Min. Order Reference FOB Price
1 Piece US$3,840.00-4,224.00 / Piece
Product Description
Durable Overburden Symmetrical Concentric Casing Drilling System for Hard Rock Drill Product Description MRS Concentric under reaming drilling system is designed for unstable ground conditions. In the process of drilling, it could carry down casing pipe to the hole to protect wall to achieve ...