Precast Concrete Slab Making Machine Series
Precast Concrete Slab Molding Machine
A precast concrete slab molding machine is a mobile slipformer that travels along a long steel concrete floor bed. It takes a concrete mix and transforms it into a continuous, high-strength slab.
The Molding Process: Instead of using fixed molds for every piece, the machine is the mold. As it moves, it shapes the concrete, vibrates it to maximum density, and leaves a finished slab behind it.
Automation: Modern molding machines are almost entirely automated, requiring only a few operators to monitor concrete levels and machine travel.
This type of machine is a core component of a hollow core slab production line, enabling continuous, efficient, and high-precision slab forming with consistent quality.
It is widely applied in the production of solid slabs, hollow core slabs, and prestressed hollow core slabs for floor, roof, and structural systems in modern construction.
As a professional supplier and exporter of Precast Concrete Slab Molding 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 lightweight yet high-strength concrete slabs
Suitable for prestressed hollow core slab production
Reduces material usage through hollow core design
Ensures consistent dimensions and surface quality
Ideal for industrialized precast concrete construction.
Material Efficiency: By using “hollow cores,” you save a massive amount of concrete and steel compared to traditional solid slabs.
Speed: A single production line can produce hundreds of square meters of flooring in a single shift.
Quality: Because it is made in a factory, the slabs have a perfectly smooth finish that is ready for painting, eliminating the need for expensive on-site plastering. 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 |
A long, steel casting bed is thoroughly cleaned and prepared. High-tensile steel strands are laid out longitudinally and tensioned to the required force using hydraulic prestressing equipment. This prestressing process is essential for achieving long-span and high-load performance.
The steel strands are pre-tensioned and anchored at both ends of the casting bed, with tension calculated based on slab thickness, span, and load requirements. During extrusion, concrete is molded around the strands, fully embedding them. Once cured and the strands are released, compressive stress transfers to the slab, significantly incre
A low-slump, high-strength concrete mix is continuously fed into the hollow core slab machine. Inside the machine, screw augers or mandrels compact and shape the concrete under high pressure, ensuring dense, uniform slab formation.
After extrusion, the slabs remain on the casting bed to cure, using steam or natural methods as needed to accelerate strength development. Once the concrete reaches the required strength, the continuous slab is cut to length with diamond saws and is ready for lifting, storage, or direct delivery to the construction site.
The Prestressed hollow core slab machine can produce a variety of slab and concrete floor slabs, including:
Hollow core floor slabs
Prestressed roof slabs
Precast concrete panels for residential, commercial, and industrial buildings
Modular and prefabricated construction systems.
Within a complete hollow core slab production line, the precast concrete slab molding machine works together with:
Concrete batching and mixing systems
Prestressing equipment
Cutting machines
Curing and stacking systems
This integrated setup allows for continuous, large-scale production of uniform hollow core slabs with high efficiency and low labor requirements.
The machine does not work in isolation. To function, it requires a complete Hollow Core Slab Production Line, which typically includes:
| Stage | Equipment Involved | Function |
|---|---|---|
| Preparation | Tensioning Machine | Stretches the steel strands to the required high tension. |
| Feeding | Concrete Batching Plant | Mixes the specific “dry-cast” concrete needed for the extruder. |
| Molding | Slab Molding Machine | The primary unit that extrudes and shapes the slab. |
| Curing | Heating/Covering System | Often uses steam or thermal covers to speed up concrete hardening. |
| Finishing | Bridge Saw / Cutting Machine | A diamond-blade saw that cuts the 100-meter slab into precise customer lengths. |
Material Efficiency: By using “hollow cores,” you save a massive amount of concrete and steel compared to traditional solid slabs.
Speed: A single production line can produce hundreds of square meters of flooring in a single shift.
Quality: Because it is made in a factory, the slabs have a perfectly smooth finish that is ready for painting, eliminating the need for expensive on-site plastering.
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.
