The pipeline may bear many kinds of external forces, including its own weight, the thrust of the fluid acting on the pipe end, wind and snow load, soil pressure, thermal stress caused by thermal expansion and contraction, vibration load and earthquake disaster. In order to ensure the strength and rigidity of the pipeline, various supports (hangers) must be provided, such as movable supports, fixed supports, guide supports and spring supports. The setting of the bracket is determined according to the conditions of the pipe diameter, material, pipe wall thickness and load. The fixed bracket is used to control the thermal elongation of the pipeline in sections to make the expansion joint work evenly; the guide bracket makes the tube move only in the axial direction.
