B21, China Town Mall, Midrand
concrete Mortar spray,spraying plastering machine
- Section : Machinery
- Category : Construction Machinery
- SKU : 1600136131815
- Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 03 Feb, 2026, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
- Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
- Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
- Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.
1. What materials can the concrete mortar spray / spraying plastering machine handle?
It is suitable for thermal insulation mortar, perlite, real stone paint, putty, cement mortar, fireproof materials, various coatings, and other spraying, grouting and conveying applications.
2. What is the model and key technical specifications of the machine?
Model QJ--311. Air compressor power: 3000 W; pump power: 3/4 kW (as listed); motor power: 4000 W; voltage: 220/380 V; working pressure: 5–9 MPa; vertical spray distance: 20 m; horizontal distance: 30 m; dimensions: 1630×570×1000 mm; weight: 135 kg.
3. What spray distances can I expect?
Maximum vertical spray distance is up to 20 meters and maximum horizontal distance up to 30 meters (actual distance depends on material properties and operating pressure).
4. What power and electrical requirements does the machine need?
The machine uses a motor rated at 4000 W and supports voltages of 220 V or 380 V. The supplied air compressor power specification is 3000 W.
5. What construction efficiency and quality benefits does this machine provide?
It increases construction efficiency, adopts foreign technology for improved build quality and service life, reduces manual transport and worker labor intensity, and improves consistency of spraying and plastering quality.
6. Is the machine portable for on-site use?
Yes. The machine is described as compact and easy to carry on site. Its dimensions are 1630×570×1000 mm and it weighs 135 kg, making it manageable for typical construction sites.
7. What accessories are included as standard?
Standard accessories include batching pipe, air pipe, spray gun, stator, spray head and an air compressor.
8. Can this machine be used together with a mortar mixer?
Yes. The machine can be matched with a mortar mixer to prepare and feed materials for spraying.
9. How should I clean and maintain the machine?
Flush all material passages, hoses and the spray gun with clean water or a recommended cleaning fluid after each use. Regularly inspect and replace wear parts (stator, spray head, seals), check hoses for damage, and follow the air compressor manufacturer’s maintenance schedule.
10. What safety precautions should operators follow?
Operators should wear appropriate PPE (eye/face protection, gloves, respirator if needed), ensure hoses and connections are secure, relieve pressure before maintenance, follow electrical safety for the rated voltage, and only allow trained personnel to operate the machine.
11. How do I choose the correct nozzle and pressure for different materials?
Select nozzle size and stator type according to material viscosity and particle size. Start at a lower pressure within the 5–9 MPa working range and increase as needed for consistent flow and spray pattern. Consult the material supplier or the machine manual for recommended settings.
12. Are spare parts and consumables readily available and costly?
The product description notes that accessory costs are low. Wear parts such as stators, spray heads, seals and hoses are commonly stocked; contact your supplier for availability and pricing.
13. Can this machine handle thick or aggregate-containing mortars?
Yes, it is designed for a range of mortars including cement mortar and textured materials like real stone paint, but pumpability depends on particle size and consistency. Use properly mixed, appropriately graded materials and consult the supplier for limits on aggregate size.
14. What is the recommended operating pressure range?
The recommended working pressure range is 5–9 MPa. Adjust within that range based on material characteristics and desired spray performance.
15. What warranty and after-sales service are provided?
Warranty and after-sales service terms are not listed in the product description. Please contact the supplier or manufacturer for specific warranty periods, service plans and local support options.
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