Tube expander for straight rolling or rolling and flaring very thick-walled tubes in cracking furnace tube seats for tubes outside diameter from 50 to 250 mm (2" - 10") and gauges from 6 to 15 mm (0.19" to 0.59"). Flaring 10 to 15 degree. Roll length 38.1 to 101 mm (1-1/2" - 4"). Made on request to drawing of the tube seat.
These are fixed rolling length special purpose tools which may be power or hand-driven. They are self-feeding parallel-rolling type.
When ordering please give precise details of vessel in which the expander is to be used, quoting size and length of tube, distance over tube plates, tube plate thickness and any tube projection details. Ideally a drawing should be provided.
LINSEN - expanders can be power driven by electric drill, pneumatic drill. Designed to produce tube end connections without fittings. Enlarges tube end without distortions or buckling and leaving. 0.015" (0.38 mm) clearance that another tube with the same outside diameter can be inserted and soldered. It is excellent for U-tubes, short bends, for copper, brass aluminium and thin steel tubes. Available from 3/8" (9.5 mm) to 2" (50.8 mm). For more details contact factory.
NE notching&expanding type tube expander for thin tube sheet and thin wall tubes. Expand and notch the tube in one operation. The notches lock the tube in front and back side of the tube sheet and prevent to unseal during the transportation or expanding the near by and already expanded tubes. The expansion range is adjustable within 0.005 mm. Do not need the torque controlled drive.
Special expanders with multi row rolls to expand several tube sheets (or baffles) in one operation.
Available only in limited diameters and lengths.
Made on request only upon drawing of the heat exchangers.