Fujian, China
Business Type:
Trading Company
Type of Ownership:
Limited Company
Terms of Payment:
LC, T/T, D/P, Western Union
Average Lead Time:
Peak season lead time: within 15 workday
Off season lead time: within 15 workday
International Commercial Terms(Incoterms):
OEM/ODM Service
Sample Available

Symmetrix Casing, Casing Drilling System, Overburden Drilling System manufacturer / supplier in China, offering Dia 114mm Symmetrix Overburden Casing Drilling System, Down The Hole Low/High Air Pressure DTH Hammer for Rock Water/Well Drilling, T38 Shank Adapter/Adaptor for Top Hammer Consumables and so on.

Gold Member Since 2014
Audited Supplier

Dia 114mm Symmetrix Overburden Casing Drilling System

Get Latest Price
Purchase Qty. / Reference FOB Price
1-9 Pieces US $600
10+ Pieces US $595
Production Capacity: 10000pec/Months
Transport Package: Wood Package
Payment Terms: L/C, T/T, Western Union
Brand: Prodrill
Color: Gold, Red
Hammer Type: 3inch, 4inch
Air Pressure: 20 Bar
Material: Alloy Steel
Inner Dia. of Casing Tube: 101 ~ 148mm

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Basic Info

Model NO.: Dia 114mm
Outer Dia. of Casing Tube: 114 ~ 168mm
Wall Thichness of Casing Tube: 6.5 ~ 10.5mm
Processing Type: Forging
Trademark: PRODRILL
Specification: SGS, CE, ISO9001
Origin: China
HS Code: 84314320

Product Description

- Straight Holes and Fast Penetration Rate.
- Less Torque in all ground conditions.
- Easy System to lock and Unlock Ring.
- Drilling at any angle required.
- More Holes and Low investment.

*** Description:

Concentric Casing System Ring Bit is the latest new and simple product line designed and manufactured by OCMA DrillTech for drilling through overburden with casing.

It can be used in all ground conditions and drilling applications as: Foundation construction, Piling construction, Water Well and Geothermal, Tunneling and Horizontal drilling.


Product Name:
Concentric casing system with ring bit & Concentric casing system (Permanent)
Design Principles Make the casing follow easy and the equipment and operation simple 
TypeConcentric casing system
ApplicationIt is recommended to drill in rock formation where contains some ovals and fractures.
CertificateISO9001   SONCAP 
Outstanding Advantages The stable and reliable working performance and the less vibration of drill rig and flexible to open and close.

Concentric Overburden Casing System

*** Advantages – Outstanding:
1. The stable and reliable working performance and the less vibration of drill rig.
2. Flexible to open and close.

*** Design Principles:
Make the casing follow easy and the equipment and operation simple
The stable and reliable working performance and the less virbration of drill rig.

*** Operation Procedure:
1. When the drilling starts, the blocks slides down through the grooves on pilot bit, and reams to drive the casing shoes and tubes into the hole.

2. When finished the drilling in overburden rock formations, raise the drilling tools and the blocks will get closed through the grooves, and the drilling tools can be pulled out from the hole.

3. Next construction can be followed.
Dear Sir or Madam: You can order
1) Wings (2pcs) + Locking System + Guide Device = Assembly
2) Or order separately.
3) If you need o. Dia. 178mm or above, we suggest to use our SLIDE BLOCKS model.

*** Application Range and Examples:
It is recommended to drill in rock formation where contains some ovals and fractures.

*** Warranty
The company is responsible for any problem caused by defaulty of material and maching.
The broken parts will be replaced at the sight of photos and product serial code.

*** Other Structures:
Concentric (or Symmetric or Symmetrix) Overburden Casing System: With ring bits, with wings and with slide blocks.

others, Concentric (or Symmetrix) Overburden Casing System with Blocks
Model: 1) Casing Shoe + pilot bit + 2 pcs Blocks; Or
2) Casing Shoe + pilot bit + 3 pcs Blocks; Or
3) Casing Shoe + pilot bit + 4 pcs Blocks.

Concentric (or Symmetric or Symmetrix) Overburden Casing System With Wings
Symmetric or Symmetrix Overburden Casing Drilling System With Wings
Symmetrix Overburden Casing Drilling System With Two Wings

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