SF comb steel telescopic device (comb-shaped joints) Specification: 1) stretching large, shallow buried steel comb-shaped expansion joint device is designed to allow expansion volume 40 ~ 1000mm for a variety of non-current beam structure, Different span of the new bridge and old bridge alteration, wide stretch capacity, range. Comb-shaped steel expansion joint device, the overall structural height 30 ~ 40mm. Each end of the beam without changing the original structure, shallow buried anchor strength can be achieved effectively. In general, the amount of stretching> 80mm bridge after GQF-L40-type expansion joints, other types of telescopic device overall height high, shaped steel telescopic device overall height> 250mm. Design must be the end of the beam structure for special treatment, while increasing the difficulty of construction and therefore, telescopic large, shallow buried telescopic device clearly showing that this unique technological advantage. 2) Comb type automatic slag gap stretching all the different types of telescopic device, the prevalence of a common problem. There are gaps in the telescopic ash, hard blockage, seriously affecting the normal time of the telescopic beam. Comb-shaped steel expansion joint device, due to the special processing structure, retractable comb gap is sided end face of the beam GQF-L60-type bridge expansion joints, while the bottom surface of the comb-shaped stainless steel slide cushion, ash and hard objects only left on the surface, so to comb plate by means of expansion process and the role of the vehicle, automatically ash, hard stretch exhaust gap, so as not to cause congestion, without manual cleaning, without affecting the normal of telescoping beam. 3) has excellent waterproof, dustproof performance. Comb-shaped steel expansion joint device settings Layer neoprene waterproof layer, and waterproof ointment poured in a comb-type steel telescopic gap, achieve excellent waterproof and dustproof effect joints, effective protection of bridge structures and delay branch Block corrosion and prolong the life of the bridge. 4.) telescopic device and the road overall performance is good steel comb-shaped device using flex-rigid joints and other measures to eliminate more thoroughly Jump in the car driving conditions GQF-D40-type bridge expansion joint from the construction, expansion means the use of high-grade concrete strip on both sides of the rigid protection, good rigidity. Thus, the vehicle stable, no shock and vibration, reducing the impact of the bridge, reduce noise and prolong the useful life of bridges and vehicles. The company long bridge stretching the amount of 0-80mm bridge expansion joint device expansion joint device GQF-C type, GQF-Z type, GQF-F type, GQF-L-type, C-type telescopic device are formed by two side beams (, Z, F-type, L-type hot-rolled shaped steel) and the rubber sealing strip composition, easy to install, for stretching the amount of 0-80mm bridge. Gallop bridge, bridge GQF-L60-type expansion joints, expansion joints provided by the Road and Bridge Engineering Co., Ltd. Hengshui Gallop. Hengshui Gallop Road and Bridge Engineering Co., Ltd. (www.hsjllq.com) (www.china-2000.com) located in Hengshui City, Hebei Province Lake District. Scraps and development in the wave of market economy, the current Gallop Bridge has a high profile in the other, and enjoy a good reputation. Gallop Bridge made the whole network business alliance certification, marking our service and management level has reached a new height. Gallop Bridge staff willing to work with all people of insight and common development, for a better future.