H beam is a new kind of economic construction steel. H beam cross-section shape of economic rationality, good mechanical properties, rolling cross-section extends over all the points on a uniform internal stress is small, compared with the ordinary I-beam, with a section modulus, light weight, saving advantages of the metal, construction can structure to reduce 30-40%; and its parallel inner and outer legs, leg-side is the right angles, assembled into composite components, saving welding, riveting work amounted to 25%. Commonly used in the required commitment cut capacity, good stability, a large section of building (such as factories, high-rise buildings, etc.), as well as bridges, ships, hoisting and conveying machinery, equipment foundation, frame, foundation piles. H-beam steel by the word developed from the optimization of the mechanical properties of a section of the economy more good cross-section of steel, especially in cross-section with the letters "H" the same as the name. Its characteristics are as follows: → flange width, lateral stiffness. Bending ability. → flange allows connection of two parallel surfaces, processing, and ease of installation. Compared with the I-beam welding → photo, low cost, high precision, residual stress, without the expensive welding and weld testing, saving about 30% of the cost of steel production. → load the same section. Hot-rolled H steel weight than conventional steel 15% -20%. → compared with the concrete structure, hot-rolled H steel can increase the use of an area of 6%, and reduce the structure weight of 20% to 30% reduction in structural design of internal forces. T → H beam can be processed into steel, the cellular beam can be formed by the combination of various cross section forms, great to meet engineering design and production needs. H section steel is mainly used for engineering, plant equipment, machinery, bridges, highways, houses, etc.; mechanical and physical properties of good, solid, energy conservation and environmental effects. Steel H-section steel is an economical, widely used in industry, buildings, bridges, oil rigs, etc., according to forecast 2005 demand of approximately 250 million tons H section steel, the demand for 500 million tons in 2010, but China H beam production capacity of 120 tons, the market demand is very huge. 
 Edit this paragraph the characteristics of H beam 
 1. Structural strength high 
 Compared with the I-beam, a large section modulus, in the same load conditions can save 10-15% of the metal. 
 2. Design a flexible, rich 
 H section steel in the beam 
 Under the same high, steel concrete structure of the bay bay than 50% larger, so that the building layout more flexible. 
 3. Structure of light weight 
 Compared with the light weight concrete, structural weight reduction, reducing the internal forces of structural design, structural basis of processing requirements make the low, simple construction, lower cost. 
 4 Structural stability 
 . To the main hot-rolled steel H beam, and its scientific and rational structure, plasticity and flexibility, structural stability, and suitable to withstand vibration and impact load large structure, strong resistance to natural disasters, especially for some of multi-structural earthquake zone. According to statistics, in the world, devastating more than magnitude 7 earthquake in the H beam steel structure affected mainly the least. 
 5. Increase the efficient use of space structures 
 Compared with the concrete structure, steel column section size, and thus increase the effective use of building area, depending on the construction of different forms, can increase the effective use of area 4-6%. 
 6 provincial labor and material 
 Compared with welded H section steel, can significantly save labor and material, reducing raw materials, energy and labor consumption, low residual stress, good appearance and surface quality. 
 7. Easy machining 
 Easy connection and installation of the structure, but also easy to remove and reuse. 
 8 Environmental Protection 
 H beam can be effectively used to protect the environment, embodied in three aspects: First and concrete than can be used dry construction, the resulting noise, less dust; the second is to reduce the weight, foundation construction borrow less, on destruction of land resources, small, in addition to a significant reduction in the amount of concrete, stone dug to reduce the amount of mountains, is conducive to ecological and environmental protection; third is life after the expiration of building structure, the structure removed, a small amount of solid waste generated, recycling scrap value high. 
 9, a high degree of industrialization and production 
 Hot-rolled H section steel to steel-based industrial production of a high degree of ease of manufacture, intensive production, high precision, easy installation, quality, easy-to-assurance, you can build a real house production factories, bridges production factories, production plants and other industrial plants . The development of steel structure, to create and promote the development of hundreds of new industries. 
 10. Faster construction 
 Small footprint, and is suitable for all-weather construction, little influence of climate conditions. Hot rolled H beam steel structure production rate of about Concrete Construction Construction 2-3 times the rate of capital turnover multiplied reduce financial costs, thus saving investment. To China's "first high-rise" Shanghai Pudong "Jin Mao Tower," for example, the structure of the main body of up to nearly 400m in just less than six months to complete the cap structure, while the reinforced concrete structure requires two years duration.