Steel construction flyover 1) machinery and equipment semi-automatic cutting machine, hand presser bar drill, grinder, angle grinder, 25t wheeled cranes, truck steel canopy, flatbed trailers, welding, gas welding equipment. 2) The main equipment wedge, pulley, down the chain, jack, arc gouging, rope, snap ring, rope clips, feeler, steel tape and water level, such as foot tower. 3) raw material production process at the factory according to the design requirements for correction, lofting, cutting (cut-and-gas cutting), slag straight parts, planing, drilling, semi-classification stacking, clean up the oil groove rust, steel splice welding, ultrasonic testing, flattening, weld inspection, the inspection geometry. Will meet the design specifications of semi-finished and shipped to the site. Steel prefabricated steel construction issues, a model of dimensional accuracy and sophistication cutting line cutting use will directly affect the quality of component size prefabricated, steel production in the pre-construction. At the same time cutting and cutting should allow sufficient allowance. From raw materials, after cutting member to preform molding, corrections and shaping the steel construction throughout every step of the process. If embarrassed Organisation correct process, the next step of the construction will not be guaranteed. Correct style pattern varied, often adopted in accordance with the specific circumstances of steel, but the correct one of the most commonly used heating means in which, since the heating temperature is too high, the material often leads to the occurrence of the change of the material, and water is often used to force after heating cooling steel design specifications, even heating zone to produce hot brittle phenomenon. Plates, profiles due to the length restricted. Because of the self-test disassembly, spliced ??between the various processes the order is unreasonable or not strict, and often not even too large deformation correction. Because node does not match, the rift is too large or splicing process is unreasonable. Member is in the stitching. Often resulting in a total length after stitching prefabricated structure distortion. After making the mosaic structure span splice ban. Scantlings stitching or a small spell before the members are not allowed to cumulative deviation is too large. After the completion of steel or precast. Arising as a result of the collision died bend; stacking, because the pad layout is unreasonable point or altitude settlement produce death or slow bend bend. Steel mounting feet because of the identity of the weld large steel columns or column base plate is too thin, the foundation elevation deviation is too large or is not leveled foundation details will directly affect the level of the column assembly, vertical, horns and horn blocks composite length. At the same time. Welding process contraction deformation, so that the bottom plate warping, thus affecting the quality of the column assembly. Often resulting position error column axis. Position deviation position foundation anchor bolts or studs are not allowed floor bolt hole is too large. Because the underlying structure of the unit capitals axis offset, when tall steel structure installation. Fulfilling base structure assembly, in order to ensure consistent up and down the column axis, the following layer column centerline axis of the upper column as a baseline installation, making the grassroots capitals axis deviation is too large. Should be finished in time for the installation of pre-assembled components or structures perform proofreading and permanent flow of steel canopy | Peng Jian steel (certified) | Steel Co., Ltd., Huizhou, Dongguan City, Peng was built by 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.