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Fins/tube assembling is done by 6 pipe expanders:

- new vertical expander for 2500mm finned package lenght (25x22 - 7,94[5/16"] - 9.52[3/8"] diameter tube ) with automatic tube's change
- two expanders, one circular and the other vertical, up to 1200mm
- one horizontal expander for 3000mm finned package length (25x22 - 30x26 geometry)
- two horizontal expanders for 6000mm finned package length, one of these is automatic and its working unattended.