You make decorative building elements – lightweight cornices, Roman columns, artificial rocks, or facade panels. Hand‑mixing glass fiber into concrete and troweling it onto molds takes forever. The fibers clump. The strength varies. The labor cost eats into your profit.
A grc spray machine solves all that. It mixes cement, sand, water, and short glass fibers together, then sprays the mixture through a hose onto any mold or wall. The fibers spread evenly. The material is dense and strong. You finish in hours instead of days.
YG offers a screw‑type grc spraying machine that runs on 380V, 3‑phase power. The work area reaches 4.5 meters horizontally. Productivity is 200‑400 square meters per hour. If you are interested, please feel free to contact us.
YG GRC Spray Machine – Key Technical Parameters
Here are the complete specifications from the YG document.
| Machine Name | Screw GRC Shotcrete Machine |
| Voltage | 380v,3phase |
| Frequency | 50hz |
| Power | 2.2-4.0kw step-less speed regulation motor |
| Rotating speed | 20-200r/min Speed regulation when the machine is running |
| Work area | 4.5M（Horizontal boom radius） |
| Delivery capacity | 300-1600kg/h |
| Capacity | 60L |
| Working pressure | 0.6-0.8mpa |
| Productivity | 200-400㎡/h |
| Machine size | 1400*1000*2200mm |
| Machine Weight | 220kg |
Motor Power Combinations
The list includes five standard solutions for the GRC spray machine and matching mixer.
| Item | GRC Spraying Machine | Mixer |
| Solution 1 | 2.2kw | 1.5kw |
| Solution 2 | 3.0kw | 1.5kw |
| Solution 3 | 3.0kw | 2.2kw |
| Solution 4 | 4.0kw | 2.2kw |
| Solution 5 | 4.0kw | 5.5kw |
Choose a higher power for thicker mixes or longer hoses.
What Is A GRC Spray Machine Used For?
- Exterior wall panels – Lightweight, high‑strength decorative cladding.
- Architectural moldings – Cornices, window surrounds, door frames.
- Roman columns – Round or fluted columns for buildings and gardens.
- Relief sculptures – Decorative wall art, logos, emblems.
- Artificial rocks – Landscape features, fake grottos, water features.
- Garden ornaments – Planters, benches, statues.
The material is GRC (Glass Fiber Reinforced Concrete), also called GFRC. It combines the compressive strength of concrete with the tensile strength of glass fibers. The result is thin, light, and strong.
How Does A GRC Spraying Machine Work?
Step 1 – Prepare the dry mix. Cement and sand are pre‑mixed (either manually or with a mixer).
Step 2 – Load the hopper. Pour the dry mix into the 60L hopper of the GRC spray machine. Add water and short glass fibers. The screw mechanism inside the machine mixes everything into a wet, fiber‑filled paste.
Step 3 – Pump and spray. The rotating screw (speed adjustable from 20 to 200 rpm) pushes the material through a hose to the spray gun. Compressed air (0.6‑0.8 MPa) atomizes the mix into a fine spray. The operator aims at the mold or the wall.
Step 4 – Finish. Because the fibers are evenly distributed, the sprayed layer has consistent strength. Multiple thin layers build up complex shapes without sagging.
The horizontal boom reaches 4.5 meters – you can spray large panels without moving the machine.
The Difference Between A GRC Spray Machine And A Mortar Sprayer
| Feature | GRC Spraying Machine | Mortar Sprayer |
| Material | Cement + sand + glass fibers | Cement + sand (no fibers) |
| Fiber handling | Special screw design prevents clumping | Cannot handle short fibers |
| Output | 300 1600 kg/h | Lower for fiber mixes |
| Application | Decorative panels, columns, thin shells | Plastering, rendering, wall coatings |
A standard mortar sprayer will clog when you add glass fibers. A dedicated grc spray machine has a specially designed screw and mixing chamber that keeps fibers evenly suspended.
Advantages Of Using GRC Equipment
- High efficiency – Several times faster than manual application. One machine can replace multiple hand workers.
- Uniform quality – Fibers are distributed evenly. The resulting GRC has consistent strength, 30% higher than the old manual methods
- Lower cost – Less material waste, shorter production time.
- Better molding – Can spray complex curved surfaces, reliefs, and irregular shapes that are difficult to cast.
- Automated mixing – The screw system mixes as it pumps. No separate mixing step (though a pre‑mixer is recommended for large jobs).
Upgrade Your GRC Production With YG
If you produce architectural GRC elements, a GRC spray machine is not a luxury – it is a productivity tool that pays for itself in months. You save 1‑2 workers per year, increase product strength by 30%, and finish jobs faster.
Contact YG with your typical production volume and workpiece size. They will recommend the right grc spraying machine configuration and provide a quote. Start spraying – not hand‑packing.
Frequently Asked Questions
Yes, but it is designed for fiber‑reinforced mixes. For plain mortar, a cheaper mortar sprayer would work. This machine’s strength is handling glass fibers.
Basic training on mixing ratios and gun handling. The machine is straightforward. Most operators learn in a day.
Flush with water until all material is out. Remove and clean the screw if needed. Do not let GRC harden inside – it is very hard to remove.
Higher power allows you to pump thicker mixes or longer hoses. For standard decorative work, 2.2 KW is enough. For high‑output production, choose 4.0 KW.