Although early development process Editing Chinese iron structure has outstanding achievements, but because 2,000 years of feudalism bondage, science developed, therefore, long-term stay in the horizontal iron buildings. Until the late 1800s, China began using modern steel. After the founding of New China, the steel structure of the application has been greatly developed, both in quantity and quality, or far more than in the past. Light steel floor by cold-formed steel or composite beam, floor OSB structural panels, support, connectors and other components. The materials used are OSB, cement fiberboard, and plywood. In these lightweight floor surface can withstand the load of 316 to 365 kilograms per square meter. Steel (13) the number of steel construction, marking the economic strength of a country or a region and economic level of development. After entering 2000, a significant increase in our national steel design manufacturers, national strength, steel production has become a world power, proposed to "positive, rational steel" in the building, from the get rid of the "limit of steel," the bondage, steel construction in economically developed areas gradually increased. Especially after 2008, under the impetus of the Olympics, there has steel construction boom, strong market demand, and promote the rapid development of steel construction, built a large number of steel stadiums, airports, railway stations and high-rise buildings, where some Steel building a world-class level, such as the Olympic Games in the National Stadium and other buildings in the fabrication and installation techniques. Disadvantages Disadvantages steel construction quality problems (a) the complexity of the complexity of the steel project construction quality problems, mainly in the range of factors that lead to quality problems, the cause of quality problems are complex, even if the quality is of the same nature , sometimes not the same reason, to analyze, to judge the quality and handling problems of increased complexity. Such as welding cracks, which can occur in the weld metal, heat affected may also occur in the base material, either in the weld surface, but also within the weld; cracks parallel to either weld steel construction in Dongguan can also be perpendicular to the weld fracture can be either cold cracks, the cracks may be hot; also causes improper selection of welding materials and welding preheat or post-heat inappropriate points. Seriousness of the problem of construction quality performance (b) the seriousness of the steel structure projects in: general steel processing factories, the impact of construction carried out smoothly, resulting in schedule delays, increased costs of steel, serious, building collapse, resulting in personal injury or death, damage to property caused by the adverse social impact. Steel plant, Peng Jian steel (certified), Zhuhai, Dongguan City Steel Co., Ltd. provided by Peng Jian Steel. Steel Co., Ltd., Dongguan City, Peng Jian (dgpengjian.cn) is Dongguan, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Peng leader in steel construction with the staff warmly welcome all inquiries negotiations to create Peng build a better future for steel.