Hot rolled H section steel
H steel is a new type of economical construction steel. H type steel cross section shape is reasonable in economy, good mechanical properties, rolling each point on the extended section is uniform, small internal stress, compared with the ordinary beam, a section modulus, light weight, saving advantages of metal, can make the building structure to reduce 30-40%; and because of its inner and outer legs parallel leg end is right, assembled into components, welding, riveting work can save up to 25%. Often used in large capacity requirements, large cross section stability, such as buildings, high-rise buildings, as well as bridges, ships, lifting transport machinery, equipment foundation, support, foundation piles.
H is divided into hot-rolled H steel and welded H steel (H) two, hot-rolled H steel is divided into wide flange, H steel (HW), flange H (HM) and narrow flange H (HN) three.HW is a H type steel flange height and width substantially equal; mainly used for reinforced concrete frame column steel column, also known as rigid steel column; column is mainly used in steel structureHM is of H steel, and the width and flange width ratio is approximately 1.33~~1.75, mainly in the steel structure: used as steel frame columns, used as frame beams in frame structures subjected to dynamic loads; for example: equipment platformHN is H steel with a flange width ratio greater than or equal to 2, mainly used for beams; the use of I-beam is equivalent to that of HN;
The flange width, lateral stiffness.The bending capacity, than the beam about 5%-10%.The two flange surfaces parallel to each other makes the connection, convenient manufacture and installation.We compared with welded I-beam with low cost, high precision, small residual stress, without expensive welding and weld testing, saving the cost of steel production is about 30%.The same section under load. The structure of hot rolled H steel than the traditional steel structure weight 15%-20%.We compared with the concrete structure, the structure of hot rolled H steel can be increased by 6% of the area, and the structure to reduce weight 20% to 30%, reducing the internal force of structure design.The H type steel can be processed into T type steel honeycomb beam can be formed by the combination of all kinds of section form, design and production greatly satisfy the engineering demand.
