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 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. Streamline® copper tube for use in plumbing and mechanical applications. Each piece of tube is incised marked and color coded for easy, long-lasting identity.