What is the maximum diameter rebar a bending machine can bend?

Quick answer: the largest rebar we bend is 65 mm (A3 mild steel) on the GJZD6-65CZ CNC bending machine. For the ribbed grades used on most sites, the practical ceiling drops with the steel grade — always read the diameter against the steel grade, not as a single number.

Diameter ladder across our range: 25 mm on the GW25 stirrup bender, 32 mm on the GDLWZX-32 vertical bending center, 40 mm on the SKDZWH-36 arc bender, 50 mm on the GJZD6-50CZ and GWH50CG arc bender, and 65 mm at the top on the GJZD6-65CZ. Each machine is a 380 V / 50 Hz three-phase unit.

How to choose: match the machine to the largest rebar you actually bend, not the largest you might one day. Bending 32 mm and smaller covers most building and bridge work; 40–65 mm is for heavy industrial and hydraulic-engineering jobs. Buying a 65 mm machine to bend 12 mm rebar wastes money and floor space.

See the GJZD6-65CZ and GJZD6-50CZ, or send us your largest rebar size on WhatsApp for a matched recommendation.