Min. Order Reference FOB Price
1 Piece US$500.00-2,000.00 / Piece
Product Description
Oilfield Drill Collar Spiral Drill Collar Product Description Boban series drill collar is used between the drill pipe and the bit in the drill stem. It is used to put weight on the bit so that the bit can drill. Materials Drill collars are manufactured from AISI 4145H modified steel, and are ...