Unconstrained compensator production solved many of the problems during installation, convenient application and installation of the user. The following is the specific content in detail.
　　Unconstrained compensator directions for use:
　　"Unconstrained" is due to the previous type axial expansion joint on the use of more constraint conditions is named. It completely eliminates the past to guide bracket type axial expansion joint spacing of L1 acuities were 4 d, L 4 d or less and the requirements of L3. My company production without restricting expansion joint has realized the tube spacing "unconstrained" at the end of the target. Unconstrained expansion joint with columnar stability not only, also has the orientation ability. So it completely eliminate 4 d, 14 d, L3 constraints, overcome the installation error, small volume, safe and reliable, the characteristics of axial type expansion joint can eliminate twisted and instability, which can easily be seen in the common diseases, such as pipe insulation and has brought great convenience.
　　Without restricting expansion joint in the fixed stent spacing and the fixed support thrust calculation and determination of average axial type expansion joint are exactly the same. In order to make the project is stable and reliable, without restricting expansion joint in addition to the required close to the fixed bracket installation, still requires each fixed stent spacing, has three guide bracket.
　　No constraint expansion joint can be applied to the pipeline's overhead, cooking, can also be applied to the directly buried installation with compensation, the expansion joint should establish inspection Wells or dark room.