Rubber inflatable mandrel for bridge tunnel formwork

PRODUCT DETAIL
model:bn-001tensile strength:>12Mpa
thickness:custom madeapplication:Bridges, Pipelines, Tunnels
Certification:International Organization for StandardizationPackaging Details:Generally, we use ziplock bags or bubble film plus cartons, and wooden pallets or wooden boxes if necessary.
Package preview:payment terms:L/C, T/T
Advantage:good priceOrigin:Hebei china
Material:erasertype:Round and square
product name:Inflatable Mandrelport:Tianjin
size:custom sizeSupply capacity:10000 meters per month
color:Blackbrand:Xu Garden
Product Description
we are factory 
Therefore, if you want to customize an order, please don't forget to provide us with your design drawings, dimensions and standards. We will do our best to meet your requirements.
Product Description
Inflatable mandrel is also called bridge inflatable mandrel. The rubber inflatable mandrel is a cylindrical bag that expands and contracts. It is made of vulcanized rubber and fiber reinforced layers. It has high tensile strength, elasticity and airtightness. It is used to form cavities in concrete elements. When making a hollow part, it is placed in the middle and filled with compressed air. After inflation, it has enough strength to withstand the pressure of concrete, and can replace the original wood, bamboo and steel molds. When the capsule shrinks
The valve opens and the capsule can be removed from the cavity.

application:
It is mainly used in the pouring and molding engineering of concrete pre-tensioning and post-tensioning beams of highway bridges. It is also used in culvert sewage works. The rubber airbag is a kind of stretchable inner mold of different shapes that is vulcanized by using the polymer properties of rubber and high-strength fiber cloth. After the airbag is filled with compressed air, it stretches and expands to meet the design requirements of its section. Inflation pressure and cross-sectional shape can be customized by buyers. It can also be removed from the cavity. It is easy to use, economical and durable, and can be reused many times. It is soft and can shrink fold and curl when not inflated. After inflation, it has enough strength to bear the pressure of concrete. It is suitable for drilling reinforced concrete components, including piles, roof trusses, roof panel columns, beams, construction projects, water conservancy projects (docks, slideways, wharves), etc.
Specification
diameter
Pressure (Mpa)
150
0.08
160-190
0.08
200-220
0.07
230
0.06
240-280
0.05
300-370
0.045
380-480
0.04
500-520
0.035
550-600
0.03
620-680
0.025
700
0.02
1> Diameter (D): Form0.1m-2.2m
2>Total length (TL): Form0.5m-28m
3>Other specifications can also be provided according to customer requirements
Classification
Classification
1. According to the shape: circular rubber bridge inflatable mandrel, octagonal bridge inflatable mandrel, oval bridge inflatable mandrel and rectangular bridge inflatable mandrel.
2. According to usage: bridge inflatable mandrel and tunnel inflatable mandrel.
3. According to whether the diameter is reduced or not: the inflatable mandrel for the bridge with reduced diameter and the inflatable mandrel for the bridge with equal diameter.
4. According to other classification methods: rubber inflatable mandrel, inflatable rubber mandrel, prefabricated bridge slab inner mold, box girder inner mold, bridge inner mold, hollow slab inner mold, hollow slab mandrel, etc.
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