Main features: high pressure resistance, long support time, easy installation and not easily deformed.
Main use: Mainly used for supporting mine tunnels, secondary support of mine tunnels, and support of mountain tunnels.
As the main type of steel used to manufacture retractable metal supports for tunnels, U-shaped steel is widely used both domestically and internationally.
However, due to inconsistent understanding of the performance and requirements of U-shaped steel itself, the cross-sectional shape, geometric parameters, and materials of U-shaped steel vary from country to country, mainly including four types: 18U, 25U, 29U, and 36U
U-shaped steel is a kind of steel with a cross-section like the English letter “U”, which bears high pressure and is used in mine roadway.
Main features: high pressure, long support time, easy to install and not easy to deform.
Main uses: mainly used for mine roadway, secondary support of mine roadway, and support and support of mountain tunnel.
U-shaped steel is widely used at home and abroad as the main section steel for manufacturing the compressible metal support of roadway.
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