Spinner blast and hollow blast internal pipe blasters mini tublast can blast pipe with internal diameters 3/4 to 4 tublast can blast pipes with internal diameters 2 to 12 rotoblast can blast pipes with internal diameters with 8 to 36 internal pipe coaterthe pipecoater are intended to coat the inside of pipes and tubes quickly and evenly without the need to rotate the item. In operation a rotating head, Powered by an airmotor throws paint by centrifugal force at an evenly metered flow against the surface. Pipecoater is manually pulled through the pipe at a pre, Thickness as well as category of coating. Determined speed based on paint film