A liner plate is a part of a modern support system in underground construction. Liner plate sections are placed in tunnels and bolted together into a solid sheet that eventually forms a complete tube. Steel ribs are used in larger tunnels for reinforcement.

Liner plates, which were developed as a tunnel lining material, are corrugated thin steel sheet with flanges attached on four sides. Because of their outstanding features, our liner plates are used widely in shafts (for deep foundation and jacking methods), catchment wells and other applications.