Product Description


The rubber inflated culvert balloon, also known as the bridge inflatable core mold, is an expandable and contractible cylindrical bag made of rubber with a fiber-reinforced layer, featuring excellent tensile strength, elasticity, and air-tightness. It is primarily used to form cavities in concrete components.
When manufacturing hollow components, the inflatable core mold is placed in the middle of the component and is expanded by injecting compressed air. The inflated core mold can withstand the pressure of concrete, thus effectively replacing traditional wooden, bamboo, and steel molds. When in use, simply open the valve, and the airbag will deflate, making it easy to remove from the cavity.
Shape of rubber inflatable core mold
Production Process
The production process of rubber inflated culvert balloon is divided into two types: cold bonding process and hot pressing vulcanization process.
- The cold bonding process involves first processing the raw materials into sheets (or purchasing finished rubber sheets), then cutting them into corresponding pieces according to the shape of the inflatable core mold, and finally adhering them together with adhesive to form the inflatable core mold.
- The hot-press vulcanization process involves directly vulcanizing natural rubber under heat and pressure, combined with anti-tear fabric, to form the specified shape of the inflatable core mold in a single molding process without any seams.
Product Parameters
Table 1: Rubber Inflated Culvert Balloon Specifications
Round φ220 mm × 8.5 m |
Round φ260 mm × 10.5 m |
Round φ360 mm × 14 m |
Round φ390 mm × 14 m |
Round φ520 mm × 17 m |
Octagonal φ360 mm × 760 mm |
Reducer φ360 mm × 600 mm × 11 m |
Octagonal φ460 mm × 760 mm |
Reducer φ460 mm × 600 mm × 14 m |
Octagonal φ560 mm × 760 mm |
Reducer φ560 mm × 600 mm × 17 m |
Octagonal φ710 mm × 760 mm |
Reducer φ710 mm × 600 mm × 21 m |
Octagonal φ560 mm × 780 mm × 17 m |
Octagonal φ710 mm × 800 mm × 21 m |
Octagonal φ460 mm × 550 mm × 14 m |
Oval φ360 mm × 520 mm × 17 m |
Oval φ360 mm × 480 mm × 14 m |
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FAQ
1.When can I get the quotation?
A:We usually quote within 24 hours after we get your inquiry.
2.How long can I expect to get the sample?
A:The samples will be ready for delivery in 5-10days. The samples will be sent to you via express and arrive in 5-7days.
3.How long is the delivery time
A:Usually 10-15 days, depending on the quantity purchased.
4.How can I get a sample to check your quality?
A:After negotiating the price, we will provide you with samples for testing.
5.What's payment term?
A:T/T, L/C at sight, Western Union, Paypal, Moneygram