Stainless Steel Perforated Steel Tube Stainless Steel Perforated Steel Tube Product Introduction: piral welded perforated tube is also be called perforated tube, Spiral welded tube, Spiral tube, Skeleton of filter element.   Stainless Steel Perforated Steel Tube specification: Material 304 or 316 stainless steel OD 50mm-300mm Length Less than 2m Thickness 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm etc. Standard hole size 3mm Standard hole interval 5mm Tolerance Less than 0.1mm special material and requirements can be customized as well   Stainless Steel Perforated Steel Tube feature: 1.Large support, high roundness, high straightness, higher strength than straight seam welded tube. 2.Small raw materials manufacture large welded tube. Stainless Steel Perforated Steel Tube application: Petroleum, Petroleum extraction, chemical industry, Sewage treatment, power plant filtration, purification water treatment equipment.