Dong Xin Hengshui bridge parts factory is a company with research and development, production, marketing, consulting and application services in one specializing in the production of multipurpose balloon container products owned enterprises. Located in rural Hebei Hengshui rubber, the company has professional and technical personnel, with professional equipment, steam boilers, closed mixer, open mixing machine, four-roll calender, large flat vulcanizing machine. With advanced equipment and professional welder welder team. The company's main products: rubber inflatable mandrel: when watering hollow precast reinforced concrete can replace wood or steel mandrel inflatable mandrel for easy installation and removal, can be repeatedly used for more than 60 - 90 times, greatly save time and material. Adapted to the road, rail bridge prestressed hollow beam placement, tunnels and culverts sewage drainage canals, dams and other large building materials and construction of reinforced concrete structures Seepage_intercepting of flood prevention work. Pipe sealing bag: Closed water blocking, plugging breath for sewer cleaning, water drainage, in addition to silt maintenance, testing pipeline under pressure. Bridge building bearing: rubber bearings, pot rubber bearing, isolators, bearings and other steel bridge cradle. Bridge expansion joints: bridge expansion joints generally have docking, steel bearing type, the combination of shear (plate), and the elastic modulus-bearing device. Dong Xin Hengshui bridge parts factory is a vibrant and enterprise can flourish. We uphold the "people-oriented to quality of survival," the guiding ideology, and strive to achieve systematic organization, decision-making more scientific and standardized management, work procedures, standardized efficient development goals. Dong Xin Hengshui bridge parts factory, specializing in the production of bridge parts, since its inception, with excellent quality and full service and win new customers. Use of inflatable mandrel Notes 1, before use of inflatable mandrel, first check the steel cage wire connectors and wire rolling head can not be bent radially inward direction, in order to avoid pricks mandrel to form an air leak. Before pouring concrete reinforcement cage bottom cushion, then pull the rope to a mandrel steel cage, and the longitudinal seams facing up. 2. Note: You must brush when the balloon mold release agent used in order to reduce pumping mold resistance, airbag not allowed to use oil instead release agent, while oil for rubber erosion, another oil will pollute the bars. Diluted with soap and water, the effect is ideal as a release agent. Soap powder and water ratio is about 1:20 3, inflated to a predetermined pressure to open the valve to close the valve, should not be over-pressure. 4, shaped mandrel should be alternately inflated through a predetermined pressure. 5, will enter a steel cage around the mandrel up and down to be fixed. Overcome the buoyancy and move around. 6, after the pouring of concrete, using a vibrating rod vibration from both sides at the same time, preventing move around the mandrel. And the vibrator section head not touch the core module, so as not to puncture the leak. 7. After the initial setting of concrete, open rubber inflatable mandrel bleed valve, you can extract the core mold. (Demold time customized according to the construction case) generally as follows: when there is a clear fingerprint pressed the belly of toilet paper before releasing.