... control (three capillary evaporator)Key processTube bending, Al plate punching, Surface cleaning, Bounding, Weld the suction, Tube assembly ... , Drying, Surface cleaning, Coating, Inspection, PackagePerformance1) Al plate or (and) pipe with powder painting, or with lacquer ... mg/m2 Specification of coatingCoating thicknessThickness of flat plate or tube powder painting: 30 100umHardness of coating ...