Pipe telescopic connection: Flange connection, welding two kinds, direct buried type telescopic (non - ditch, installation of well) generally use welding.
Tube telescopic scope:
Due to expansion appliance has the good comprehensive performance, so it is widely used in chemical industry, building, water supply, water drainage, oil, light and heavy industry, freezing, sanitary, plumbing, fire protection, electric power and other infrastructure.
The action of the casing extender
Casing extenders are also known as telescopic sections, expansion joints, compensators.。