1.perforated stainless steel tube(food/industrial grade)2.material:304,316stainless ... .layer:1.2.multilayers perforated stainless steel tube(food/industrial grade) MaterialStainless steel,steel,copper,nickel,titaniumspecificationtable ... Application• For air, dust, industrial gases & medicine • For food, beverages, agriculture & refrigeration • For petrochemical industry, water treatment processing ...