The machine can process steel bar whose diameter is from 12mm to 40mm, the rebar coupler can link the different diameter steel bars from 12mm to 50mm.

Machinery:
GD-150(upset foging machine) and GZL-45(threading machine) and an oil pump.

First, we use GD-150 to forging the end of rebar;

Second, we use the GZL-45 to threading the end of rebar;

Third, we use the coupler to link the two ends of rebar.The size of rebar coupleri is from 12mm to 50mm.