... needing hardened teeth sprocket, please see hardened teeth sprocket table.25B, .35B, 40B, 41B, 50B, 60B, 80B, 100B, 120B, 140B, 160B ... , steam or chemical corrosive conditions as acid and alkaline.SUS 25B, SUS35B, SUS40B, SUS60B, SUS80B.Double pitchWe can provide following double ...