Dfj-220A Mjs Method Omni-Directional Micro-Disturbance Drilling Rig for Tunnel Engineering

• After-sales Service: Video Technical Support
• Warranty: 1 Year
• Certification: ISO 9001:2015
• Model NO.: DFJ-220A
• Condition: New
• Drill Hole Diameter: φ90/φ114/φ142/φ170/φ216mm
• Bit Type: Alloy Bit
• Drilling Way: Rotary
• Type: Jet Grouting
• Rotary Output Speed: Level 0-11/0-21 Infinitly Varivable Speed
• Rotary Lifting Speed: Level 0-5 Infinitly Varivable Speed
• Rotary Output Torque: 6800/13000n.M
• Feed Frame Travel: 1000mm
• Rotary Lifting Force: 190kN
• Rotary Down Pressure: 110kN
• Transport Package: International Standard
• Specification: 4100*2785*7450mm
• Trademark: DUNYYU
• Origin: Jiangsu, China
• HS Code: 84304100
• Production Capacity: 10sets/Month
• Package Size: 415.00cm * 217.00cm * 284.00cm
• Package Gross Weight: 9500.000kg

Product Description

MJS Method Omni-Directional Micro-Disturbance Super Jet Grouting Drilling Rig 

Product Description

Model DFJ-150, DFJ-150A, DFJ-220A are our most hot-selling MJS Method jet grouting drilling rigs. Compared with conventional jet grouting rigs, it offers significant advantages. In other words, it is omni-directional micro-disturbance super jet drilling rig.
MJS Method (Metro Jet System Method) is an advanced ground improvement technology that has been innovatively upgraded based on the introduction and assimilation of international advanced technologies, combined with domestic engineering practice requirements. Through its unique active pressure control system, this method enables micro-disturbance construction in various complex environments and has become an important technical solution for ground treatment in urban sensitive areas. Dunyu Heavy Industry MJS Method has become a preferred solution for ground improvement in complex urban environments. It has achieved remarkable application results in metro projects in cities such as Shanghai, Guangzhou, Nanjing, Wuhan, and Hangzhou, demonstrating excellent technical performance and reliable product quality.
Applications
  1. Critical Waterproofing - Widely used for constructing cutoff walls in metro tunnels and utility tunnels, performing exceptionally well in sensitive areas adjacent to operating subways, important structures and dense utility networks.
  2. Omni-directional Construction - Capable of executing vertical, horizontal and inclined drilling with equal proficiency.
  3. Proven Ground Adaptability - Achieves maximum reinforcement depth of 60 meters, forming high-quality elements in various ground conditions including gravel, sand and soft rock.
Features
  1. Real-Time Ground Pressure Control - Utilizes unique monitoring system with sensors at the drill head to track formation pressure changes, ensuring precise construction control.
  2. Active Pressure Management - Equipped with specialized multi-channel drill rods and forced spoil discharge to prevent surface heave and ground disturbance.
  3. High-Capacity Jet Grouting - Powerful single-nozzle system delivers 40MPa jet pressure with coaxial air shielding, creating uniform piles up to 2.5m in diameter.
Advantages
  1. Minimal Disturbance - Significantly reduces impact on surrounding environment, ensuring the safety of adjacent structures.
  2. Proven Quality - Creates uniform piles with reliable strength (≥1.5MPa).
  3. Eco-Friendly Operation - Centralized slurry treatment minimizes site pollution.

Product Parameters

Drilling Rig Model		DFJ-220A		Swing Angle		Computer setting
Spindle Bore(mm)		φ225		Feeding Frame Travel(mm)		1000
Drill Pipe Diameter(mm)		φ90/φ114/φ142/φ170/φ216		Rotary Lifting Force(kN)		190
Rotary Output Speed(r/min)		Level 0-11/0-21 infinitly variable speed		Rotary Down Pressure(kN)		110
Rotary Output Torque(n.M)		6800/13000		System Pressure(bar)		250
Rotary Lifting Speed(m/min)		Level 0-5 infinitly variable speed		Input Power(motor)(kw)		45+1.5
Stepping and Lifting Device		Automatic Control System		Transport Dimension(mm)		4100*2170*2835
Step Interval		Computer Setting		Vertical Dimension(mm)		4100*2785*7450
Drill Type		Alloy Bit		Machine Weight(kg)		9500

Detailed Photos

Company Profile

Wuxi Dunyu Heavy Industry Technology Co., Ltd. (formerly known as Wuxi Qibang Construction Machinery Manufacturing Co., Ltd. which was established in 2015) , located in Wuxi City, covers an area of 25000 square meters. It is a leading construction machinery manufacturing company integrating R&D, production and sales of drilling rigs.
The company boasts a professional technical team focused on technological development and innovation. In 2022, it was recognized as a National High-Tech Enterprise. It operates specialized R&D centers including TRD Method Machine Engineering Technology Research Center and MJS Ultra-High Pressure Jet Grouting Rig Engineering Technology Research Center. As of November 2024, the company holds near 50 patents, with more under continuous development and application. In construction technology, the company has developed a real-time safety monitoring system and method for the MJS construction process.
The company is fully equipped with complete processes including sheet metal, metalworking, cutting, welding, CNC machining centers and assembly workshops, supported by advanced manufacturing and inspection facilities. With an experienced design team, a dynamic sales force, a highly skilled service team and a robust management system, Dunyu Heavy Industry delivers excellence across all operations. Its main products include: Jet Grouting Drilling Rig, Anchoring Drilling Rig, Multi-Functional Drilling Rig, MJS Method Drilling Rig, TRD Method Machine and Related Supporting Equipment. Leveraging deep expertise in engineering machinery, mature technology and premium services, Dunyu Heavy Industry has earned widespread acclaim from its customers.

FAQ

Q: Are you original manufacturer?

A: Yes, Dunyu is manufactured in jet grouting, multi-functional and anchoring drilling rig machinery in China for more than 10 years.
 
Q: What's your terms of payment?
A: T/T 30% as deposit in advance, and 70% before shipment. We'll show you the photos of the products and packages before you pay the balance.

Q: How is your delivery time? 
A: Normally it will take about 30-40 days about machine order.

Q: How to inspect the goods?
A: 1) Support customers to come to the factory for on-site inspection.
    2) Support customers to designate third-party companies to inspect goods.
    3) Support video inspection.

Q: How about your after-sales service?
A: Our dedicated after-sales team is available 24/7 to provide complimentary support, tailored to your needs with both online and offline service options.

Q:Can I have a visit to your factory before the order?
A: Sure, welcome, kindly contact us for address details and time schedule.

For more information, please don't hesitate to contact me at your convenience.