Military Sandblasting & Surface Preparation Experts

40-70 grit refers to the size range of abrasive particles used during blasting. In general, lower grit numbers are coarser and create a more aggressive surface profile, while higher numbers are finer. A 40-70 blend can balance cleaning speed with profile control, making it useful when removing coatings, rust, or mill scale before a durable finish is applied.

Yes. Effective sandblasting requires knowledge of media selection, air pressure, nozzle technique, substrate behavior, profile depth, safety practices, and coating requirements. Poor blasting can warp thin parts, leave contamination behind, or create the wrong surface profile. Skilled technicians understand how to clean and prepare parts consistently without damaging the material or compromising downstream coating adhesion.

TriNu supports defense contractors and suppliers with surface preparation for equipment housings, frames, structural components, vehicle sub-assemblies, support equipment, OEM parts, and oversized fabrications. The process is well suited for steel and metal components that need rust removal, coating removal, or a controlled anchor profile before powder coating or another specified finish system.

Blasting removes contaminants that interfere with adhesion, including rust, old coatings, mill scale, oxidation, oils, and surface debris. It also creates an anchor profile, giving the new coating a textured surface to mechanically bond to. When the profile is matched to the coating specification, the finished part is more durable and less likely to peel, chip, or fail early.

Yes. TriNu has large-part capability supported by a 10' × 10' × 30' production oven for oversized fabrications that move from blasting into powder coating. This capacity is useful for long frames, structural assemblies, support equipment, enclosures, and other large defense-related components that many coating shops cannot accommodate efficiently.

TriNu offers pick-up and delivery across the Tampa Bay area for qualified projects, including oversized fabrications, palletized parts, and recurring production runs. Logistics support helps reduce handling damage, simplify scheduling, and keep your fabrication or manufacturing team focused on production while TriNu manages the surface preparation and finishing workflow.

Quality control starts with reviewing the project requirements, selecting appropriate media, and preparing the surface to match coating or downstream processing needs. TriNu emphasizes controlled processes, consistent surface preparation, and inspection before parts are released. When blasting is paired with powder coating, the workflow continues through application, curing, and final inspection.

Yes. Proper sandblasting or abrasive blasting is often an essential prep step before mil-spec capable powder coating. The blasting process removes corrosion and contaminants while creating the surface profile needed for adhesion. TriNu can coordinate preparation and finishing under one roof, helping defense suppliers maintain consistency from raw component to finished coated part.