Pneumatic/Inflatable Rubber Core Mold for Making Concrete Culvert

• Customization: Available
• Condition: Used
• Certification: ISO9001, ISO, CE
• Model NO.: inflatable rubber core mold 024
• Usage: Tunnel, Bridge, Culvert
• Material: Natural Rubber
• Shape: Round
• Type: Inflatable Rubber Core Mold
• Dia: 450, 600, 900, 1200mm or Customized
• Length: 10m, 15m, 20m, 25m or Customized
• Special Size and Shape: Round, Rectangle, Spheical or Customized
• Usageway: Tunnle/Culvert/ Precast Beam Construction
• Certificated: ISO 9001, SGS
• Urgent Order: Yes
• Feature: Rubber+Strength Cloth, Long Serice Time
• Business Type: Factory Manufacturer
• Transport Package: Plastic Bag, Then Pallet Delivery
• Specification: Custom
• Trademark: HengJingGong
• Origin: Hengshui, Hebei, China
• HS Code: 40169990
• Production Capacity: 10000PCS Per Month
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 60.000kg

Product Description

Product Description

is a specialized pipe construction and maintenance equipment manufactured from high-strength rubber materials with advanced production techniques, achieving temporary plugging or support inside pipelines through inflation and expansion. This innovative engineering device exhibits excellent flexibility and sealing performance, enabling rapid deployment under various complex pipe diameters and working conditions to provide safe and reliable temporary isolation solutions for pipeline inspection, repair, and rehabilitation operations. The adopts a multi-layer composite rubber structure with built-in high-strength fiber reinforcement layers, ensuring exceptional pressure-bearing capacity and dimensional stability in the inflated state. It can withstand external water pressure, soil pressure, and construction loads while maintaining tight contact with pipe walls, effectively preventing fluid leakage and sediment intrusion.

As a highly specialized pipeline engineering device, the inflatable rubber culvert balloon fully considers actual construction site requirements in its design. Its unique foldable storage design significantly reduces volume in the non-inflated state, facilitating transportation and storage. The quick-inflation interface design supports multiple air source connections and can complete inflation operations within a short time, substantially improving construction efficiency. The surface of the undergoes special treatment, providing good wear resistance and corrosion resistance to adapt to different media environments including sewage, stormwater, and chemical wastewater. The widespread application of this device in municipal pipeline maintenance, transportation tunnel construction, and industrial pipeline inspection fully demonstrates the important value of inflatable rubber culvert balloon as an essential tool in modern pipeline engineering.

Features
    *The adopts a premium blend formula of natural and synthetic rubber, offering excellent elasticity and rebound resilience for hundreds of repeated uses.
    *Multi-layer cross-wound cord reinforcement layers provide the inflatable rubber culvert balloon with exceptional burst resistance strength and dimensional stability.
    *The unique double-sealing edge design enables tighter contact between the inflatable rubber culvert balloon and pipe walls for more reliable plugging effects.
    *The surface of the features anti-slip texture treatment, effectively preventing displacement and rolling during installation.
    *Equipped with multiple safety protection devices, including automatic overpressure exhaust valves and pressure monitoring gauges, ensuring safe operation of the inflatable rubber culvert balloon.
    *Wide temperature range capability, operating normally in environments from -20℃ to 70℃, adapting to different climate conditions.
    *The inflatable rubber culvert balloon is lightweight and can be carried and operated by a single person, significantly reducing labor intensity.

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

Product Details

Customer Visit

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 esta  blishing long-term cooperative relationships with customers from both domestic and international markets.

FAQ

Q1: What is an inflatable core form and what is it used for?

A:A reusable rubber-nylon inflatable mandrel used to create hollow voids in concrete bridge girders, hollow slabs, culverts, and tunnels.

Q2: How many times can the core form be reused?

A:80-100+ reuse cycles with proper handling; high-strength rubber-nylon composite resists concrete pressure and abrasion.

Q3: What working pressure does it require during concrete pouring?

A:Typical working pressure 0.02-0.05 MPa; reinforced multi-layer cord fabric ensures no deformation under wet concrete load.

Q4: Can you customize the shape, diameter, and length?

A:Full OEM/ODM: round, oval, rectangular, trapezoidal shapes; diameter up to 2,000 mm, length up to 30 m.

Q5: How is it installed and removed?

A:Inflate into position before pouring; deflate and pull out after concrete sets -- simple, no crane disassembly needed.

Q6: What certifications do you provide?

A:ISO 9001/14001/45001 certified, manufactured under strict quality control with burst-pressure testing for every batch.

Q7: What surface finish does it leave and does it leak air during use?

A:Smooth inner cavity finish; multi-layer vulcanized construction ensures zero air leakage within rated working pressure.