Blast Abrasives

Blast abrasives engineered to perform

GMA Garnet™ sandblasting media cuts and cleans faster to optimize performance for any surface preparation project.

Garnet abrasive
01 HARDNESS
02 TOUGHNESS
03 DENSITY
04 ANGULARITY

The GMA advantage

GMA Garnet™ is a strong natural mineral that outperforms other abrasives due to its inherent hardness, toughness, density, and angularity. These qualities, when combined with the recommended equipment and air pressure, provide teams with unmatched performance, such as:

  • Fast removal of tough coatings
  • A deep anchor pattern
  • No surface embedment
  • A consistent surface profile

About

What is an engineered blend?

GMA’s range of garnet blast abrasives are exclusively engineered blends, a mix of coarse and fine garnet grains, achieving the optimal balance between cutting and cleaning power.

Abrasive media particles

Engineered blends, explained

Typical sandblasting media is generally one-dimensional, containing either coarse or fine grains. GMA's range of Engineered Blend garnet abrasives are a unique mix of coarse and fine garnet grains, achieving the optimal balance between cutting power and cleaning ability.

Grain size matters

Coarse grains can cut through thick coatings and create a deep surface profile, but leave behind significant surface embedment. Used alone they cannot thoroughly clean small valleys or pits, resulting in slow cleaning rates, high abrasive consumption, and a higher risk of corrosion and coating failure.

Abrasive media particles

The cause for change

Fine grains produce a cleaner surface and are more efficient at removing thin coatings like mill scale than coarse grains. However, they are ineffective for thick coating removal and cannot produce the deep surface profile depth required for many industrial coatings.

In choosing traditional abrasives, coatings can either be removed, or the surface can be cleaned – not both at the same time.

Efficient abrasive media particles

A more efficient abrasive

GMA Garne™ Engineered Blends deliver optimised blasting performance in specific applications. Coarse grains cut through coatings fast and create the required profile depth, while fine grains clean the anchor profile and improve blasting efficiency.

GMA Garnet™ delivers fast and effective coating and rust removal at the lowest possible consumption rate, leaving the cleanest surface ready for inspection and coating application.

Benefits

Why is GMA Garnet™ the preferred sandblasting media?

Achieve safe, effective blasting with minimized consumption and unmatched coating adhesion.

surface quality

Surface quality

Our garnet creates the required surface profile with minimal embedment or contamination, and produces higher peak density.

High productivity

High productivity

GMA reduces your costs with significantly higher blast production rates, giving you shorter project time lines.

Reduced consumption

Reduced consumption

Lower your abrasive consumption by 30–50%, giving you savings in abrasive purchase costs, as well as transport, storage and disposal costs.

Worker safety

Worker safety

Garnet is a chemically inert mineral, with little to no heavy metals creating worker health and safety risks or environmental contamination.

Low dust blasting

Low dust blasting

Our garnet fractures less on impact, drastically improving operator visibility and reducing site contamination.

Sustainable resource

Sustainable resource

Our garnet recovery programs offer a cost-effective and environmentally responsible solution for the disposal of used garnet.

Products

GMA PremiumBlast

GMA PremiumBlast™

GMA PremiumBlast™ is a versatile, maintenance-grade garnet abrasive engineered for efficient and economical surface preparation. Well suited to the removal of medium to heavy rust and medium to thick industrial coatings, it provides a dependable solution for a wide range of blasting applications.

Produced from durable alluvial garnet, GMA PremiumBlast™ combines effective coating removal with high productivity and a consistently clean, uniform surface finish. Its proven performance and versatility have established it as a widely used garnet abrasive for general industrial and maintenance blasting applications worldwide.

Industry Applications:

  • Oil and Gas:
    - Terminals
    - Offshore production
    - Petroleum refining
  • Energy generation and transmission
  • Construction and infrastructure
  • Pipelines
  • Shipyards maintenance and repair
  • Water and wastewater treatment
  • Metal fabrication
30 / 60
Mesh Grade*
55 - 85 µm
Surface profile*
18 - 32 m²/hr
Blasting rate*
12 - 18 kg/m²
Consumption rate*

For more information, please download the technical datasheet.

