The Greco-Roman wrestler defeated Rupin Sonipat from India 3-1 in the final match of the 55kg.
Dadmarz had defeated Japanese wrestler Taiga Onishi (8-0) and Uzbekistan’s Ikhtiyor Botirov (8-1) before booking his place in the final.
The Championships started on April 9 in Astana, Kazakhstan and will run until April 14.
The six-day event will determine the seeds for the World Championships to be held in mid-September in Serbia. The World Championships, consequently, will serve as the qualifying event for the 2024 Paris Olympics.