Gold Member Since 2011
Audited Supplier
Zaoqiang Dacheng Rubber Co., Ltd.

Inflatable Rubber Mandrel, Rubber Balloon, Inflatable Balloon manufacturer / supplier in China, offering Reinforced Rubber Balloon for Culvert, Lead Rubber Bearing for Construction and Bridge, Elastomeric Rubber Bearing Pads for Bridge and so on.

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Supplier Homepage Product culvert airbags Reinforced Rubber Balloon for Culvert

Reinforced Rubber Balloon for Culvert

Purchase Qty.:
1-9 10+
FOB Unit Price: US $630 US $320
Purchase Qty. (Pieces) FOB Unit Price
1-9 US $630
10+ US $320
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Production Capacity: 5000 Pieces Per Month
Transport Package: Wooden Case or as Customer′s Requirements
Payment Terms: T/T, Western Union

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Basic Info
  • Model NO.: various
  • Material: Natural Rubber
  • Length: Standard or Designed as Requirements
  • Reusability: Yes
  • Specification: Various Specifications
  • HS Code: 4016950090
  • Usage: Culvert Construction
  • Shape: Circular, Square
  • Number of Use: 100 Times
  • Trademark: DACHENG
  • Origin: Hengshui, Hebei Province, China
Product Description
Pneumatic rubber mandrel is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity.

Performance characteristic
1. Design scientific and reasonable used inflatable rubber mandrel, or casting parts, finished product can meet the requirement of design, easy  operation, save time, save material.
2. Have good ageing resistance performance and long service life this product use synthetic rubber ,natural rubber and strengthen layer vulcanize, Has very good resistance to bulge, flexibility and elasticity so can satisfy all sorts of work in the conditions of  use.
3. Widely applicable temperature, within the scope -10ºC-+90ºC of the material without change .
4. For building light-duty construction provides favorable conditions to stress hollow concrete. Component, due to the rubber mandrel ,the weight than use stress solid component light 20%,so it can reducing the weight of the upper structure of building .can make the pipe foundation short. increase span, make the construction become simple and safety.
5. construction technology is simple ,safe, health, use it only need a few simple tools, without special process. 

Technical parameters of Culvert formwork inflatable mandrel 
Terence of Thickness, mm3.2±0.2
Hardness(Shore A)65±5
Adhesive tension of rubber and fabric,N/25mm≥8
Tensile strength, MPa≥12
Elongation at break, %≥350
300% Stretch set length, MPa6
Stretch for deformation ratio≤20 %(Prevent distortion)
Suitable temperature,°C-10~80
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.

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.

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