Down the hole drill rod, mining drilling vehicle matching drill rod, 42 type 64/76/89 drilling rig d

Características do produto：

Drill rod of down the hole drilling vehicle improves work accuracy and production efficiency

Pontos de venda de produtos：

① Exquisite workmanship, reliable quality, high-quality materials selected, good surface gloss and concentricity.

② Strong power, high efficiency and performance, fast drilling speed, wide range of applications, time-saving and labor-saving.

③ Easy installation, standard manufacturing process, standardized dimensions, and small errors.