The ,flowcomat' system offers innovative technology for impregnating, prime coating, interim coating and pickling based on flow-coating. The parts run through this flow-coat system, which may also be equipped by e.g. a piggable paint supply for a quick and low-loss change of paint. The ,flowcomat-A' system recently developed also makes it possible to change paint fully automatically. The system ,flowcomat-H' provides that all workpieces are flow-coated while in horizontal position.