Polymers Processing Methods ExtrusionCustom Plastic Fabrication & Extrusion : Crescent Plastics home location capabilities tooling custom pipe quality case studies contact us The Shape of Things to Come There’s something to be said for specialization, and at Crescent Plastics we specialize in custom plastic extrusions and fabrication. Others may do custom work as a sideline to their commodity plastic plumbing pipe or injection molding businesses. Not Crescent. We leave those goods in the competent hands of our affiliate companies, Cresline Plastic Pipe Company and Wabash Plastics . We fo