The finning is mechanically very robust due to the roll hardening and offer a maximum of protection against corrosion, since there are no gaps between the fins and therefore no electrostatic differences. This is reflected in the long service life of the flnned tubes, which are successfully used even for wood drying kilns.
We design, built and continuously optimize the finning machines build by us. We have worldwide more than 64 extrusion machines in operation.