Air Compressor Water Well Rotary Drilling Machine For Mountain Rocks Area

Product Summary
ST-350 Air Compressor Water Well Rotary Drilling Machine for mountain rocks area. Drilling depth 350m, diameter 105-300mm, powered by Yuchai 91KW diesel engine. Features heavy-duty undercarriage, powerful air delivery, intuitive controls for efficient 10-35m/h footage. Balanced depth & efficiency for medium-deep water wells.
Basic Properties
Place of Origin: China
Brand Name: ShiTan
Certification: ISO
Model Number: ST-350
Trading Properties
Minimum Order Quantity: Negotiation
Price: Negotiation
Payment Terms: L/C,D/A,T/T,Western Union
Supply Ability: 2000Set/Year
Product Details
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Name: ST350 Pneumatic Borewell Machine
Model: ST-350
Voltage: 380V
350 Meters Depth Pneumatic Water Well Drilling Rig With One Well Per Day: 85/170r/min
Total Weight: 9.8T
Power Type: Diesel
Max Drilling Depth: 350m
Drilling Diameter: 105-300mm
Engine: Yuchai 91KW
Dimension: 6m×2m×2.5m
Product Description
Air Compressor Water Well Rotary Drilling Machine For Mountain Rocks Area
Product Overview

Field-proven and customer-refined, the Air Compressor Water Well addresses real-world drilling challenges head-on. The heavy-duty undercarriage, powerful air delivery system, and intuitive control panel work in harmony to reduce cycle times and improve borehole quality. It is the preferred choice for serious drilling contractors worldwide.

The 350 meter water well drilling rig is a medium-sized drilling equipment specifically developed for underground water wells at depths of 50-350 meters. Its core positioning is to "balance depth and efficiency", which can meet the needs of medium and deep water wells such as centralized water supply in towns and small and medium-sized industrial water use, as well as drilling in some complex formations (such as weathered rocks and thick sand layers). With the characteristics of "strong power, intelligent controllability, stability and durability", it has become the core equipment for scenarios such as water supply for people's livelihoods, industrial production, and mining area assistance.

Technical Specifications
Parameter Value
Drilling Depth 350m
Drilling Hole Diameter 105-305mm
Working wind pressure 1.25-3.5Mpa
Gas consumption 16-55m³/min
Drill pipe length 6m
Drill pipe diameter 89mm
Axial pressure 4T
Lifting force 24T
Lifting speed 20m/min
Fast forward speed 40m-min
Maximum turning torque 8900/NM
Maximum rotation speed 85/170r/min
Lifting force of small auxiliary winch 1.2T
High leg travel 1.35m
Footage efficiency 10-35m/h
Walking speed 2.5km/h
Climbing degree 30
Weight 9T
Overall dimension 5.2×2×2.35米
Adaptive conditions Loose layer and bedrock
Engine Yuchai 91KW
Core Configuration
Power and Structural Design Adapted for Medium-Deep Hole Drilling

Most 350-meter water well drilling rigs adopt hydraulic drive (a few use high-power electric drive). Their core configuration is optimized around the "torque, impact force, and load capacity required for medium-deep hole drilling" to ensure a balance between depth and efficiency:

  • Power System: Equipped with a 50-120kW diesel engine or electric motor, combined with a high-pressure hydraulic pump, it can output a torque of 1500-3000N*m and an impact force of 20-50kN. It can not only drive drilling tools to rotate and cut through thick sand layers and gravel layers but also break moderately weathered rock (e.g., limestone, sandstone) within a depth of 300 meters through the combined action of "hydraulic impact + rotation", avoiding the problem of "inability to drill in deep holes".
  • Drilling Tools and Hoisting System: Equipped with high-strength geological drill pipes (single length 3-6 meters) with a diameter of Φ89-127mm, which can withstand the axial pressure and torque during deep hole drilling. The hydraulic winch with a lifting capacity of 8-15 tons can quickly lower and lift drill pipes, reducing the auxiliary time for deep hole operations -- it only takes 1-2 hours to lift the drill string from a 350-meter depth.
  • Body Structure: Adopts a foldable or split-type frame. After unfolding, the whole machine has strong stability (equipped with 4-6 hydraulic outriggers for leveling, with a horizontal error ≤0.5%), avoiding hole deviation caused by the machine shaking during deep hole drilling. Some models can be equipped with a crawler chassis, adapting to muddy and gentle slope terrain in the field, and have better flexibility in entering the construction site than large deep well drilling rigs.
Core Advantages
Accurate Adaptability to Medium-Deep Water Well Scenarios

