Dongguan Steel Works | Peng Jian steel (certified) | Zhongshan Steel by Steel Co., Ltd., Dongguan City, Peng Jian. Steel Co., Ltd., Dongguan City, Peng Jian (dgpengjian.cn) is specialized in the "Steel" business, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. Xu. Steel inherent problems; a unit in the processing of a building pillar box 1200 * 1200 * 60 in Dongguan steel construction, welding process in 60mm appeared suddenly found tearing as web plate, clearly visible The crack in the thickness direction of the board in half, NDT inspection after cracks were found at a depth of 3mm depth occurred around the same time on the same batch of the same type of cutting board another few components were tested and found board memory mezzanine steel, rolled Quality is the main cause of poor system quality issues. In the process of welding stresses due to welding welding materials produced by the mezzanine opened. Hence there slab thickness direction tearing phenomenon Analysis: Due to the special nature of the use of the site, as a member of the components in the web using steel construction, welding the longitudinal direction of the upper and lower parts of the welding form Open full penetration groove force of stiffeners, due to the existence of a layered interior panels, welding welding stress generated thereby releasing tear out the thickness direction of the board. According to the actual situation may take several measures to deal with the following: 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, increase the area of ??usage, the effective use of the indoor area increase of about 6%. Second, the energy saving effect, using light energy saving wall standardized C steel, good steel, sandwich panels, insulation properties, seismic degrees. Saving 50%, three, the steel structure for residential buildings can take advantage of the ductility of steel, plastic deformation ability, excellent seismic performance wind, greatly improving the safety and reliability of residence. Especially in the event of an earthquake, typhoon case steel construction, steel structure to avoid the collapse of the buildings destroyed. Fourth, the total construction light weight, light weight steel structure housing system, which is about half the concrete structure, can greatly reduce the cost base. Fifth, the construction speed, shorten the construction period than traditional housing system, at least one third, a 1,000 square meters just 20 days before the completion of five workers.