Mainly used in petroleum, chemical industry, pharmacy, foodstuff and water treatment . Filter Strainer Tube Major materials used are stainless steel woven wire mesh, perforated metal, expanded metal and metal fiber web. The outside sizes and filtration rating Perforated Stainless Steel Tubes Used for Water 23 rowsMore Technical Details The mostly used stainless steel perforated tubes include 304, 304L, 316, 316L. Carbon steel can also be used . Perforated stainless steel tubing is made of either T304 stainless steel sheet or T316 stainless steel sheet that has been punched with a series of holes to give you a nominated pattern.The pattern can vary depending on the hole size, distance between holes and Perforated Stainless Steel Tubes Used for Water Treatment