a. Hollow Tubing and Pipe Plastic extruded pipes are commonly used for PVC sewer and water pipes. Industrially, they are used to transport gasses and liquids that PVC cannot handle. Larger sewer pipes have an average diameter of several feet. Plastic tubing is found across industries, used to move fuel in small gas engines, oxygen in the ICU, and soda in a drinking straw.
b. Profile Shapes Extrusion is used to make long cross-section shapes. Extruded shapes include plastic rain gutters, squeegee and windshield wiper blades, and automotive trim. Vinyl siding is born of extrusion, too. Like similar exterior-grade plastic parts, vinyl siding does not require maintenance and can withstand the elements.
c. Film and Sheeting Extrusion finds another application in polycarbonate sheeting. This impact-resistant material is used in machine guards and window glazing. Its thickness varies from thin films to several inches. Moreover, plastic extrusion turns acrylic plastics into thin sheets to replace glass. Extruded clear plastic films commonly protect foods and modern retail packaging in the short-term. These films use blister packs. Such packs are extruded hard films that are softened by heat then molded into the proper shape.
d. Solid Shapes Extrusions in love with the shape of plastics. Machine shops use plastic shapes as raw materials. Shapes can be square, round, rectangular, and hexagonal bar stock. You can find all standard thermoplastics in myriad forms, sizes, and lengths.   Planks, extruded decking, and other popular structural pieces count as solid shapes, too. Lumber and plastic decking make good use of recycled plastics because they are non-critical and big. Park benches, fencing, and outdoor furniture are all built with pieces of extruded plastic. They are splinter-proof, weather-proof, maintenance-free, and more durable than any outside wooden member.