GMA PremiumBlast Datasheet
GMA ToughBlast

GMA ToughBlast™

GMA ToughBlast™ is an engineered blend garnet abrasive designed to power through heavy industrial coatings. Achieve high blast rates and your required profile on heavily rusted or pitted surfaces, tank lining maintenance, 2 or 3 coat systems, maintenance on pipes, pressure vessels, and offshore platforms.

Keep your projects on schedule and reduce your costs with the abrasive that cuts and cleans faster than traditional blast abrasives.

Industry Applications:

  • Oil & gas (onshore and offshore)
  • Tank exteriors and liners
  • Water and wastewater treatment
  • Railcars
  • Energy generation
75 - 105 µm
Surface profile*
20 - 35 m²/hr
Blasting rate*
11 - 17 kg/m²
Consumption rate*

For more information, please download the technical datasheet.

GMA ToughBlast
GMA SpeedBlast

GMA SpeedBlast™

GMA SpeedBlast™ is our fast cleaning, general purpose abrasive for a wide variety of less challenging industrial blasting requirements. It offers exceptionally fast blasting performance for removal of light to medium coatings and/or rust.

It outperforms other abrasives due to its hardness, low consumption rates and durability that improves productivity and ensures a superior surface finish.

Industry Applications:

  • Oil & gas (onshore and offshore)
  • Tank exteriors and liners
  • Water and wastewater treatment
  • Energy generation
  • Shipyard maintenance and repair
30 / 70
Mesh Grade*
45 - 75 µm
Surface profile*
22 - 35 m²/hr
Blasting rate*
8.5 - 14.5 kg/m²
Consumption rate*

For more information, please download the technical datasheet.

GMA SpeedBlast
GMA NewSteel

GMA NewSteel™

Maximize fabrication output and keep costs to a minimum with the quickest mill scale and light rust removal abrasive on the market.

Faster than other garnets or staroulite, GMA NewSteel provides superior surface cleanliness, a uniform profile, and greater coating adhesion, extending your coating life.

Industry Applications:

  • Oil & gas (onshore and offshore)
  • Metal fabrication
  • Pipelines
  • Construction & infrastructure
40 / 80
Mesh Grade*
40 - 65 µm
Surface profile*
23 - 39 m²/hr
Blasting rate*
7.5 - 13 kg/m²
Consumption rate*

For more information, please download the technical datasheet.

GMA NewSteel Datasheet
GMA PrecisionBlast

GMA PrecisionBlast™

Available in 120 and 200 mesh, GMA PrecisionBlast is a precise and efficient micronized abrasive, ideal for delicate, vulnerable or sensitive surfaces including stone, brick, timber, concrete, and ferrous and non-ferrous metals.

Used on some of the worlds oldest most famous landmarks and monuments including the Trevi Fountain and the Eiffel Tower.

Industry Applications:

  • Metal fabrication
  • Stone & brick restoration
  • Plastics
  • Soft metals
  • Concrete maintenance
120 / 200
Mesh Gradee*
25 - 50 µm
Surface profile*
Up to 31 m²/hr
Blasting rate*
As low as 6 kg/m²
Consumption rate*

For more information, please download the technical datasheet.

GMA PrecisionBlast Datasheet
GMA sOFTBlast

GMA SoftBlast™

Our finest garnet abrasive, ideal for extremely delicate restoration or sensitive surfaces. Able to remove single layers of paint at a time, while not affecting delicate surfaces.

GMA SoftBlast excels in restoration and removal of graffiti, pollution or adhesives on stone, brick, wood, glass, soft metals, or sensitive equipment such as gauges & valves. Ideal for stone or wood heritage buildings, automotive or antique restoration. GMA SoftBlast is available in 350 mesh.

Industry Applications:

  • Stone & brick restoration
  • Soft metals
  • Concrete maintenance
  • Fibreglass & composites
12 - 25 µm
Surface profile*
Up to 28 m²/hr
Blasting rate*
As low as 4 kg/m²
Consumption rate*

Abrasive Media

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