Changsha international construction machinery exhibition, as a world-class construction machinery exhibition built purely by Chinese people, has attracted extensive attention from hundreds of mainstream and industry media at home and abroad.

Changsha Tianhe Drilling toosls and Machinery Co.,Ltd Display the following products

1) 3.5inch-24inch DTH hammer

2) DTH bits

3) Concentric casing system tools with ring bits

4) Concentric casing system tools with blocks

5) Adaptors and casing shoes