... , fine chemicals and oil. Made of quality stainless steel or carbon steel sheets, perforated filter tubes and cylinders can be ... following when you order perforated tubes from us:Materials: stainless steel, aluminum, or other materials.Hole pattern: Micron round, ... requirements for tubing strength and filtration.The mostly used stainless steel perforated tubes include 304, 304L, 316, 316L. Carbon ...