• Airxpa Engineers

Tube Expanders

Airxpa Engineers has developed a range of tube expanders, which form perfect mechanical seal between the tube and the tube sheet. These tube expanders produce a smooth, unrigged surface in heat exchangers and condensers, oil and air coolers, pre-heaters, radiators, super heaters, boilers, economizers, juice heaters evaporators, etc. Designed for long service, the tube expanders feature an adjustable ball bearing thrust collar to eliminate frictional heat. Rolls have gradually tapered noses to eliminate sharp offsets in the rolled tubes and ensure uniform tube tightness throughout the thickness of the tube sheet. Adjustable tube expanders are available with 6.3-102 mm OD tubes of various sheet thicknesses, and fixed roller length tube expanders with 20-102 mm OD tubes and 26-95 effective expansion. The device can be used manually or with electric or hydraulic tube expansion equipment.