Indeed national norms and technical documents are not heavy steel, he said it is the difference between BOLTED, might call general steel as "normal steel" is more appropriate. Because of the very wide range of ordinary steel, it may contain various steel structure, regardless of load size, and even many of the elements of light steel structure, light steel structure housing Technical Specification only for its "light" feature and provides a number of more specific content, scope and confined to the single door frame. Strut is a vague term, generally there are two kinds of understanding. One is the current "Steel Design Code" (GBJ17-88) in Chapter 11, "round, small angle of light steel structure," Nanjing steel staircase, refers round and less than L45 * 4 and L56 * light steel angle 36 * 4 produced shows, light steel and heavy steel structure itself of the points is not the severity of, and in the envelope material to withstand the severity of, and in the structural design concept is the same. Seismic mostly low-rise villa roof sloping roof, so the roof structure is basically formed by a cold-formed steel members and triangular roof truss system, light steel structural member After sealing plate and gypsum board, forming a very strong The 'plate rib structure system', this architecture has a stronger ability to resist seismic and horizontal loads applied to the seismic intensity of 8 degrees above areas. Wind resistance type steel construction light weight, high strength, good rigidity, strong deformation. Only one-fifth the weight of buildings brick structure, resistant to 70 meters per second hurricane, so that the life and property can be effectively protected. Light steel structure residential structure durability in all cold twisted thin steel component system composed of high-strength steel reinforced corrosion using super cold rolled and galvanized board manufacturing, avoiding the effect of corrosion of steel in construction and use, increasing the use of light steel components life. Structural life of up to 100 years. Insulation materials used in fiberglass insulation cotton-based, with good thermal insulation effect. For external wall insulation board, Nanjing Steel offer, effectively prevent the wall of the "cold bridge" phenomenon, to achieve a better insulation effect. R15 insulation around 100mm thick cotton thermal resistance can be equivalent to 1m thick brick wall. Nanjing Steel Co., loyal love leading products light steel activities room, Nanjing Steel Works offer, which according to sub-color steel wall panels and Magnesium. We are very concerned about product quality, Nanjing Steel, not only in a safe, flexible and efficient products and services to our customers, also continued to expand service areas, set a lot of proactive services, Nanjing steel canopy, loyal love activity room ( certification), Nanjing Steel loyal love by Nanjing Steel Limited. Nanjing loyal love Steel Ltd. (www.njzhongai.com) is Nanjing, the activities of the leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In loyal love activities of leadership with the staff warmly welcome all inquiries negotiations to create loyal love activities of a better future.