Perforated Filter Tube Steel plated,stainless steel aluminum and other metals Diamond, slotted and decorative openings ... Steel, Galvanized Steel, Carbon Steel, Aluminum, and all types of metals. Perforated Filter Tube Perforated metal can be fabricated into ... for screening. Madewith advanced digital controlled equipment,perforated filter tube has high precision, lowdifference and strong filtering. The ...