... clamping forde:250-32000KN Superhard screw for injection molding machine Screw materialsGrade A super hard screw Base material is ... for processing of 50-60% fiberglass, Bakelite, dynamoelectric injection machine, magnetic particle ,ceramic powder, aluminum and magnesium powder, ferrous ... the nylon plus 20%-40% fiberglass , PC,PVC, acryl, transparent plastic. The service lifetime of four or six times ...