Advantages: Bar-break feature guarantees fully ductile elongation. No reduction of the bar cross-section area. Working principle: 1, first, we use gq50 rebar cutting machine to splice up the end of rebar. 2, secondly, we use upset forging parallel thread machine (bdc-auto1 machine) to forge the end of rebar. 3.Third, we use parallel thread cutting machine (lw-i500 machine) to thread the ends of the rebar which have been forged. 4.Fourth, an upsetting coupler is used to link the two ends of rebar in parallel thread.
