Blasting involves directing a high-pressure stream of abrasive media (i.e., steel grit or crushed glass) at a part, stripping the surface of old paint or rust.
Powder coating is applied electrostatically and then cured at 400 degrees, creating a hard, durable finish. When you need great quality, a fast turnaround, and reasonable costs, powder coating is the best option.
Liquid coating is more versatile than powder coating, but is more labor intensive and generally more expensive on common parts. When it comes to extremely large or heavy parts, or if durability is less of a concern, liquid coating is more efficient than powder coating.