Eccentric Overburden Drilling Tool (108-323mm)
Changsha Miracleland Import & Export Co., Ltd.- Customized：Customized
- Color：Yellow
- Outside Diameter：108-323mm
- Standard：ISO
- Usage：Oil Mining, Coal Mining, Well Drilling
- Material：Carbide
Base Info
- Model NO.：108-323mm
- Condition：New
- Transport Package：in Plywood Case
- Origin：Changsha, Hunan, China
- HS Code：8207199000
- Production Capacity：100 Sets,Month
Description
Basic Info.
Model NO. 108-323mm Condition New Transport Package in Plywood Case Origin Changsha, Hunan, China HS Code 8207199000 Production Capacity 100 Sets/MonthProduct Description
OPERATION GUIDELINES:1. When drilling starts, the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly.
2. When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in, allowing the drill bit assembly to be pulled up through the casing.
3. Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent.
4. Drilling continues to the desired depth in the bedrock using a conventional drill string.
