GQF-40-type expansion joints and the price difference between 80-type expansion joints, bridge expansion devices require the telescopic device in parallel, perpendicular to the axis of the bridge in both directions, can freely scalable, secure and reliable vehicle should be smooth too, no sudden jump and noise; to be able to prevent the infiltration of rainwater and mud blocked garbage; installation, inspection, maintenance, eliminate the dirt to be simple and convenient. Set expansion joints, railings and the bridge deck to be disconnected. I produced several models of bridge expansion joints models: GQF-C type, GQF-Z type, GQF-L type, GQF-F type, GQF-MZL type is the use of all hot-rolled steel shaped the overall shape of the design of the bridge expansion joint products. Which GQF-C type, GQF-Z type, GQF-L type, GQF-F type bridge expansion joints for stretching the amount of 80mm below the bridge joints, GQF-MZL-type bridge expansion joint type is by the side beams, the beam , Modular bridge expansion joint device beams and linked institutions, and for stretching the amount of 80mm-1200mm of large and medium span bridges over the expansion joints currently used are: 1, continuous bridge deck expansion joint to reduce Deck the number of joints, increase traffic smooth, continuous bridge deck expansion joint, which are used for multi-span simply supported structure. From the use effect is better, but there are certain issues, such as deck irregular cracks and water leakage, it is proposed to strengthen the sides and in the middle of the range bars set false seam 2 × 1 cm. 2, rubber expansion joints this kind of simple structure, the amount of stretching is generally 4-6cm, through the use of observation ineffective, more frequently, mainly include: strip break off, causing leakage, subsidence or torsion, deformation of the anchor loose , driving there thrashing and noisy. The company shipped every day, Jiangxi: Nanchang, Jiujiang, Jingdezhen, Pingxiang, Xinyu Yingtan, Ganzhou, Yichun Jian 饶山东 on Fuzhou: Jinan, Qingdao, Yantai, Zibo, Weifang, Weihai, Zaozhuang, Jining, Tai'an, Dongying Rizhao Laiwu Linyi Dezhou, Liaocheng, Heze Binzhou South Africa Henan: Zhengzhou, Kaifeng, Luoyang, Pingdingshan, Hebi, Jiaozuo, Xinxiang, Xuchang Anyang, Puyang Suppliers Qiu Xinyang Sanmenxia Luohe Nanyang Zhoukou Zhumadian