Purchase Qty. Reference FOB Price
1-4 Pieces US$900.00
5+ Pieces US$860.00
Product Description
140mm Symmetric Overburden Casing Drilling System for Mining, Well Drilling Product Description Working principle: At clockwise condition, reamer bit expanded to bring the casing tube into hole. After finished, reamer bit closed anticlockwise and then can be lift up by the drilling machines. This ...