Mineral wool or polyurethane is used for thermal insulation of pipes. It is possible to carry out thermal insulation only after the end of the pipes is completed. But there are places in which thermal insulation is not so easy. In this case, it is worth using heat -insulated pipes. They initially apply a layer for protection during production. The use of such pipes is very reliable. In Europe, the experience of using such pipes is very large. In European cities, the heating system is built differently than in Russia. Here heating depends on small thermal stations. In this case, the highest temperature at the output is not required. So there is no such large pressure in the pipes.