Supports and hangers are divided into three categories: bearing, limiting and vibration reduction. The pipeline has six degrees of freedom, three linear directions and three angular directions. The so-called limit is to restrict or limit the free displacement of the pipeline due to thermal expansion. The fixing bracket can be limited in one direction or in six directions, and the fixing bracket can be limited in all six directions. Guidance is also a form of restriction, that is, limiting the axial displacement or rotation of the pipeline. Sliding is a kind of load-bearing support, and there is no other limit except friction. As long as it can meet the required functions and realize the connection, it can be connected in any way, unlike what is said upstairs. It's like writing big characters. No matter what method and pen you use, it is ok to write this big character at last. Understand this truth, in any kind of scaffolding set, you can tell which one you need, and even design it yourself.