Cast iron thermocouple protection tubes with ceramic enamel coating are a popular choice for foundries due to their exceptional mechanical strength and resistance to high temperatures. These tubes are typically used in aluminium and zinc melting furnaces.
One of the primary benefits of these cast iron tubes is their mechanical strength. The tubes are constructed from seamless high-quality cast iron, which provides exceptional strength against mechanical impacts. Since solid pieces of metal are sometimes present in melting furnaces it is crucial the tubes are able to a beating. The ceramic enamel coating provides an extra layer of protection, ensuring a longer lifetime after immerging the tube into the melt.
Cast Iron tubes sometimes appear in different coloured coatings. In our case, all cast iron tubes have a black enamel coating. The colour has no other impact on performance. The tubes do not require any preheating and have an excellent thermal shock resistance, saving valuable time.
Overall, cast iron thermocouple protection tubes are an excellent choice for foundries that require exceptional mechanical strength, resistance to high temperatures and easy to use protection tubes in their melting furnace. Their use in aluminium and zinc melting furnaces and other applications where high temperatures are a concern makes them an ideal option for any foundry looking for a low-cost and highly efficient solution.
We have standard sizes cast iron protection tubes largely available from stock. Sizes range from 12"/305 mm to 72" / 1830 mm and all tubes are fitted with a ¾” NPT inside thread.