OEM Concrete Sandblasting Machine Pricelist & Company

Our direct-pressure concrete sandblasters and captive centrifugal shot blasters are engineered to achieve profiles from CSP 2 (light abrasive blast profile, 50–75 microns) up to CSP 8–9 (heavy aggregate exposure, 6–10 mm depth). By adjusting blast pressure (from 40 to 125 PSI), nozzle traverse speed, blast angle, and media mesh sizing (e.g., 30/60 garnet vs. coarse S330 steel shot), operators can precisely match the structural overlay requirements mandated by ICRI Guideline No. 310.2R.

Captive vacuum systems seal the blast zone with a durable poly-urethane brush head connected to a high-vacuum extraction turbine. As the abrasive impacts the concrete, the instantaneous suction pulls 100% of pulverized dust, fractured concrete micro-fines, and spent media through heavy-duty antistatic vacuum hoses directly into a multi-stage cyclonic separator. Cleaned air passes through HEPA H14 certified filters before exhausting back into the room, maintaining airborne respirable silica concentrations far below the OSHA action level of 25 µg/m³.

Horizontal shot blasting relies on electric high-speed centrifugal throw wheels (turbines) propelling round steel shot against flat horizontal slabs. The metallic media bounces back into a recovery chamber, separating dust by gravity and magnetic drums, recycling the steel shot hundreds of times. Sandblasting (air pressure blasting) utilizes high-velocity compressed air to propel angular non-metallic media (garnet, aluminium oxide, crushed glass). Air sandblasting is essential for three-dimensional geometry, vertical concrete columns, bridge parapets, corners, irregular joints, and heavily pitted surfaces where wheel-blast machinery physically cannot navigate.

For open or semi-captive air blasting on bridge decks, high-purity almandine garnet (30/60 mesh or 20/40 mesh) is the industry standard due to its rapid cutting speed, low dust generation (<1% free crystalline silica), and ability to etch concrete without leaving embedded ferrous particles that could cause rust staining under transparent or thin coatings. For captive wheel-blast rigs, hardened spherical carbon steel shot (S280 to S390) combined with 15% angular steel grit (GL40) provides optimal tensile bond strength (over 1.75 MPa / 250 PSI in direct pull-off tensile testing).

Yes. KOSHIN specializes in turnkey OEM engineering. We design and assemble complete tandem-axle trailer rigs featuring integrated Tier 4 Final / Stage V Cummins or Perkins diesel rotary screw compressors (375 to 825 CFM), integrated blast pots (ASME / CE), heavy-duty air aftercoolers with moisture water separators, hose reels, and 12V pneumatic remote dead-man controls. These units arrive at your regional port fully plumbed, DOT/EU homologation approved, and ready for immediate deployment.

Wear intervals depend on the media abrasiveness. For Venturi blast nozzles, standard Tungsten Carbide liners last approximately 300 hours with garnet; upgrading to Boron Carbide (B4C) or Silicon Nitride (Si3N4) liners extends operational lifespan to 800–1,200 hours. Abrasive metering valve sleeves and urethane pinch segments require inspection every 400 hours. Dust collector filter cartridges utilizing PTFE nano-web coatings operate effectively for 1,500 to 2,000 hours with automated reverse pulse-jet cleaning cycles.

All KOSHIN systems are protected by an international 12-month bumper-to-bumper warranty (pressure vessel covered for 36 months). Commissioning is supported worldwide either through our Singapore-dispatched field service engineers or via secure remote telemetry video SAT sign-offs. We maintain critical spare parts hubs in Singapore and our China factory, with standard replacement kits (nozzles, seals, valves, cartridges) dispatched via DHL/FedEx International Priority within 24 hours.