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Miners steel, also known as mining I-beam, is a specialized profile for mine roadway support, which complies with the YB/T24-1986 standard. Its material is mostly made of high-strength steel such as 20MnK and Q275, with main models of 9 #, 11 #, and 12 #, suitable for strong support scenarios in underground tunnels and tunnels of coal mines
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.
