EN 
US
ES
PT
SV
DE
TR
FR
UNIDRILL kelly bar
By Li Chenyu / hcfire360 November 2019
A famous bridge in China starts construction work, pile diameter 2.5m, pile depth 132m, honour to choose UNIDRILL kelly bar and roller bit core barrel, and we also believe that it's a wise choice. We are always confident in our product quality and the service we supply.
