What is the difference between U steel and channel steel?
U steel is a steel English like the letter "U" with a cross section, sometimes is "better" Heng Jie Japanese character shape.Main features: large pressure, long support time, easy installation, not easy to deformation and so on.Main uses: mainly used in mine roadway, roadway support, and two times of the tunnel supporting etc..As the main shape steel for the retractable metal support of tunnel, U steel is widely used at home and abroad.However, because of the inconsistent understanding of the properties and requirements of U steel, the shape, geometrical parameters and material of U steel are different from each other.There are four types of U steel produced in our country, 18U, 25U, 29U and 36U. Among them, the first two kinds of 60s products, belong to the waist positioning; the latter two are 80s products, is the ear positioning. U18 is rarely produced because of its low carrying capacity.In the GB/T 4697-2008, in addition to the above four models of U steel, the new 40U model.
Channel steels and U steels are simply different when applied,Mainly divided into ordinary channel (U steel) and light channel (light U steel).It can also be considered as follows: the channel steel is formed by thermal elongation, and the U steel is generally rolled under cold condition.The biggest difference between the two is thickness: the overall thickness of the channel is not the same, the overall thickness of light U steel is the same
Channel steel: the channel steel is a long strip steel with a cross section.Channel steel is divided into ordinary channel steel and light channel steel. Standard Specification for hot-rolled plain channel steel is 5-40#.According to the channel shape and can be divided into 4 kinds: cold bending equilateral channels, cold-formed non equilateral channel steel, cold rolled edge channels, the cold bending edge channelsAccording to the theory of steel structure, it should be stressed by the channel plate, that is to say, the channel should stand rather than lie prone.
U steel (full name: hot rolled U steel for mine roadway support)U steel is a steel English like the letter "U" with a cross section, sometimes with a cross section of Japanese letters "better" shape.Main features: large pressure, long support time, easy installation, not easy to deformation and so on.Main uses: mainly used in mine roadway, roadway support, and two times of the tunnel supporting etc..As the main shape steel for the retractable metal support of tunnel, U steel is widely used at home and abroad.
