Screw  and Barrel of extrusion plant are of ordinary type, gradient type, mutant, barrier type, pin type, etc.  Screw and barrel are the primary elements of extrusion screw machine meant for  heating and making plastic of materials in an extrusion head. The ratios and additional coating are also made according to clients requirements for manufacturing purpose, the number of the screw head can be a single head, twin head or long barrel, you can choose it with various other properties.  Screws of twin-screw have more elaborate design, hooking conical or parallel screws revolved in opposite directions. This screw and barrel are generally used on all kinds of plastic machinery,  such as injection molding machinery etc.

 They are wear-proof, corrosion-proof, heatproof, and high-pressure proof.  Our screw and barrel are also for super-hard plastic injection machine.