Bridge telescopic device product manufacturers offer [sized bridges and bridge expansion joints GQF C type / F type bridge expansion joints, etc.] and 80 type 160 What is the difference? 160 refers to the width of expansion joint 160mm? 80 refers to the width of the joints 80mm? Expansion joints in accordance with the performance and installation methods can be divided into: GQF-C type, GQF-Z type, GQF-L type, GQF-F type, which GQF-MZL number of model type bridge expansion joint device is integrally formed hot-rolled shaped steel bridge expansion joint device design. GQF-C type, GQF-Z type, GQF-L type, GQF-F-type expansion joint device for stretching the amount of 80mm below the bridge joints, GQF-MZL-type expansion joint device the Modular bridge expansion joint device by the side beams, beams, beams and linked institutions, and for stretching the amount of 80mm-1200mm of large and medium span bridges. According to the above classification, 160 refers to the width of expansion joint 160mm, 80 80mm refers to the width of expansion joint statement is right. Basic requirements (1) Expansion Joint slotted law. That first bridge deck pavement construction, bridge stretching device product manufacturers offer [sized bridges and bridge expansion joints GQF C type / F type, etc.] after notching install expansion joints in asphalt concrete pavement to control the telescopic range and expansion joints in the concrete itself, flatness and elevation. (2) joints should be installed when the temperature is the annual average temperature. When installing temperature and annual mean temperature difference between the larger joints that affect normal use, the manufacturer shall, under the guidance of engineers, remove the clamp, jack alignment gap stretch to conform to the requirements, then the placement of fixtures fixed, to prepare for installation. (3) After the installation of expansion joints seam surface must be flat, vertical and horizontal slope meet the design requirements, and with both sides of the asphalt concrete pavement smooth convergence. (4) Do not directly connected with the side beam joints in concrete embedded steel welding. (5) bridge telescopic device product manufacturers offer [medium-sized bridges and bridge expansion joints GQF type C / F type, etc.] must be properly stored prior to installation of expansion joints, without deformation and contamination. (6) construction is forbidden to air compressors, generators and other power equipment is placed directly on the road, all machinery must take effective measures to prevent oil pollution road. After (7) installation, you must ensure asphalt concrete expansion joints around clean, no pollution, no damage. (8) Install expansion joints should not affect the roads open, needs ahead of prompt, not a security incident. Set the width of the bridge over the car to have a certain width. 2.2, construction technology and methods (1) A pre-installation site preparation familiar with the drawings and installation procedures, inspection, acceptance joints shaped side beams flatness, straight degrees and sew body clearance. B mechanical equipment, small equipment equipped. In particular to provide construction vehicles passing the bridge must be solid quality and sufficient quantity, to ensure the smooth construction. C Bridge telescopic device product manufacturers offer [medium-sized bridges and bridge expansion joints GQF type C / F type, etc.] complete with an ample supply of the road to prevent contamination of canvas, plastic sheeting, tape and other materials. D complete with an ample supply of conservation with a plastic film, grass thatch child, carrying water tools