... 3.ISO Quality Management System 4.Professional Exporter 1045 different type Industry Sprocket Specification MaterialC45, A3, 40Cr, 20CrMnTi, 42CrMo ... or customer requirement.Industry Roller Chain Sprocket-Simplex Type B Product range from simplex,duplex,triplex quadruplex, ... price.3.A wide range of precision in house machining capablities.4.Industrial roller chain of sprocket style are simplex, duplex ...