Backed up by the rich engineering experience, Boss screw is the first choice when it comes to supplying a best screw and barrel in China. We specialized in the manufacturing and refurbishment of extruder screws and barrels for the rubber, plastics and feed industries. Qualiy is the vital factor in business. We believe that to sustain in competitive market quality of our products becomes our marketing strength. We strictly select high-quality alloy steel (38CrMoAIA, SKD11, SKD61) to produce screws and barrels. Our products have features of high precision, wear resistance and corrosion resistance through heat treatment, Nitriding treatment, Hard-chrome electroplating, Bimetallic alloy welding and other processing ways. We have team of QA which ensures the best products is delivered to prospective as well as current customers. We can manufacture most types of extruder screws, injection moulding screws, twin screws and rubber screws used in the plastics, rubber industry’s, ranging from the smallest lab screw up to screws of 600m/m dia and 6 metres in length, using all types of Hard facing materials. We have machinery which is imported from the overseas market to make sure best quality screw and barrel is manufactured in our premises. We have an all types of machinery in premises such as welding, lathing; holing & so on so that the screw barrels made our factory are the best one compared to that made by other supplier in the same industries.