Blasting Grades
Compare heavy blasting and standard blasting grades for surface preparation.
Blasting grade selection starts with the surface preparation job and the profile required by the next operation. Describe the substrate, material to remove and planned coating before comparing the available choices. The catalogue pairs 20/40 mesh with heavy blasting and a deep profile, while 30/60 mesh is the standard blasting option. Match the grade to the stated surface task: a deeper profile belongs to the heavy option, while routine preparation belongs to the standard option. Treat the bands as a way to identify the grades, then compare the neighbouring choice when the removal duty or requested profile changes. Keep the surface condition and coating plan attached to the choice. A representative trial can settle the choice on the actual surface. Include the job description and the required quantity when asking for a grade data sheet.
Other grades are available on request - contact our sales team
20/40 mesh850-425 µm
Choose 20/40 mesh for heavy blasting when the preparation brief calls for a deep profile. Begin with the substrate condition and the planned coating, then decide whether that profile is actually part of the next operation. If the surface instead needs a standard blasting approach, step finer to 30/60 mesh and compare both choices on a representative area. Note the access and surface state alongside the result. Keep the observation tied to the same preparation brief so a grade change is not confused with a change in the job.
Buyer note: State the required profile and the coating plan beside the requested grade for this surface preparation job.
30/60 mesh600-250 µm
Choose 30/60 mesh for standard blasting when the preparation brief does not call for the deeper profile associated with 20/40 mesh. Describe the substrate and removal task, then step coarser to 20/40 mesh when the duty becomes heavy or the following coating needs that profile. If the brief changes from routine preparation to a deep profile, reopen the comparison rather than treating the first choice as fixed. A representative comparison should use the actual surface and the intended preparation method; record the selected grade with the job description for repeat enquiries.
Buyer note: Identify the grade used on the last comparable surface and describe what has changed.
Frequently Asked Questions
- Which garnet mesh sizes are used for blasting?
- The listed blasting choices are 20/40 mesh for heavy blasting with a deep profile and 30/60 mesh for standard blasting. Compare the two against the surface preparation task rather than choosing by the mesh name alone.
- What should guide blasting grade selection?
- Start with the substrate, the material to remove, the required profile and the planned coating. A representative trial on the actual surface can help settle the choice when the preparation duty changes.
- When is 20/40 mesh the blasting choice?
- Choose 20/40 mesh when the preparation brief calls for heavy blasting and a deep profile. If the surface needs standard preparation instead, compare it with the finer 30/60 mesh option.
- When is 30/60 mesh the blasting choice?
- Choose 30/60 mesh for standard blasting when the brief does not require the deeper profile associated with 20/40 mesh. Recompare the grades if the removal duty becomes heavy or the required profile changes.
- What information should accompany a blasting grade data-sheet request?
- Include the surface-preparation job description and the required quantity. Also identify the substrate, removal task, required profile and planned coating so the grade request stays tied to the work.