... make thread on rebar end, so that it can accept coupler, to realize bar connection. Rebar rib-peeling and threading machine1 ... ,16,18,20,22,25,28,32,36,40,502) Working principleFirstly : peel rebar rib by cutting blade.Secondly : rolling thread ... : for peel rebar ribs , for 14mm to 40mm rebar.6) Working speedUsually it takes 30 seconds to 40 seconds to finish ...