For use in rough circumstances, for instance in stone separators, we can make the rods out of stronger materials. Here we use CrSi steel (spring steel, class super C) CrSi steel is harder and tougher than spring steel class C. Furthermore it has all the properties of regular spring steel. CrSi steel is available in the diameters 8, 9, 10, 11 and 12mm. A great advantage of CrSi steel is the fact that it is very suitable for welding.
Stainless steel is often used in water. All metals used in the sieve web are then of stainless steel. It is not possible to make a centre flattening in a stainless steel rod. If a centre belt is required, attachment onto the belt will be made with centre clips. Stainless steel is available in the diameters 6, 8, 10 and 12mm.