... make thread on bar end. Bar dia is from 14mm to 40mm. Max threading length : 300mm Rebar rib-peeling ... machine1) Brief introductionFunction : for rolling thread on rebar end.Bar diameter : 12,14,16,18,20,22,25 ... ,28,32,36,40,502) Working principleFirstly : peel rebar ... thread angle 60°/75°.3# roller , for 36mm-40mm rebar , pitch i 3.5mm , thread angle 60°/75°.Blade ...