1.Single screw barrel for injection 2.Material:38CrMoAIA,SKD61 3.Suit for pvc pipe,film,sheet,cable.. 4.Long worklife Single Screw Barrel for Injection moulding machine Diameter30mm-250mmMin.Order1 ... , varied Screws and Barrels and spares. We concentrate on improving quality, updating design and enhancing service. 2 Our products:Screws Barrels for Injection, Extrusion, and Blow Molding ...