Hollow Slab Concrete Rubber Airbag Rubber Inflatable Core Molds for Prefabricated Bridges and Culverts

• Customization: Available
• Usage: Bridge/Culvert/Formwork etc.
• Material: Natural Rubber
• Model NO.: JT354IOP
• Type: Hollow Slab Concrete Rubber Airbag
• Brand: Hengjinggong
• Shape: Circle / Rectangle / Ellipse
• Color: Black
• Wall Thickness: 3-5mm
• Application: Bridge/ Culvert/ Formwork etc.
• Transport Package: in Wovenbag on Pallet
• Specification: CE/ISO
• Trademark: HengJingGong
• Origin: China
• HS Code: 40169990
• Production Capacity: 10000PCS Per Year
• Package Size: 100.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 20.000kg

Product Description

Product Description

Rubber Inflated Culvert Balloon for Hollow Slabs

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.

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.

Cross-sectional shape of inflatable rubber culvert airbag

Specification

item	index
thickness tolerance, mm	3.2±2
shore A	65±5
adhesive strengh N/25MM	≥8
tensile strength, mpa	≥12
elongation at break %	≥350
300% constant elongation,mpa	6
stretching deformation rate	≤20%
suitable temperature,ºC	-10-+80
appearance	no crack, no bubble, impurity length≤3mm depth≤1.5mm and no more than one place each meter

Installation

Product Details

Packaging & Shipping

Company Profile

    Hengshui Jingtong Rubber Co., Ltd., located in Hebei Province's Hengshui City, is a professional manufacturer of engineering rubber products. Our product range includes bridge bearings, expansion joints, water stop strips, water stop belts, inflatable cores, building deformation joint device and water plugs, which are widely used in bridge, tunnel, water conservancy, and power engineering projects. The company boasts advanced technology and mature processes to ensure reliable product quality.

    We have a professional technical team and a comprehensive after-sales service system to ensure customers receive high-cost-performance products and attentive service. Hengshui Jingtong Rubber Co., Ltd. is committed to continuous innovation to meet market demands and looks forward to establishing long-term cooperative relationships with customers from both domestic and international markets.

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