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In certain models, the internal
fins are replaced by ribs
(or even a smooth surface).

Rectangular cast-iron tubes

Modular Tubes can be either finned outside, inside or on both side.

The end of each module is moulded in a form of flange.

They are made of two halves wall bolted together, with gaskets to ensure gaz-tightness.


Heat Exchange are generally finned on inside and outside but this configuration may be adapted in order to limit the metal temperature and incrase the corrosion resistance on the colder parts.

The best configuration is designed thanks to computer-assisted simulations and allow the adaptation of the profile, dimensions and distribution of the fins.