Thermal insulation is a kind of pipe that can improve warm temperature and is used widely in People's Daily life and has been widely accepted and used. It is widely used in the construction, decoration and pipeline laying, which can ensure the normal and smooth flow of the pipe.

Heat-supply pipeline is important for laying pipeline have a space that can heat bilges cold shrink, setting expansion joints are usually used in a certain distance method can let pipe heat bilges cold shrink, therefore, in the distance on the scaffold must be able to slide, only a bracket needs to be fixed, the fixed bracket section section called internal fixation.