Simply put, it is used to construct 16mm wall thickness supporting steel pipes, steel arches and steel grilles used for subway construction, which are all used for supporting and blocking the soil walls of culvert tunnels to prevent the foundation pit from collapsing. In subway construction used widely.

Subway construction used in steel support components including fixed ends, active joints.

Steel support the main specifications Φ400, Φ580, Φ600, Φ609, Φ630, Φ800 and so on.