Steel construction, Peng Jian steel (certified), Hebei Steel by Steel Co., Ltd., Dongguan City, Peng Jian. Steel Co., Ltd., Dongguan City, Peng Jian (dgpengjian.cn) is specialized in the "Steel" of the enterprise, the company adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. Xu. Some designers in the design description often wrote: using pressure-type high-strength bolts 10.9S, this is an incorrect statement. For designers of high-strength bolts as long as the given performance level anti-slip coefficient of friction surface and connecting material can be, do not require manufacturers in what bolts. "Hongdan twice backing, mixed paint twice Overlay" This description makes clear paint brand (Hongdan variety) steel plant, the film thickness is unknown (coating thickness of each layer should be specified). Also standard is too low, which is the standard 60 years ago, there are still people so used, description of the corrosion is not valued. For corrosion protection, we want to determine the corrosive environment of steel structures; 2, determine the protection of steel structures protection period; 3, to determine the thickness of the paint and varnish varieties. So, after steel production steel surfaces should be sand-blasting, can be painted after rust paint anti-rust paint and surface steel building, designed to be given appropriate supporting different coating thickness depending on the environment. Such steel rust are better reflected. First, steel residential building energy than conventional buildings to better meet the requirements of large bays separated by flexible, and by reducing the cross-sectional area of ??the column and the use of lightweight wallboard, improve area utilization, effective use of the indoor area increased by about 6 %. Second, the energy saving effect, using light energy saving wall standardized C steel, square steel, steel sandwich panel factory, good insulation properties, good seismic degrees. Saving 50%, three, the steel structures for residential buildings can take advantage of the ductility of steel, plastic deformation ability, with excellent wind seismic performance, greatly improving the safety and reliability of residence. Especially in the event of an earthquake, typhoon disaster case, steel buildings collapse can be avoided destruction. Fourth, the total construction light weight, light weight steel structure housing system, which is about half of steel concrete structures, can greatly reduce the cost basis. Fifth, the construction speed, shorten the construction period than the traditional housing system, at least one-third of a 1,000 square meters just 20 days, before the completion of five workers.