Welcome to the world of excellence at Changsha Tianhe Drilling Tools and Machinery Co., Ltd., where innovation meets precision in every tool we craft.
Product Description: Discover the Overburden Casing System - a marvel in drilling technology.
The overburden casing system from Changsha Tianhe Drilling Tools and Machinery Co., Ltd. revolutionizes drilling operations with its state-of-the-art technique. Ideal for water well drilling, anchoring, micro piling, and geothermal engineering, this system expertly installs casings or pipes through diverse layers of soil, rock, and materials. It provides unmatched stability and support throughout the drilling process, ensuring seamless and safe operations.
Key Features That Set Us Apart:
- Unmatched support and stability for your drilling operations, ensuring consistent performance.
- Versatile for use in water well drilling, anchoring, micro piling, and geothermal engineering, adapting to your unique project needs.
- Engineered for efficiency and reliability, delivering results you can count on.
- Designed for ease of installation and use, making your job simpler and more efficient.
Transformative Benefits:
- Boosts drilling efficiency, maximizing productivity and minimizing downtime.
- Prioritizes safety throughout drilling operations, giving you peace of mind.
- Mitigates the risk of collapse or instability, ensuring continuous and secure drilling progress.
- Adaptable to a wide range of drilling applications, offering flexibility and versatility.
- Experience the forefront of innovation and the pinnacle of quality with our overburden casing system, crafted to meet all your drilling demands.
Concentric Casing System with Ring Bits: Precision for Every Geological Challenge
Changsha Tianhe Drilling Tools and Machinery Co., Ltd. proudly presents the concentric casing system with ring bits, designed to conquer the toughest geological challenges, including pebble, fissure, dry stone, boulder, and construction backfield waste. This system facilitates drilling at various angles while achieving remarkable straightness, accommodating a maximum hole diameter of 1550 mm with unparalleled precision.

1.When drilling starts,the reamer opens | 2.When the drilling is finished,reverse the rotation to close the reamer | 3.Keep the casing tube left in the hole,or pull out and pour in grout sealing material | 4.Use conventional drilling bits to continue the drilling |





Products | Instruction |
1--Casing tube | a.Thread casing tube.;left-hand b.Welded casing tube |
2--Drill PIpe | Thread:API(REG/IF)/NC |
3--Stablizer | Thread of stabilizer consistent with drill rod |
4--Hammer | Thread:API REG |
5--Casing shoe | a.Thread casing tube.;left-hand b.Welded casing tube |
6--Eccentric system | See the data sheet as below |

Advanced Odex Casing System:
Our cutting-edge odex casing systems are intricately composed of three essential components: the guide device, the pilot bit, and the reamer, all masterfully assembled using our state-of-the-art locking system to ensure optimal performance.
The versatile guide devices are compatible with DHD, QL, SD, and Mission shanks, offering unmatched flexibility in your drilling operations.


Model | O.D of casing tube(mm) | I.D of Casing tube(mm) | Wall Thickness of the CasingTubemm | Max.O.D.of Guide Device(mm) | Match DTH hammer |
ODEX90 | 114 | 101 | 6.5 | 90 | COP34/DHD3.5 |
ODEX115 | 146 | 126 | 10 | 115 | COP44/DHD340/QLX40 |
ODEX140 | 168 | 148 | 10 | 136 | COP54/DHD350/QL50/SD5 |
ODEX165 | 194 | 174 | 10 | 160 | COP64/DHD360/QL60/SD6 |
ODEX190 | 219 | 199 | 10 | 185 | COP64/DHD360/QL60/SD |
ODEX240 | 273 | 253 | 10 | 240 | COP84/DHD380/QL80/SD8 |
ODEX280 | 325 | 300 | 12.5 | 280 | DHD112/DHD380/SD10 |
The Eccentric Casing System (ODEX) is designed for a multitude of drilling applications:
- Water Well Drilling Solutions: ODEX plays a pivotal role in water well drilling projects, expertly ensuring effective and efficient drilling while preventing any potential hole collapse, thus significantly saving on time and resources.
- Robust Anchoring Solutions: Specifically engineered to fulfill anchoring project demands, ODEX excels in slope reinforcement, delivering robust and reliable performance.
- Micro Piling Innovation: When drilling in soil, clay, and sand rock formations, ODEX offers a cost-effective and swift solution for hole protection through the use of both permanent and temporary casing tubes.
Concentric Casing System Featuring Blocks

1. Constructed from premium materials, our joint tools offer exceptional reliability and durability, especially after undergoing our rigorous heat treatment process.
2. Extend the service life of your tools with our heat-treated casing shoe, specifically engineered for longevity.
3. Experience superior performance with our strengthened blocks and locking kit, designed for outstanding overall effectiveness.
4. Perfectly suited for applications in pile foundation engineering and the demanding field of slope support engineering.
Concentric Casing System with Innovative Wings
Our advanced concentric casing system with wings is meticulously engineered to efficiently cover layers with loose materials such as soil, clay, weathered rock, and sand particles, ensuring stability and reliability.

Company Overview:
Company Name: Changsha Tianhe Drilling Tools and Machinery Co., Ltd.
Year of Establishment: 2002
Impressive Workshop Size: 60,000 Square Meters
Dedicated Staff: 350 skilled employees
Staggering Annual Production Capacity: 24,000 hammers, 120,000 precision-engineered bits, and 24,000 high-quality drill pipes
Industry-Leading Products: DTH Hammer and Bit, ODEX System, Reverse Circulation Hammer and Bit
Strategic Location: Hunan Province, China
Comprehensive Global Service Network: Reaching over 50 countries worldwide










Important Trading Instructions:
- Prompt Delivery Time: Typically 5-10 days for in-stock items; 15-20 days for items not in stock, ensuring timely fulfillment of your order.
- Sample Availability: We offer samples free of charge, with customers only responsible for the freight costs, allowing you to experience our quality firsthand.
- Payment Terms and Conditions: For transactions under $1000, full payment is required in advance. For orders exceeding $1000, a 30% T/T advance payment is required, with the balance due before shipment.
- For any additional questions or inquiries, please feel free to reach out. Our team is readily available to assist you with all your needs and ensure a seamless experience.