Hot-rolled U-shaped steel arch support for mine roadway support is the U-shaped tunnel roof support that everyone often calls. U-shaped steel is a kind of steel whose cross section resembles the English letter "U", and sometimes the cross section is in the shape of the Japanese letter "ひ".
Tunnel Roof Support Main features: high pressure, long support time, easy installation and not easy to deform.
Steel Arch Support Main uses: Mainly used for mine tunnels, secondary support of mine tunnels, and support and support of mountain tunnels.
As the main section steel for manufacturing roadway shrinkable metal supports, U-section underground roof support is widely used at home and abroad.
However, due to the inconsistent understanding of the performance and requirements of U-shaped steel arch support itself, the cross-sectional shape, geometric parameters and material of U-shaped steel vary from country to country.
There are mainly four types of U-shaped tunnel roof support produced in my country: 18U, 25U, 29U, and 36U. The first two are products from the 1960s, which belong to waist positioning; the latter two are products from the 1980s, which belong to ear positioning. Due to its low carrying capacity, U18 is rarely produced.
