MING Casing drilling system is designed for unstable ground conditions. In the process of drilling, it could carry the casing tube down to the hole and protect wall to achieve drilling work. MING casing drilling system include MRE Overburden casing drilling system, MNS Overburden casing drilling system, MKE Overburden casing drilling system, MRS Overburden casing drilling system, MRHK Overburden casing drilling system, MNX Overburden casing drilling system, MRING Overburden casing drilling system, MKT Double Casing Drilling system