Control systems bridge expansion joints displacement control system SG-type bridge expansion joint device is divided into two in parts: First, expansion joints and bolt anchors in the side and bottom surfaces of the beams supporting beams activities, both to control the largest full match the amount of displacement; the second is provided with bolt retainer d160 Maurer joints on separate web-beams, bridge expansion joints when the gap stretched to the maximum value is limited by the bolt, when the spring is compressed to a minimum Block collide to control. In addition, the bridge expansion joints within the web in the spring seat setting mandrel rod, with a specially designed spring to control the displacement equidistant between each unit (ie, the guarantee of each slit stretching uniformity method - manufacturers Note) constructed As shown in Figure 5-10. The main components shaped steel American Watson (wotson) bridge expansion joint device bridge expansion joints, that edge beam, the beam are made of high-quality corrosion-resistant carbon steel (ie conform to ASTM A-588 standard steel) and manufacturing. Steel Pass using CNC turning from gqf-c-40 expansion joints, pass standard for comparison. Bridge expansion joints rubber seal embedded solid reliable gqf mzl80 type expansion joints, waterproof performance,, are units of modulus 80mm box-shaped and divided the country in two forms based on a bird-shaped rubber seal shape. The basic structure of the bridge expansion joints and design parameters are: 5-23 and list box as shown in Table 5-10; 5-24 listed and bird-shaped as shown in Table 5-11. 80 bridge expansion joints, expansion joints, Fuzhou City, Hengshui Hao-production and marketing provided by Hengshui HaoTong Rubber Company. Hengshui Hao-Engineering Rubber Co. (www.htgcxj.com) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement through innovative ideas will lead Hao engineered rubber and you hand in hand into the brilliant, for a better future!