Purchase Qty. Reference FOB Price
1-4 Pieces US$915.00
5+ Pieces US$825.00
Product Description
Manufacture MRE Overburden Casing Drilling Systems Ring Bits for Oil Well Drill Product Description MRE Concentric under reaming drilling system is designed for unstable ground conditions. In the process of drilling, it could carry down the casing pipe to the hole to protect wall to achieve ...