... Steel Perforated Tube The mostly used stainless steel perforated tube filter 304, 304L, 316, 316L. Carbon steel can also ... will determine the strength of the support tube and the filter flow.Hole size and thickness: Various to meet different requirements ... 0.2mm to 100mmProcesses involved in making of perforated tube filter perforating, flattening, rolling, cutting, bending, edging, welding and ...