Fiberglass tubes are used in all types of industries in all parts of the world for all kinds of purposes. But perhaps their most widespread use is to move corrosive or caustic liquids. Resilient, flexible, strong and inexpensive, fiberglass makes superior tubing for plumbing, manufacturing, and chemical and oil production. Choose from round or square fiberglass tubes. You can stock up on fiberglass rods and pipe and tubing cutters as well.