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Description
Reverse Circulation drill rod (also called dual-wall drill pipe) comprises an outer and inner pipe with a sealing system (usually 0 Rings) to keep the drill string pressurized. As RC drill rods are subjected to high wear in the drilling process Prodrill use only the high quality hardened alloy steel for the both rods and tool joints.
|
Length(Less bit) |
Weight(Less bit) |
External Diameter |
Bit Shank |
Hole Range |
WorKing Pressure |
Air Consumption |
|
|
1020mm |
94.0kg |
99mm |
JRC45 |
114-127mm |
1.0-3.0Mpa |
1.0-2.4Mpa |
8-16m3/min |
|
1111mm |
66.5kg |
126mm |
JRC55 |
133-152mm |
1.5-3.5Mpa |
1.7-3.0Mpa |
16-28m3/min |
|
1250mm |
110.0kg |
146mm |
JRC65 |
155-190mm |
1.5-3.5Mpa |
1.7-3.0Mpa |
20-35m3/min |
|
1208mm |
70.0kg |
126mm |
JRC52 |
133-146mm |
1.5-3.5Mpa |
1.7-3.0Mpa |
16-28m3/min |
|
Bit Shank |
Bit Diameter.(mm) |
|
JRC |
115,140,165mm |
|
MIC |
133,140,146mm |
|
PR5 |
133,140,146mm |
|
PR4 |
115,127,133mm |
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