Inflatable Engineering Rubber Formwork for Bridge

Model NO.: Diameter range 150mm-2200mm or Customized


Material: Rubber with Canvas


Shape: Round, Rectangular, Square, Octag


Usage Place: Tunnel/Culvert/ Precast Beam Construction


Business Type: Factory Manufacturer


Specification: As Drawing Requests


HS Code: 5522233




Usage: Concrete Pipe Making


Color: Black


Certificate: ISO9000


Urgent Order: Yes


Trademark: JianFeng


Origin: Hebei, China


Contact information

Sales Manager: Miss Elina Lee

Mobile Phone: +86-15132836877

Tel: 86-318-5106277

Fax: 86-0318-5106277

Website: www.prolianz.com

Company: Hengshui Jianfeng Engineering Rubber co., LTD.





Bridge Rubber Inflatable Mandrel usage from three sides



(1) Location from using bridge rubber core mold, the most to Inner Mongolia, north of the south to hainan, the west to Tibet, the east end to heilongjiang province, it's just for our country the use of the domestic rubber core mold, the more abroad to introduce the use of simple, easy to operate the bridge rubber Inflatable Mandrel;

(2) Bridge using the scope of the inflatable mandrel is slowly expanding, as a kind of new bridgerubber core mould pore forming mold to replace steel and wood pattern, be used as mould by many kinds of engineering, not only in precast hollow slab and the cast-in-place bridge engineering, also used in tunnel, cover plate, culvert etc need into a hole in the engineering;

(3) Ridge rubber inflatable mandrel itself product usage, not only for repeated use, and as long as the deformation, without leakage, also can put after years of continue to use, utilization rate is greatly improved a lot;.





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.

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.

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.

Contact us if you need more details on Air Core Mold. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Inflatable Core Mold、Construction 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