Min. Order Reference FOB Price
1 Piece US$1,000.00-2,000.00 / Piece
Product Description
Standard spiral drill collar for well drilling Product Parameters Drill collar Number and Connection (mm) Outside Diameter (mm) Bore Diameter (mm) Length (mm) Shoulder guide angle diameter mm NC23-31 79.4 31.8 9150 76.2 NC26-35 88.9 38.1 82.9 NC31-41 104.8 50.8 ...