Precast Concrete Slab Making Machine Series
Precast Concrete Floor Slab Machine
A Precast Concrete Slab Making Machine is a specialized industrial machine designed to manufacture hollow core concrete slabs in a controlled factory environment. These machines produce high-strength, lightweight slabs with hollow cores, which are commonly used in flooring, roofing, and bridge decks in commercial, residential, and industrial construction.
Unlike traditional cast-in-place concrete floors, hollow core slabs are precast off-site, allowing faster installation, improved quality control, and reduced labor costs. The hollow cores reduce weight without compromising structural integrity, making them ideal for long spans and modular construction.
As a professional supplier and exporter of Precast Concrete Floor Slab Machine in China, Kelai Machinery is committed to providing customers with high-quality, reliable, and cost-effective prefabricated concrete machinery.
For inquiries about precast concrete machinery suitable for your products, please contact us at [email protected]. We’re happy to assist you.
Produces uniform, high-strength hollow core slabs
Supports long spans and reduced weight
Can be automatic, semi-automatic, or fully continuous
Customizable slab thickness, width, and core diameter
Ideal for mass production of flooring and roofing panels.
Produces uniform, high-strength hollow core slabs
Supports long spans and reduced weight
Can be automatic, semi-automatic, or fully continuous
Customizable slab thickness, width, and core diameter
Ideal for mass production of flooring and roofing panels etc.
| Machine Model | Model (Thickness × Width mm) | Molding Speed (m/min) | Power (kW) | Dimension (L×W×H mm) | Weight (t) |
|---|---|---|---|---|---|
| JBT-60 | 100 × 600× L | 1.2-1.4 | 4+3 | 2500×950×850 | 0.9 |
| JBT-120 | 120 ×600×L | 1.2-1.5 | 5.5+3 | 2500×950×850 | 1.05 |
| JBT-200 | 200 ×1200×L | 1.0-1.2 | 11+7.5 | 2500×1000×890 | 3.1 |
| JBT-300 | 300 × 1200×L | 1.0-1.2 | 18.5+15 | 2700×1100×900 | 5.1 |
| JBT-350 | 350 × 1200×L | 0.8-1.0 | 18.5+15 | 2750×1100×1000 | 5.2 |
The Precast Concrete Slab Making Machine typically use Extrusion or Slipforming technology on a long steel “casting bed” (often over 100 meters long).
Before the machine starts, high-strength steel cables (strands) are stretched tightly across the concrete bed
The machine straddles these cables and moves forward. As it moves, it extrudes a dry concrete mix around internal “mandrels” or “tubes” that create the hollow voids.
High-frequency vibrators and internal pressure (from screws or pistons) pack the concrete so tightly that the slab can support its own weight and maintain the hollow shape immediately after the machine passes.
Once the concrete hardens, a giant diamond-blade saw cuts the continuous slab into the exact lengths required for the building
The Precast Concrete Floor Slab Machine can produce a variety of slab and concrete floor slabs, including:
High-Rise Apartments: For rapid floor installation.
Industrial Warehouses: To create large open spaces without columns.
Schools & Hospitals: Where fire resistance and sound insulation are critical.
Parking Garages: Because the slabs can handle the heavy weight of vehicles.
A Precast Concrete Slab Making Machine is a heavy-duty industrial extruder or slipformer used to create prestressed, load-bearing concrete slabs with longitudinal circular voids (cores).
There are two primary ways these machines create the hollow voids while moving:
The Extrusion Method: The machine uses rotating screws (augers) to push dry concrete into the mold. Behind these screws are long metal tubes called mandrels. The concrete is packed tightly around these tubes, and as the machine moves forward, the tubes slide out, leaving a perfect hollow core behind.
The Slipforming Method: Instead of screws, this method uses a combination of vibration and a moving hopper. It is often used for more complex shapes or slabs with non-circular voids.
Why Use Hollow Core Slabs?
Weight: They are 40-50% lighter than solid slabs, reducing the load on a building’s foundation.
Prestressing: Because they are cast over tensioned steel cables, they have a natural “camber” (slight upward curve) that allows them to support massive weights without sagging.
Speed: A single machine can produce over 150 square meters of flooring in a single 8-hour shift.
We only choose well-reputed shipping lines to ensure safety and time. From our factory to the destination port, or even to your warehouse, “Full Tracking Service” is always with you！
Our Frequently Asked Questions section provides clear and practical information about our precast concrete machinery, including hollow core slab machines, wall panel extrusion equipment, and complete precast production lines. Here you can learn more about machine performance, production capacity, installation support, customization options, delivery time, and after-sales service.
Professional manufacturer of precast machinery
Reliable quality control system
Technical support & training available
Competitive factory price
Customized solutions for different projects
A precast concrete hollow core slab machine is used to manufacture lightweight, high-strength hollow core slabs for floor and roof systems. These slabs are widely applied in residential, commercial, and industrial buildings to achieve long spans, reduced structural weight, and faster construction.
Hollow core slabs produced by this machine offer 40–50% weight reduction, excellent load-bearing capacity, and efficient material usage. The hollow cores also serve as built-in channels for electrical, plumbing, and HVAC installations, improving construction efficiency.
A precast concrete hollow core slab machine typically uses dry or semi-dry concrete mixes with controlled moisture content. This mix ensures proper extrusion, high density, and consistent hollow core formation during continuous production.
Yes. The precast concrete hollow core slab machine can be customized in terms of slab thickness, width, hollow core diameter, and production capacity to meet different project requirements and market standards.
Production capacity depends on slab dimensions, machine configuration, and automation level. In general, a precast concrete hollow core slab machine is capable of continuous, high-output production, making it suitable for medium to large-scale precast concrete factories.
If you are looking for a reliable hollow core slab molding machine for your precast concrete production line, feel free to contact us for more details and quotations. Our technical team will recommend the most suitable model according to your production capacity and project requirements.
