galvanizing lines and aluminising lines
for the selective application of zinc or aluminium to continuously operated steel strips
DUMA galvanizing and aluminising lines are characterised by their outstanding coating results using a minimum of layer metal. Moreover, the equipment is robust in service and easy to maintain and to handle.
The scope ranges from cost-effective basis machines to individually customised high end models comprising all features for maximising the machine capacity as well as simplifying operating.
DUMA air knife

DUMA air knife
Features of DUMA galvanizing lines
The following features are characterising our machine design
- Very massive finish of the units to avoid vibrations
- High accuracy of pressure distribution at the air knife lip (less than 1% pressure difference all over the knife gap length) due to integrated radial controllers
- Supply of the DUMA galvanizing line according to customer requests employing a 3-roll or 2-roll system
Animation integrated radial controller:

3-roll-system
2-roll-system
- Quick pressure regulation via blower control and radial controller (less than 6 sec. for pressure changes)
- Rapid mounting and short reconstruction periods, as all adjustment devices are completely mounted, tubed, cabled and adjusted to base plates.

sub-assembly
- Easy installation of auxiliary equipment to the knife adjustment due to the extremely massive finish of the equipment
- Permanent strip adjustment in pass line via separately adjustable stabilising rolls and correction rolls
- Considerable decreasing of noise level, considerable reducing of nitrogen costs in nitrogen mode by blowing in the area of the present strips via integrated knife gap length adjustment

preheating oven for one roll set
assembly fixture for one pot roll
transport cart for one roll set
mounting table for air knife

test desk for air knife
edge masks with touch roll
air knife
roll shop
DUMAjet II

DUMAjet II – for general applications we offer additionally to galvanising devices for exposed material the simple constructed DUMAjet II