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wedge wire slot tube Slot tubes are welded structures with the support rods in the axial direction of the tube and surface wedge wire around the support rods. They have the unique advantage of very accurate, narrow slot openings and perfect roundness all in one. Slot tubes can be provided with the necessary end pieces for attachments and/or reinforcements. Normal construction of slot tubes allows for flow out to in filtration. However, flow-in -to-out constructions are also