... -200mm Effective length:4000mm Chenshi Machinery is a professional manufacturer for all kinds of screw and barrel in this field ... , Ni, S, P, CuStainless steel: Cr, Ni, Ti, Mn, N, Nb, Mo, Si, CuSKD61: C, Si, Mn, Cr, Mo, V, S ... Certification Our advantages:1. Screw and barrel for various models 2. Professional engineers design for you 3. Thousands of drawings can supply ...