... steel 3.layer:1.2.multilayers perforated stainless steel tube(food/industrial grade) MaterialStainless steel,steel,copper,nickel, ... 0010-30010-500 Characteristics• simple process, good permeability, stability • strong corrosion resistance, recycling • easy to clean, easy installation, high ... For petrochemical industry, water treatment processing perforated stainless steel tube(food/industrial grade)