Spiral wrapped surface profile

Slottubes are composed of a surface profile that is spirally wrapped around axial support profiles and attached to each other by resistance welding. These filter elements have the unique advantages of very accurate, narrow slot openings and perfect roundness all in one.

Welded Screens & Strainer Baskets

Flat screen surface profile

Trislot® welded screens are directly produced as a flat screen. This avoids the chance of stress corrosion and the weakening of the welds, which does occur with opening and flattening slottubes (this is the normal way to manufacture flat screens).