AF3 series - boiler tube expanders
Configuration: three Parallel rollers with three flaring rollers
Tube sizes covered: 7/8"OD up to 4.1/2"OD
The AF3 series covers tube sheets from 1/2" up to 2.5/8" and different mandrels are available including Short series, Drum and Header.
Overlapping rolls prevent ridging of the tube.
Self retained rolls in the cage.
Compact design for use through small hand holes, headers etc.
General purpose designed boiler tube expander for flaring and expanding tubes in fire tube boilers, water walls, down comers, economizers and air heater tubes. This is an ideal expander if you intend to either tighten some tubes up or have a small amount of tubes to roll. If you need to manually bead the tubes back to the tube sheet as this expander will give the tube a 30 degree bevel.