Compared with small-sized rigs (≤200 meters), the 350-meter water well drilling rig covers a wider depth range; compared with large deep well drilling rigs (≥500 meters), it has higher operating efficiency and lower costs. Its core advantages are reflected in:

Drilling Efficiency

For 100-200-meter sand layers, the average daily drilling depth can reach 30-50 meters, and a well can be completed in 3-5 days; for 200-350-meter formations containing moderately weathered rock, with a hydraulic impactor equipped, the average daily drilling depth is 15-25 meters, and drilling can be completed in 10-15 days -- which is 40%-60% more efficient than small-sized rigs at the same depth.

Depth Compatibility

The drilling depth can be flexibly adjusted. It can be used as a shallow-to-medium well within 200 meters (e.g., centralized water supply wells in rural areas) and can also drill to a full load depth of 350 meters (e.g., production water wells in small industrial parks). It can cover multi-depth needs without replacing equipment, reducing equipment investment costs.

Product Images
ST-350 Air Drilling Rig operational view Drilling rig close-up showing mechanical components Drilling rig in field operation Control panel and operator interface Drilling rig transportation configuration Hydraulic system detail Complete drilling rig assembly
Frequently Asked Questions
Q: What drilling rigs are in your catalog?
A: Our product range covers hydraulic water well rigs, core drills, engineering drilling machines, geological exploration rigs, and more. Let us know your requirements and we will guide you to the right model.
Q: Factory address?
A: Jinzhou, Shijiazhuang, Hebei Province, China. Our location in this industrial belt ensures efficient inland transportation to major container ports.
Q: Factory or agent?
A: Direct factory with 20+ years specializing in drilling rigs. ISO-certified, fully integrated manufacturing--we design, build, test, and ship from our own facility.
Q: Delivery timeframe?
A: 5-7 days for compact hydraulic rigs; 7-15 days for larger pneumatic models. Priority orders can be fast-tracked--talk to our team about your schedule.
Q: How long is the warranty?
A: One year on the entire machine (excluding consumable and wear parts). Free remote support included throughout the warranty period and beyond.
Q: Compressor lifespan?
A: Typically 10+ years with proper maintenance--a figure backed by thousands of machines operating in the field.
Q: Payment channels?
A: T/T and are our standard international payment methods.
Q: Export documentation?
A: Complete package provided: invoice, contract, packing list, bill of lading, insurance, and certificate of origin when needed.
Q: Support response time?
A: 24-hour online availability with most technical queries resolved under 48 hours.
Q: After-sales service?
A: Standard: remote setup and commissioning assistance. Optional: overseas engineer dispatch for on-site installation and training programs.
Quality Commitment

Built to Last
Since our founding over two decades ago, we have remained committed to quality manufacturing. Our Hebei factory employs rigorous quality control at every production stage, from incoming material inspection to final machine testing. ISO certification validates our dedication to excellence.

Jinzhou Shitan Machinery Equipment Co., Ltd. Main Products:

Pneumatic Drilling Rig / Air Drilling Rig(ST-180,ST-200,ST-260,ST-300,ST-350,ST-400,ST450,ST-450,ST-500, ST-600,ST-800 and other Pneumatic water well drilling Rigs.), Crawler Water Well Drilling Rig / Trailer Mounted Drilling Rig / Water Well Drilling Rig / Hydraulic Borewell Machine / Hard Rock Drilling Equipment / Diamond Core Drill Rig / Geological Drilling Rig / Soil Testing Drilling Rig / Portable Water Well Drilling Rig(ST-30,ST-50,XY-1A, XY-1B, XY-2, XY-2B,GK180, GK200, GY150, GY200 and 30 impact drill rig, ZLJ series tunnel drilling rig and other geological drilling machines)Crawler Track Undercarriage, Drilling Mud Pump(BW150,BW160,BW200,BW250,BW850 series Drilling mud pumps), Drilling Air Compressor, Water Well Drill Bits(PDC Drill Bit, Tricone Bit, DTH Button Bit), Water Well Drill Pipe, Drilling Rig Spare Parts( drilling rods , drilling rods joint , casing pipe, casing coupling, core tube, core tube coupling, lifters, automatic drop hammer, sampler, SPT tool, wrench fork, pad fork, lock joint), Track Transporter

Mrs. Anna

Manager

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