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Circular Inflatable Rubber Core Mold (made in China)

Payment Type: L/C, Western Union
Min. Order: 1 Bag/Bags

Basic Info

Model No.:  Diameter range 150mm-2500mm

Product Description



Model NO.: Diameter range 150mm-2500mm


Material: Rubber with Canvas


Color: Black


Usage Place: Tunnel/Culvert/ Precast Beam Construction


Business Type: Factory Manufacturer


Specification: As Drawing Requests


HS Code: 5522233




Usage: Concrete Pipe Making


Shape: Round, Rectangular, Square, Octagon


Certificate: ISO9000


Urgent Order: Yes


Trademark: JianFeng


Origin: Hebei, China


Contact information

Sales Manager: Miss Anna Lee

Mobile Phone: +86-15132836877

Tel: 86-318-5106277

Fax: 86-0318-5106277

Website: www.prolianz.com

Company: Hengshui Jianfeng Engineering Rubber Co., LTD.







Description of bridge air core mold





Inflatable Rubber Mandrel, also called inflatable rubber core mold or inflatable rubber formwork, is similar to
a marine airbag, but different in usage - that is to form cavities for large reinforced concrete structures
including bridge, tunnels, roof, stake, roof board column, beam, building construction, irrigation works and
water conservancy projects, etc. In this way, 20% weight of building structure is reduced than those with
solid concrete structures.
Meanwhile, inflatable rubber mandrels shorten the pipe foundation, increase span as well as provide a
simpler and safer construction.








Shapes of bridge air core mold



bridge air core mold can be divided into many kinds according to its shape: round, rectangle, octagon,

hexagon, trapezoidal and so on. And round inflatable rubber mandrel and octagonal inflatable rubber mandrel

are common used in most projects.







Features of bridge air core mold





1.High strength to withstand the pressure of concrete when the mandrel is inflated.
2.Quality synthetic rubber and natural rubber materials make the mandrel durable, long lasting, flexible and
elastic.
3.Save materials, time and efforts.
4.Soft to fold, curly, contract and store.
5.Various shapes including round, oval, rectangular, vaulted, trapezoidal, etc.
6.Great resistance to aging and bulge.
7.Wide applicable temperature ranging form 10°C to 90°C.
8.Easy and convenient to operate - only place mandrels into negative reinforcement cage, inflate them to
appropriate work pressure, pour concrete and deflate the mandrels until the concrete is solid, then pull the
capsule out.










Details of bridge air core mold



Diameter: 150mm to 28000mm.

Total length: 0.8m to 35m.

Other specifications are also available upon customers' requests.









Properties of bridge air core mold




Items Index
Thickness of rubber
and fabric, mm
2.4mm - 15mm
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, MPa 6
Stretch for deformation ratio ≤20 % (Prevent distortion)
Suitable temperature, °C -10 to 80
Appearance No 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.








The structure of bridge air core mold: the normal types of bridge air core mold are one fabric two rubber

and two fabric three rubber. What's more,we can also produce other types of inflatable rubber mandrel

according to customers' requirements.

Contact us if you need more details on Circular Inflatable Rubber Core Mold. We are ready to answer your questions on packaging, logistics, certification or any other aspects about China Inflatable Rubber Core Mold、China Bridge Air Core Mold. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Inflatable Rubber Mandrel