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Quick Details

  • Place of Origin: Hebei, China (Mainland)
  • Brand Name: DACHENG
  • Model Number: 50mm-2700mm
  • material: vulcanized rubber
  • Size: according to client's required

Packaging & Delivery

Packaging Details carton or according to the customers' requirements.
Delivery Time within 6 days

 Description of  inflatable rubber formworks/mandrel :


Rubber Inflatable Airbag is a kind of production of processed polymeric materials. It is formed by two layers of synthetic rubber and one layer of high-tenacity synthetic fibre fabric in the middle as compression stress structure; it is vulcanized as various sizes and shapes of pressure-proof Rubber Inflatable Airbags.


Application of   inflatable rubber formworks/mandrel :


It can substitute the wooden or steel mandrel used for pouring the hollow of large reinforced concrete structure. It is widely used in bridge construction, irrigation works and tunnels.


Features of   inflatable rubber formworks/mandrel :

  1. High compression strength
  2. High elasticity
  3. Strong air tightness
  4. Used repeatedly for many times
  5. Lower cost


Technical parameters of inflatable rubber formworks/mandrel :




Terence of Thickness, mm


Hardness(Shore A)


Adhesive tension of rubber and fabric,N/25mm


Tensile strength, MPa


Elongation at break, %


300% Stretch set length, MPa


Stretch for deformation ratio

≤20 %(Prevent distortion)

Suitable temperature,°C



No cracks, no bubbles on the surface, the length of impuritiestrace 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.



Types o inflatable rubber mandrel :


It can not only save materials, but also has the shape characteristics, as it could be round, rectangle, octagon, hexagon, trapezoidal pipeline, etc. 

Schematic cross section for pneumatic rubber core model:




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China (Mainland) | Manufacturer, Trading Company
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