[Chai Jin cable tray to recommend the star product - Bridge] into trough cable tray, tray and ladder rack, mesh-type structures such as galvanized steel bridge model, by brackets, corbel and installation accessories and other components. The building can be independently set up galvanized tray tray can also be attached in a variety of building (structure) building materials and pipe rack bracket should reflect strong galvanized bridge structure is simple, beautiful shape, configuration flexibility and easy maintenance features, all Parts should be subject to galvanized, installed in the open air outside the building of the bridge. [Chai Jin cable tray to recommend the star product - the bridge] expansion and contraction problem: As the ambient temperature changes, expansion and contraction of the steel cable tray will appear phenomenon. Outdoor bridge influenced by temperature environment such as the maximum temperature is 40 ℃, the lowest temperature of -20 ℃, the maximum amount of shrinkage cable tray obtained the following formula: Δt = 11.2 × 10-6 × 60deg (degrees) × 1000mm by This concludes: When the temperature difference is 60 ℃, Δι = 0.672mm / m when the temperature difference is 50 ℃, Δι = 0.560mm / m difference in temperature is 40 ℃, Δι = 0.448mm / m engineering design cable tray straight sections should be considered galvanized bridge expansion joint manufacturers, spacing expansion joints take the following advice given: when the temperature difference is 40 ℃ for 50m; 40m when the temperature difference is at 50 ℃; for 40m when the temperature difference is at 60 ℃; [Chai Jin cable tray to You recommend the star product - bridge] bridge fire zone fire safety requirements, must be steel or non-combustible, fire-retardant materials. I produced a series of cable tray are BJⅢ fire bridge. V. Ground 1, the bridge system should have a reliable electrical connection and ground (only metal bridge). 2, when the system configuration should be allowed to use the bridge circuit grounding line meets the following requirements. Connection resistance between the ends of the bridge should not exceed 0.00033 ohms, grounding hole should remove the insulation coating. Galvanized tray, cable tray manufacturers preferred Chai Jin (certified), provided by the Tianjin Xianyang bridge Chai Jin galvanized cable tray Limited. Chai Jin Tianjin cable bridge Limited (www.tjcjdlqj.com) is Tianjin, metal building materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chai Jin leader in cable tray with the staff warmly welcome all inquiries negotiations to create Chai Jin cable tray a better future.