800mm-1200mm Length Drill Rod with Taper or Thread for Stone
|10-99 100-499 500+|
|FOB Unit Price:||US $15 US $14 US $12.9|
|Purchase Qty. (Meters)||FOB Unit Price|
|Production Capacity:||10000 Meter / Month|
|Transport Package:||Wood Case or Bundle|
|Payment Terms:||L/C, T/T, Western Union|
- Model NO.: R25, R22, taper degree 7, 11, 12.
- Usage: Quarry Small Hole Drilling
- Taper Degree: 4, 7, 11, 12
- Materials: 95crmo
- Thread: R25, R22, R28, R32
- Specification: SGS, CE
- HS Code: 82071990
- Length: 360mm
- Material: Carbon Steel
- Hexagonal Bushing: 22*108mm
- Match Rock Drill: Pneumatic Rock Drills
- Trademark: Prodrill
- Origin: China
Drill rods with thread end have several advantages on the tapered connection threads. Namely, it is possible to extend these rods with extension rods.This way you can drill to great depths.
In general drill bits with thread connections are also easier to release from the drill rods than drill bits with tapered connection threads.
lso the risk that the drill bit is released from the drill rod on retracting the rock drill is even smaller with a threaded connection than with the tapered connection
Steel grade: 95CrMo Equivalent to SANDBAR 20 or C253, 55SiMnMo
Size: hex.19mm, hex.22mm, hex 25mm
Taper degree: 4, 7°11°and 12°etc.
Thread type : R25, R22, R32.
The tapered angle of 4. 6, 7, 11, 12 degrees, also known as taper degree, is ideal for drilling with pneumatic rock drills for small hole such as dimensional stone quarry, and another rod is shank rod
The connection thread offers the best grip and the least chance of slipping or releasing of the drill bit.
Various other tapered connection threads can be supplied on request
Tapered Rod spec :
|Length in mm||Length in feet||Part number|