What is U steel arch？
U steel arch is a kind of passive support for coal mine. It has high tensile strength and compressive strength, good toughness, high support force, large support strength and can be used repeatedly. It is widely used in the mine U lane, especially in deep complex roadways and soft coal seam roadways. U steel arch manufacturers in china
U steel arch is a steel with a cross section like the English letter "U". The new national standard was issued in 2008. Due to inconsistent understanding of U steel arch's performance and requirements, U steel arch's cross-sectional shape, geometric parameters and material quality have different standards in different countries. It can be roughly divided into five types: 18U, 25U, 29U, 36U and 40U, but 18U has very low bearing capacity and is seldom produced and used at present. U steel arch manufacturers in china
Although there are not many models, U steel arch have many specifications, but they all have the characteristics of large bearing capacity, long supporting time, convenient installation, difficult deformation, etc.
Due to the unique advantages of U steel arch, it is mainly applied to mine roadway, secondary support of mine roadway and cross-mountain tunnel support. In addition, U steel arch has also been widely used in the manufacture of highway telescopic metal supports at Domestic and foreign. U steel arch manufacturers in china
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