Smooth HDPE Plastic Sheets. A&C Plastics stocks a large selection of smooth HDPE sheets. With a very low efficient of friction, our smooth HDPE sheets can be easily fabricated. Cutting, machining, welding, and thermoforming our smooth HDPE sheets is not problematic. Good chemical resistance makes HDPE great for numerous applications. Aside from being easily fabricated, our smooth HDPE is moisture, chemical, and impact resistant and offers superior tensile strength.