Pneumatic Inflatable Rubber Mandrel for Culvert Shutter
|FOB Unit Price:||US $630 US $320|
|Purchase Qty. (Pieces)||FOB Unit Price|
|Production Capacity:||5000 Pieces Per Month|
|Transport Package:||Wooden Case or as Customer′s Requirements|
|Payment Terms:||T/T, Western Union|
- 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
Pneumatic rubber mandrel is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity.
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, mm||3.2±0.2|
|Adhesive tension of rubber and fabric,N/25mm||≥8|
|Tensile strength, MPa||≥12|
|Elongation at break, %||≥350|
|300% Stretch set length, MPa||6|
|Stretch for deformation ratio||≤20 %(Prevent distortion)|
|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.