[Highway bridge expansion joint device & C-type expansion joint device] to find low-cost high quality manufacturers choose us 15297607517 highway bridge expansion joints structure, performance and installation: Road bridge expansion joints 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 devices, is the use of hot-rolled steel bridge expansion joint device shaped the overall shape of the design. GQF-C type, GQF-Z type, GQF-L type, GQF-F is suitable for stretching the amount of 80mm below the bridge joints, GQF-MZL type telescopic device is by the side beams, beams, beams and linked institutions of Modular bridge expansion device component, for stretching the amount of 80mm-1200mm of large and medium span bridges in the matter of expansion joints in the transport, storage and installation of attention, the user must pay attention. Bridge expansion joints code representation and significance Example: In GQF-C60 (CR) as an example, where the C type, stretching the amount of traffic GQF industry standard for 60mm, neoprene type. Example: In GQF-z80 (NR), for example, where z type, stretching the amount of traffic GQF industry standard for 80mm, natural rubber type. Example: In GQF-MZL480 (NR), for example, [highway bridge expansion joint device & C-type expansion joint device] to find low-cost high quality manufacturers please choose one of our MZL type, stretching the amount of traffic GQF industry standard for 480mm , natural rubber type. Road bridge expansion joints code representation produced by our company and People's Republic of China Communications Industry Standard representation consistent .NR and CR represent types of rubber: NR natural rubber represented, CR represents neoprene on the design and manufacture a bridge expansion joints, a variety of Bridge stretching device design loads are based on national JTJ01-88 (1995) "Highway Engineering Technical Standards" provides the car over 20 design load. 2, [highway bridge expansion joint device & C-type expansion joint device] to find low price high quality manufacturers select our use of shaped steel bridge dedicated 16Mn steel, steel tensile strength should not be less than 480Mpa. 3, the support beam using special steel bridges using 16Mn or 45 steel, which allows the bending capacity of not less than . 210Mpa 4, parts of steel used may be used with less than Q235 strength steel telescopic device used rubber Scope: 1, chloroprene rubber (CR) of the expansion joint device for temperature of -25- + 60 region 2, the use of natural rubber (NR) in the expansion joint device for temperature of -40- + 60 area stretching joints to determine the amount calculated values ??for the amount of stretching a direct impact on joints specification is selected, if the amount of stretching select unreasonable, directly affecting the effect of extending the use of the product, at the same time select road bridge expansion joints should also consider the beam, the amount of clearance between the plates telescopic device size, in order to ensure expansion joint devices and beams, plates fully anchored at both ends, in order to achieve the best results. So When selecting joints specifications, be sure to leave sufficient margin to ensure the use of expansion joints and durability. (Detailed bridge expansion joints domestic product)