الوصف

1.being used in the base of building for the operation of drilling a hole  and also being used in the field of electrical power engineeringtelecommunications engineeringmunicipal constructionhigh-speed railhigh wayoilforest construction
2.can be inset into rock stratum by its large torque driving equipment.
3.The diameter of spiral drill pipe can be selected from **0mm to **0mm .
4.being widely used in rotary excavating tree pit、the pile hole forming and aforehand drilling of ice blasting.