China Inflatable Rubber Mandrel for Making Culvert

Product Description
Inflatable rubber core mold used for construction projects which is produced by adopting high strength rubber air-bag technology can replace wooden core mold when pouring air-core reinforced concrete prefabricated parts. This kind of core mold is easy to install and disassemble, and it can be cleaned repeatedly, greatly saving the work time and materials used in wooden core mold, which is suitable for large reinforced concrete hollow slab inner mold, so it can be used in the project of building bridge, culvert and concrete hollow slab.Specifications
1.High strength,anti-aging
2.Good air tightness,safety and reliability
3.Repeated use more than 100 timesThe structure of inflatable rubber mandrel: the normal types of inflatable rubber mandrel are one fabric two rubber and two fabric three rubber.Shapes
Technical parameters :ItemsIndexThickness of rubber and fabric, mm2.4mm - 15mmHardness(Shore A)65 ± 5Adhesive tension of rubber and fabric, N/25mm≥8Tensile strength, MPa≥12Elongation at break, %≥350300% Stretch set length, MPa6Stretch for deformation ratio≤20 % (Prevent distortion)Suitable temperature, °C-10 to 80AppearanceNo cracks, no bubbles on the surface, the length of impurities trace is not more than 3mm, the depth is not more than 1.5mm, and quantity of the trace is not more than one. The deformation is not more than 2mm.
Operating Pressure:Diameter/mmInflation pressure/mpa800.121200.101500.08160-1900.08200-2200.072300.06240-2800.05300-3700.045380-4800.04500-5200.035550-6000.03620-6800.0257000.028000.029000.01510000.015
Package:Application of inflatable rubber core mold :
Inflatable rubber core mold is usually used in reinforced concrete members, bridge construction, irrigation works and tunnels, such as stake, roof, roof board column, beam, building, water conservancy project (shipyards, slipway, dock).