Chai Jin Tianjin Cable Bridge Co., Ltd. [] (2) load calculation: Calculate the cable tray on the main trunk cable weight per unit length profile. (3) to determine the width of the bridge: according to the number of cable laying, cable diameter and the cable spacing to determine the length of cable bridge models, specifications, the length of the supporting arm, strut pitch galvanized fire bridge, bridge width and layer number. (4) Determine the installation: Depending on the setting conditions to determine the place of the bridge fixed way, suspensory, upright, sidewall, or hybrid, fittings and fasteners are generally supporting the supply, in addition to which fire bridge have sold, according to the bridge structure is selected corresponding cover off. (5) draw cable tray level, sections, local site also drawn map, list of materials. 4, cable tray installation requirements (1) trough large span cable tray from the outdoors into the building, bridge outward slope of not less than 1/100. (2) cable trays and electrical equipment when the fire bridge crossing Which is better, the spacing between them is not less than 0.5m. (3) two cable tray laid in parallel at the same height, spacing therebetween is not less than 0.6m. [Chai Jin Tianjin Cable Bridge Co. With the increasing popularity of smart phones and other mobile devices, 3G users has reached 480 million person-scale, market size 3G Internet is as high as 500 billion yuan, such a large consumer group, whether For the industry, which is a potential huge "cake" fire bridge, therefore, on-line portal Chinese cable tray, cable tray will help enterprises to seize the 3G Internet market opportunities. Industry insiders believe that, in today's rapid development of mobile Internet, to carry out 3G marketing has become an effective way to open up the industry to new markets and new sales channels. On-line cable tray Chinese portal, will promote the cable bridge electricity supplier industry for the direction of development, to promote the level of information technology to improve the industry and help promote the transformation and upgrading cable tray industry. Strong electrical fire bridge _ _ Shijiazhuang fire bridge leading manufacturers Chai Jin Chai Jin cable tray cable tray from the Tianjin Co. Chai Jin Tianjin Cable Bridge Co., Ltd. (www.tjcjdlqj.com) strong, credible, in Tianjin metals and building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chai Jin cable tray and you hand into the brilliant, for a better future!