in both "Step" and "Chevron" configurations. Manufactured with high
quality alloy steel, the blades are reinforced with tungsten carbide
These bits perform best in softer, unconsolidated formations
(limestone sandstone - marl).
Widely used in mining, construction, exploration and water well
Used in a variety of formations and drilling applications, the
replaceable blade feature allows flexibility in blade selection and
easy replacement. Available in sizes from 3-7/8" Chevron & Step
through 5-5/8" Chevron and 6-1/4" Step. The total unit consists of a
set of blades, head & bowl, and adaptor sub in a variety of pin
sizes and options.
These drag bits are meant for jobs of opening Jet Gruoting
columns when cement is injected with pressures from 100-600 bars.
injectors can have several sizes as 45° for horizontal jet(tunnels)m
or 90° for vertical or sloping jet.
Lost in the hole drag bits are meant for special jobs when the drag
bit is welded or screwed in a tube of the same diameter and the
drilling rig drills up to the necessary depth.
When the job ends the drag bit and the tubes remain in the hole.
A bladebit reinforced
synthetic polycrystalline diamondforsoft/medium