CCFA-CA-DW-HD Ø 620/540 CCFA casing
Double-walled casing with 40 mm coupling, wall thickness 15/10 mm, light design. Drill casings can be used in the Kelly drilling process, however not when a casing oscillator is in use.
|Casing outside diameter||620 mm|
|Effective length||1,000, 1,500, 2,000, 3,000, 4,000, 5,000, 6,000 mm|
|Cutting diameter of tool Dc||520 mm|
|Equipment||Conical bolts, conical rings, threaded rings and locating keys|