... nozzle, rings for injection screw&barrel Chenshi Machinery is a professional manufacturer for all kinds of screw and barrel in this field for 15 years ... Si, Ni, S, P, CuStainless steel: Cr, Ni, Ti, Mn, N, Nb, Mo, Si, CuSKD61: C, Si, Mn, Cr, Mo, V ... application Certification Our advantages:1. Screw and barrel for various models 2. Professional engineers design for you 3. Thousands of drawings can supply ...