In industry things need to be protected and covered. We do this so that substances can be protected from heat, cold and the elements in general. A coating of HVOF is a ceramic based liquid coating that is fired at the subject or sprayed on it. When it sets solid it becomes rock hard and the substance can last for decades. One of the best proponents of the process are https://www.poeton.co.uk/standard-treatments/plasma-coatings. They will provide you with a solid professional service and advise on the best course of action for you to take with regards to your product.
The sort of things that get covered in HVOF vary. One of the most common uses is to apply it to engine components, especially those in high performance cars. The reason being that when a car is driven to an extreme, it becomes hot. The ceramic coating will keep the car parts cool and allow them to continue to function without melting.
The other materials that get covered are usually pipes. Pipes are required to convey a multitude of things between factory’s or underground. Pipes are expected to give decades of service as a leak is a major problem. A decent ceramic coating will give you that.