30/60 Garnet Blasting Abrasive

30/60 garnet is a medium-coarse blasting abrasive. It is used to remove rust and old coatings, and to prepare steel before painting or anti-corrosion coating.

This grade covers particles between 30 and 60 mesh. Compared with 80 mesh, it cleans faster and leaves a more visible surface profile. Compared with 20/40, it is less aggressive and easier to control.

Typical Specification of 30/60 Garnet

Actual values based on supplier's TDS/COA.

Item	Typical Specification
Product Name	Garnet blasting abrasive
Common Grade	30/60 mesh
Mohs Hardness	7.5-8.0
Specific Gravity	4.0-4.2 g/cm³
Bulk Density	2.1-2.4 g/cm³
Free Silica	Typically <1% (SEPPE SGA <0.1%)
Chloride Content	Typically ≤25 ppm (SEPPE SGA 0.0003%)
Typical Surface Profile	Approx. 50-75 microns
Main Applications	Steel blasting, shipyards, storage tanks, pipelines, bridges

Surface Profile and Mesh Selection

30/60 garnet creates a surface profile of about 50-75 microns. This range works well for many industrial coatings and heavy-duty anti-corrosion systems.

Actual results depend on blasting pressure, nozzle distance, nozzle movement, and steel condition. Test on a small area before full-scale blasting.

Common Applications

30/60 garnet is common for steel structures, shipyards, storage tanks, pipelines, bridges, offshore structures, and heavy-duty coating preparation. It fits projects that need faster cleaning and a medium-to-high surface profile.

Garnet Grade	Typical Feature	Common Application
20/40	Coarser particles, stronger impact, higher profile	Heavy rust, thick coating removal, heavy steel treatment
30/60	Balanced cleaning efficiency and surface profile	Industrial steel blasting and coating preparation
80 mesh	Finer particles, smoother surface	Light blasting, finer surface treatment, waterjet cutting
120 mesh	Very fine, for finer surface requirements	Fine finishing, special surface effects, some waterjet applications

What to Check When Buying 30/60 Garnet

Price per ton is only one factor. Particle size, dust level, chloride content, free silica, moisture, packaging, batch consistency, and documents (TDS, MSDS, COA) all matter.

A cheaper abrasive can increase total cost. It may create dust, block equipment, contaminate the surface, or cause coating failure and rework.

SEPPE SGA 30/60 River Garnet

SEPPE Technologies supplies SGA 30/60 river garnet for industrial blasting projects. SGA is a natural river garnet screened and quality controlled for steel surface cleaning, old coating removal, and coating preparation.

SEPPE SGA focuses on controlled particle size, low dust, low chloride (0.0003%), low free silica (<0.1%), and stable moisture (0.18%). These details affect abrasive flow, blasting speed, surface cleanliness, coating adhesion, and rework risk.

For export customers, SEPPE provides suitable packaging, stable batch supply, TDS, MSDS, COA, and mesh size recommendations based on your material, coating system, and target surface profile.

Contact info@seppe.cn with your application and target surface profile.