[Chai Jin cable tray to 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 be less than the price of 0.00033 ohm galvanized tray, grounding holes should remove the insulation coating. [Chai Jin cable tray to recommend the star product - bridge 2, such as when combined with the power cable tray, power cables and electronic cables should each straight side, separated by an intermediate diaphragms. 3, weak cable and other low-voltage cable tray manufacturers of galvanized bridge in combination, should be strictly enforced outer shield choose a weak system of weak cable to avoid mutual interference. [Chai Jin cable tray to recommend the star product - bridge] 5. Materials Statistics (1) bridge: the statistics of the various models, respectively, the total length of the bridge, in addition to a standard length of the bridge, draw the number of trays outside, an additional 1% -2% of the balance. (2) Column: Column as a unified specification, available divided by the average total length of the bridge column spacing hot dip galvanized bridge, draw the number of columns, and then increased by 2% to 4% margin. Different specifications such as columns, you need statistics separately. (3) supporting arm: total length of the bridge dividing the average distance between the supporting arm, and then increased by 1% to 2% margin, extremely total demand. (4) Other components: its body multiplied by a certain percentage (depending on the plant may be) to obtain the total number. Galvanized tray price, Chai Jin professional production of bridge (certified), Chengde bridge provided by the Tianjin 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.