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T38 Thread Symmetrix DTH Drilling System , Crown Drill Bits Casing 89mm

Good quality Button Drill Bits for sales
Good quality Button Drill Bits for sales
The top hammer series are available to Atlas and Sandivik,I have been their agent before,but their price is too high,the cooperation with Prodrill brings me new business and gives me more profit space,I believe in it and recommended Prodrill to you.

—— Switzerland

I am confidence the quality is similar to Robit and Rocksmith and with our designs having better carbide patterns and sizes I think we should do well.

—— Spain

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T38 Thread Symmetrix DTH Drilling System , Crown Drill Bits Casing 89mm

China T38 Thread Symmetrix DTH Drilling System , Crown Drill Bits Casing 89mm supplier
T38 Thread Symmetrix DTH Drilling System , Crown Drill Bits Casing 89mm supplier T38 Thread Symmetrix DTH Drilling System , Crown Drill Bits Casing 89mm supplier

Large Image :  T38 Thread Symmetrix DTH Drilling System , Crown Drill Bits Casing 89mm

Product Details:

Place of Origin: China
Brand Name: PRODRILL
Certification: ISO:9001,
Model Number: casing 89mm

Payment & Shipping Terms:

Minimum Order Quantity: 5 Pcs
Price: Negotiable
Packaging Details: Wooden box
Delivery Time: 10 to 15 days
Payment Terms: T/T, L/C, Western Union etc.
Supply Ability: 1000Pcs/Month
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Detailed Product Description
Thread: T38 Code No.: RoBit-SOD 89
Casing O.D.: 89mm Wall Thickness: 4-8 Mm
Ring Bit O.D.: 95-99mm Type: ATLAS-SOD 76/89

T38 thread Symmetrix system permanent casing 89mm for top hammer;Concentric Overburden Casing Drilling System



Symmetric/Centrex/Symmitrix Drilling System 
Symmetric is a concentric drilling system with retrievable pilot bits. 

Permanent Model 
The ring bit will be left in the hole after drilling finished. 

This system drills in any direction and in any type of ground condition. 

It is, in fact, the most flexible and efficient overburden system on the markettoday. 

The Symmetric components are made up of: 
---A pilot bits with large internal flushing holes and external flushinggrooves 
---Symmetrical ring bit (reamer) with internal bayonet coupling 
---Casing shoe for driving of casing. 
The Pilot bits is attached to any common DTH hammer shank. 

The Prodrill symmetric drilling system is designed to drill and case a hole simultaneously through unstabled ground conditions. The driver bit incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, and thus minimising the disruption of the surronding of the drill hole.


Full face head desigh for faster penetration and straighter hole 
Less torque is required 
Can drilll in vertical, horizotal or any direction 
Minimize disruption to the drilled hole 

Drilling speed is fast! High efficiency, low labor intensity!


Our main products are as below:

Construction & Mining & Rock Drill Tools:

A. DTH Hammer and Bit (2''-24''), Overburden Drilling System; RC System.

B. Top Hammer (drill hole dia.: 33 ~ 152mm).

1) Thread Tools (Button Bits, Rod, Coupling, Shank Adaptor): (R25/28/32/38, T38/45/51, ST58,GT60).

2) High Rang Soundless Cracking Agent (dia. 40 ~ 50mm).


Quarrying Drill Tools (drill hole dia.: 17 ~ 45mm).

1) Taper Drill Tools (Bit: button/chisel; Rod: Tapered/Integral), Carbide Tips, Segment, Grinding Wheel, Grinder.

3) Pneumatic Rock Drill: Hand-held (Y24, TY24C), Air leg (YT28) and Gasoline (YN27J).

4) Expansive Mortar (dia. 30 ~ 35mm); Hydraulic Rock Splitter PD40-250, Aluminum Cylinder.

5) Air Pushing Bag, Water Bag; Pneumatica Splitter G10, Hand Splitter, etc.

6) Hydraulic Breaker hammer, Paving breaker TPB40, 60, 90 for rock or concrete demolition.

7) PD28, PD45, PD90, PD115/HC20 Excavator mounted rock drilling.


Should you are interested in our products,pls contact us freely .

We do wish we can establish the good and long-term business relations and make us stronger and mutual benefit together.



Atlas Copco SOD Permanent/Top hammer
Symmetrix overburden drilling system
Order number Casing wall 
max. thickness
Ring bit Pilot bit Unit
Inner Outer Outer
ATLAS-SOD 76 8 41 88 58 mm
0.31 1.61 3.46 2.26 inch
ATLAS-SOD 89 8 54 100 70 mm
0.31 2.13 3.94 2.76 inch
RoBit Size Permanent/Top hammer 
Symmetrix overburden drilling system
Code No. Casing O.D. Wall thickness Ring bit I.D. Ring bit O.D. Polit bit O.D. Thread
mm inch mm inch mm inch mm inch mm inch
RoBit-SOD 89 89 3 1/2'' 4 0.157 71 2.795 99 3.898 80 3.15 T38
RoBit-SOD 76 76 3'' 8 0.315 47 1.85 90 3.543 59 2.323 T38
RoBit-SOD 89 89 3 1/2'' 8 0.315 50.8 2 94.9 3.736 70 2.756 T38
RoBit-SOD 101 101.6 4'' 10 0.394 65 2.559 110 4.331 79 3.11 T38
RoBit-SOD 114 114 4 1/2'' 10 0.394 73.5 2.894 120.3 4.736 92.5 3.642 T38
RoBit-SOD 140 140 5 1/2'' 10 0.394 94 3.701 145.7 5.736 117.5 4.626 T45
RoBit-SOD 168 168 6 5/8'' 10 0.394 127 5 182.3 7.177 147 5.787 T45


T38 Thread Symmetrix DTH Drilling System , Crown Drill Bits Casing 89mm



Contact Details
Xiamen Prodrill Equipment Co., Ltd

Contact Person: Prodrill

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