing constant power heating cables for over 30 years. We produced the world's first parallel resistance cut-to-length heating cable in 1978.
Constant Wattage heating cables, as their name suggests, are designed to deliver the same power output irrespective of pipe temperature.
We normally supply heating cables with a braid and outer jacket but cables can also be supplied with just a braid. Please ask or see datasheets for more information.