Chinese brand down-the-hole drill factory address

Jiucaiyuan road, Furong District, Changsha, Hunan,China Worktime: 9:00-6:00 (Beijing time) Business Phone : 86-731-85551632 (Working time) 86-731-85551632 (Nonworking time) FAX : 86-731-85551635 Email : [email protected] View More >> [pdf]

How to use a Chinese handheld rock drill

When using a hand held rock drill, it's important to follow the manufacturer's instructions carefully. This includes using the right drill bit for the type of rock you're working with, as well as following the recommended drilling speed and pressure. [pdf]

Diverter system drilling rig

Where shallow casing strings or conductor casing pipes are set, fracture gradients will be low. It may be impossible to close the blowout preventer on a shallow gas kick without breaking down the form. [pdf]