Sandblasting
Compressed air is the core power source for sandblasting. It drives abrasive particles to impact the workpiece surface at high speed through high-pressure airflow, achieving the purpose of rust removal, paint removal, descaling, surface roughening, or cleaning.
Core Requirements for Air Compressors
in the Sandblasting Industry
Sandblasting (also known as abrasive blasting or media blasting) is a process that uses compressed air as power to propel abrasive media at high speed onto the surface of a workpiece for cleaning, rust removal, coating removal, or surface roughening. This process is widely used in shipbuilding, bridge maintenance, petrochemicals, steel structure processing, railways, pipeline engineering, and marine engineering.
Compressed air is the “driving force” of sandblasting operations, and its quality and stability directly affect sandblasting efficiency, surface treatment quality, and production costs. Core requirements for air compressors in the sandblasting industry:
- Stable Pressure: Common sandblasting applications typically operate within the range of 90–125 psig, with the specific pressure determined based on the sandblasting equipment and nozzle requirements.
- Sufficient Airflow: The airflow must cover nozzle air consumption and piping losses. Larger nozzles and those experiencing more wear require higher airflow.
- Dry, Clean Air: Moisture can cause blockages and downtime, while oil can contaminate workpiece surfaces; therefore, a post-treatment system is recommended.
- Continuous Operation Capability: Sandblasting is commonly used in high-intensity industrial environments, requiring the air compressor to have a stable air supply capability for extended periods.
What Factors Need to be Considered
When Selecting a Compressor for Sandblasting?
1. Operating Pressure
Industrial sandblasting typically operates within a pressure range of 90-125 PSI (approximately 6.2-8.6 bar), with the optimal operating point for most applications around 100 PSI (approximately 6.9 bar).
Pressure determines the impact force of the compressed air jet. Higher pressure results in greater kinetic energy and higher efficiency in rust removal or roughening, but excessive pressure accelerates nozzle wear, increases operator fatigue, and causes excessive damage to the workpiece surface. It is important to note that the actual operating pressure at the nozzle is more critical than the compressor outlet pressure—compressed air experiences pressure losses as it flows through pipes, valves, and hoses, therefore the compressor’s set pressure needs to allow for sufficient pressure drop margin.
2. Discharge/Free Air Delivery (FAD)
In sandblasting applications, a stable, high-flow-rate air supply is more important than maximum pressure. Sandblasting is a process that continuously consumes a large amount of compressed air; the compressor’s discharge capacity (typically measured in CFM or m³/min) must be matched to the air consumption of the sandblasting nozzle.
Nozzle size is the key variable determining air consumption; the nozzle orifice diameter is directly proportional to the square of the air consumption. Below is a reference for air consumption corresponding to common nozzle sizes:
| Nozzle size (mm) | Minimum air consumption (m³/min) | Typical pressure (bar) | Typical application scenarios |
| 3 mm | 0.3 – 0.8 | 5.5 – 7 | Lightweight sandblasting, spot cleaning, small parts |
| 5 mm | 0.7 – 1.8 | 6 – 7 | Small to medium-sized surfaces, general maintenance |
| 6 mm | 1.3 – 3.1 | 6 – 8 | Medium-sized operation, steel structure preparation |
| 8 mm | 2.2 – 5.3 | 7 – 8.5 | Heavy-duty sandblasting, shipyards, foundries |
| 10 mm | 3.0 – 7.5 | 7 – 9 | Industrial-grade sandblasting, pipeline engineering |
| 11 mm | 4.1 – 10.0 | 7 – 9.5 | Continuous high-output sandblasting, mining equipment |
| 13 mm | 5.5 – 13.0 | 7 – 10 | Maximum output sandblasting, large storage tanks, ship hulls |
3. Compressed Air Quality
Air quality directly affects sandblasting results and equipment lifespan:
Moisture Removal (Drying): Moisture in compressed air can cause abrasive particles to clump, clogging nozzles and pipes, leading to frequent downtime. In cold environments, condensation can also freeze, causing pipes to freeze. Therefore, a dryer (refrigerated or adsorption type) must be installed to effectively remove moisture.
Oil and Dust Removal: Oily compressed air can contaminate the sandblasted surface, affecting the adhesion of subsequent coatings. High-efficiency precision filters (especially activated carbon filters) can effectively remove oil and dust. For operations where operators wear breathing apparatus, certified clean air meeting breathing standards must be provided.
Inquire Now to Get Your Customized Compressed Air Solution for Sandblasting
Typical Applications in the Sandblasting Industry
Shipbuilding and Maintenance: Hull derusting, removal of old coatings, and dry-dock maintenance (equipment requires corrosion resistance due to high-salinity coastal environments)
Bridges and Steel Structures: Surface derusting and pre-coating preparation for bridge girders, towers, and large steel components
Oil and Gas: Derusting of internal and external pipe walls, storage tank cleaning, and offshore platform maintenance
Railways and Rail Transit: Rolling stock refurbishment and paint removal from components
Municipal and Construction: Concrete bridge repair, building facade cleaning, and graffiti removal (often utilizing wet or dust-free sandblasting)
Manufacturing: Sand removal from castings, surface treatment of parts and components, and equipment refurbishment
Why Sollant
Why Choose Sollant Air Compressors?
Agricultural environments put equipment to the ultimate test. Sollant air compressors are designed with these specific challenges in mind:
Reliable Continuous Output
A robust screw airend with a large-diameter rotor design keeps pressure stable through long, uninterrupted blasting shifts, with minimal wear parts to maintain.
Field-Ready Portability
Diesel towable and containerized models bring full compressor capacity to bridges, pipelines, hulls and yards with no grid power on site.
Complete Air Treatment Line
Coalescing filters, refrigerated and desiccant dryers, and buffer tanks are sold alongside the compressor so the whole air path — not just the air source — stays clean and dry.
Engineered for Harsh Sites
Sealed enclosures and corrosion-resistant builds are designed to keep running through dust, grit, salt air and temperature extremes.
Responsive Global Support
7×24 engineer support and a 30–45 day standard lead time keep a fleet upgrade or replacement from turning into a project delay.
What the Customer Says
“Sollant’s variable-frequency air compressors operate stably with low noise levels; their energy consumption has dropped by nearly 30% compared to before, significantly reducing our production costs.”
James Wilson, Production Manager
“Sollant’s equipment demonstrates exceptional stability; having operated continuously at full load for 24 hours without a single abnormal shutdown, it serves as our most trusted source of power support.”
Miller, Equipment Supervisor
“The service team is professional and highly responsive. The equipment has been in operation for over two years, demonstrating stable overall performance, a low failure rate, and low noise levels; they are a trustworthy partner.”
Eric Wright, Technical Director
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