The flange type buried corrugated expansion joint should be equipped with an inspection well to facilitate maintenance and replacement of the expansion joint after several years. There is no inspection well, and when replacing it, the road surface needs to be excavated, which is quite troublesome. Whether to set up inspection wells is generally based on the requirements of Party A. Performance characteristics of buried expansion joint: Mainly used to absorb axial displacement caused by thermal expansion or contraction along the axis direction of buried pipelines.
The flange type buried corrugated expansion joint has the characteristics of resistance to soil pressure, self guidance, and can achieve the same service life as the buried pipeline without maintenance or replacement. Directly buried corrugated compensator The expansion joint is designed as a compensating limit structure, and the pipeline laying can be without guide brackets. Directly buried corrugated compensator Expansion joints are used for pipeline transportation of corrosive media or in environments with corrosive media. Anti corrosion coatings can be applied to the inner or outer walls of expansion joints.

Curved tube pressure balanced corrugated compensator, directly buried corrugated compensator