Sandblasting is a surface preparation done to clean metal products before having them coated. The primary purpose for sandblasting is to clean and prepare the subsurface of the metal part so the coating will adhere to the part. Sand blasting is an integral part of our metal preparation process which also includes sanding and chemical treatment.
There are different levels of sandblast preparation:
White Metal Blast (SSPC-SP 5)
This is cleaning the surface so that when viewed without magnification, is free of all visible, oil, grease, dirt, dust, mill scale, rust, coating, oxides, corrosion products, and other foreign matter.
Commercial Blast Cleaning (SSPC-SP 6)
A commercial blast cleaned surface, when viewed without magnification, is free of all visible oil, grease, dust, dirt, mill scale, rust, coating, oxides, corrosion products, and other foreign matter, except for staining as noted in the standard. Staining is limited to no more than 33 percent of each square inch of surface area, and may consist of light shadows, slight streaks, or minor discolorations caused by stains of rust, stains of mill scale, or stains of previously applied coatings.
Brush off Blast Cleaning (SSPC-SP 7)
A brush-off-blast cleaned surface, when viewed without magnification, is free of all visible oil, grease, dirt, dust, loose mill scale, loose rust, and loose coating. Tightly adhered mill scale, rust, and coating may remain on the surface.
All parts needing sandblasting need to be free of wires, plastic, rubber, etc. as well as any other item that can be destroyed by the sanding process. Our sand is designed to meet the SSPC-SP needs and involves the process of blowing sand against the product with the use of high pressure air until the surfaces are cleaned.
We are located across the street from AZZ Galvanizing Services (816) 241-4300 and transport projects for customers to be galvanized to AZZ after we have sandblasted them in preparation for galvanization.
Our sandblasting area is 20’ H x 40’ W x 40’ L. to accommodate large metal pieces.