Features a material of high strength, light weight and high strength of steel itself, a high modulus of elasticity. Compared with concrete and wood, the ratio of its density and relatively low yield strength, and thus subject to the same small member section of steel structures under stress conditions, light weight, easy to transport and install, suitable for large span, the height of the high steel metal room, carrying the weight of the structure. 2, the toughness of steel truss steel manufacturers, plastic, uniform texture, structure and high reliability suitable to withstand shock and dynamic loads, with good seismic performance. Steel internal organizational structure is even close to the isotropic homogeneous body. The actual performance of steel structures more in line with the theoretical calculation. So high steel reliability. 3, steel manufacture and installation of a high degree of mechanization in the factory to facilitate the manufacture of steel components, assembled on site. Mechanized factory finished steel components manufacturing high precision, high production efficiency, site assembly is fast, short duration. Steel is the most industrialized of a structure. Divided by the force characteristics: friction type and pressure type friction type high strength bolt connection is based on the friction force is transmitted between external design limits, when shear is equal to the friction of steel manufacturers, extremely high strength bolted friction type loads. Thousands of bars at this time does not occur slip, rod bolts from shear bolt hole wall is not under pressure. Pressure type high strength bolts similar to ordinary bolts, shear can exceed friction, this time happens to be the connecting member relative slip between the bolt hole wall in contact with the rod, connecting rod bolt rely on friction and shear, pressure joint force transmission. Pressure type high strength bolts large deformation, not for direct connection to withstand dynamic loads structure. Lightweight steel construction steel manufacturers _ Peng (certified) provided by the manufacturers of steel _ Huizhou, Dongguan City, Peng Jian Steel Limited. 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.