Streamline copper tube sets the standard for quality, consistency and service in the plumbing industries With a full line of copper tube products to support most all plumbing supply and DWV applications, Streamline copper tube is available in all common types including Ktype, Ltype, Mtype and DWV Each piece of tube is incised marked and color coded for easy, longlasting identity Manufactured in accordance with applicable standards, our ongoing commitment to quality continues to make Streamline copper tube the preferred and specified brand of industry professionals