OEM Color High Drilling Speed Water Well Drilling Equipment,ST 400 Pneumatic Borewell Machine
ST 400 Pneumatic Borewell Machine Product Information
The drilling machine adopts steel crawler chassis and has strong cross-country ability, Excellent mobility. The rig is equipped with large torque hydraulic motor and large bore hydraulic cylinder, especially suitable for water intake project in mountainous rock stratum. It has the advantages of large diameter, deep drilling, fast footage, flexibility and high efficiency.
ST 400 Pneumatic Borewell Machine Main Technical Data
| Drilling Rig Model | ST 400 Drilling Rig |
Max drilling depth | 400 Meters |
| Drilling diameter | 105-325mm |
| Air pressure | 1.2-3.5mpa |
| Rod length | 89-102-114mm |
| Main shaft pressure | 5T |
| Lifting force | 25T |
| Power head stroke | 6.6M |
| Max rotary torque | 12000Nm |
| Max rotary speed | 100r/min |
ST 400 Pneumatic Borewell Machine Advantage
1. It improves drilling efficiency and reduces labor intensity With hydraulic automatic feeding mechanism.
2. It can be achievedwithout stopping to change rods, easy to operate, safe and reliable with ball clip holding mechanism orhydraulic chuck.
3. It hashole bottom pressure gauge to be easy to master the situation in the hole.
4. It also has advantage of Compact structure,concentrated handle, small footprint, light weight, strong decomposition, easy tomove. It can be operated in plains and mountainareas.
ST 400 Pneumatic Borewell Machine FAQ
Q 1: Are you a manufacturer or a trading company?
A:We are a 20 years professional manufacturer with ISO certificate. We have a large modern drilling rig plant in Hebei, China.
Q 2: How long is your delivery time?
A: Small hydraulic drilling rigs generally take 5-7 days, and large pneumatic water well drilling rigs generally take 7-15 days. If there is an urgent order, please contact our sales in advance.
Q 3: How long is the warranty of your well drilling rig?
A: Except for consumable spare parts, the whole machine shall be one year.
Q4: How long can your air compressor be used?
A: Normally more than 10 years.
Q 5: What are the terms of payment?
A: TT, Western Union transfer.
What method is used for the operation of a water well drilling rig
The working process of water well drilling rig is inseparable from the use of pump, which is used for reverse circulation operation. Under the action of atmospheric pressure, the circulating liquid flows from the sedimentation tank through the return ditch to the bottom of the well along the annular gap of the well hole. At this time, the rotary table drives the drill pipe and drives the drill bit to rotate for drilling. The negative pressure established by the suction of the mud pump sucks the debris mud into the inner cavity of the drill pipe, then rises to the faucet and is discharged into the sedimentation tank through the mud pump. The precipitated circulating liquid continues to flow into the well hole, which goes on and on, Reverse circulation drilling work has been formed. Mud or water enters from the drill pipe and flows out from the wellhead. It is a positive circulation drilling machine. Mud or water is sucked out from the drill pipe and flows in from the wellhead. It is a reverse circulation drilling machine. Positive and negative circulation refers to the circulation mode of drilling fluid in the drilling machine. It is said that the drill bit of the drilling machine will produce muck, slag and stone during drilling, which can be brought out by mud through positive and negative circulation.
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