Product Name:
Casing System
Model NO:
90, 114, 140, 168, 219, 323, 254
Certification:
CE, ISO9001: 2000, API
Material:
Tungsten Carbide, High Manganese Steel
Application:
Well Drilling, Coal Mining, Quarry Drilling
Advantage:
High Performance
Capacity:
2000 Sets / Week
Overburden Casing System (Eccentric Casing System) is a premier solution for drilling water wells, geothermal wells, short micropiles, and medium-sized grouting holes for building and harbor projects.
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Economy: Eccentric systems are highly economical due to the ingenious reaming wing. The bit is fully retrievable and can be reused for subsequent holes.
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Working Principle: During drilling, the reamer bit rotates out to enlarge the hole, allowing the casing tube to slide down. Upon reaching the target depth, the drill pipe rotates in reverse, retracting the reamer bit so the entire system can pass back through the casing.
- Premium Materials: Utilizes high-grade tungsten carbide inserts for maximum durability.
- Precision Engineering: Bit bodies are manufactured from high-grade steel using state-of-the-art CNC machinery and advanced heat treatment processes.
| Model |
PA90 |
PA115 |
PA140 |
PA165 |
PA190 |
| Casing Tube (max/min O.D.) |
115 / 102 mm |
142 / 128 mm |
171 / 155.6 mm |
195 / 182.6 mm |
222 / 205 mm |
| Guide Sleeve Length |
174 mm |
174 mm |
205 mm |
225 mm |
250 mm |
| Drill Pipe Connection |
API2 3/8"Reg |
API2 3/8"Reg |
API2 3/8"Reg |
API3 1/2"Reg |
API3 1/2"Reg |
| DTH Hammer |
DHD35, MISSION30 |
DHD340, MISSION40 |
DHD55, MISSION50 |
DHD360, MISSION60 |
DHD360, MISSION60 |
| Reaming Diameter |
123 mm |
152 mm |
185 mm |
211 mm |
237 mm |
Different Shanks Configuration
Face Shapes Options
Button Shapes Design
Operational Workflow
System Components
Frequently Asked Questions
Q1: Can I request samples for quality testing?
A: Yes, samples are available. While they are paid, we can provide a discounted price for testing purposes.
Q2: What are your quality control procedures?
A: We implement a 100% strict inspection and testing protocol for every order before packing and shipment.
Q3: What kind of after-sales service is provided?
A: We offer free replacements for any issues caused by confirmed product quality defects.
Q4: What are the main applications for this casing system?
A: It is ideal for drilling water wells, geothermal applications, micropiling, and grouting projects in overburden layers.
Q5: Why is the eccentric system considered economical?
A: The reaming bit is fully retrievable, allowing the drilling system to be reused multiple times, significantly lowering the cost per hole.
Q6: What materials are used in the manufacturing?
A: We use high-grade tungsten carbide for inserts and premium alloy steel for bit bodies, processed through CNC and heat treatment.
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