500mm HDD Rock Reamer 6 1/2 Inch Hole Opener Drilling

Basic Information
Place of Origin: HeBei China
Brand Name: Pangolin
Price: Negotiation
Delivery Time: 5-15 work day
Payment Terms: T/T
Detail Information
Use: Well Drilling Weight: 200kg-400kg
Applicable Industries: Construction Works , Energy & Mining Machine Type: Drilling Equipment
Usage: Hole Drilling Color: Customer's Requirement
High Light:

500mm HDD Rock Reame


500mm Hole Opener Drilling


HDD Rock Reamer 6 1/2 Inch

Product Description

500mm Reamer Bit HDD Hole Opener For Hard Rock Drilling



HDD Hole Opener Reamer Bit Hole - Opener For Hard Rock Drilling




The reaming bit is mainly composed of more than 3 cones. The cutting structure adopts high-quality tungsten carbide cemented carbide inserts for surfacing welding, which adopts new technology and new formula, and improves the wear resistance of the reamer.

1. Main size: general drill diameter: 311mm, 346mm, 500mm, 800mm, 900mm, etc., various sizes can be customized

2. Purpose: In the construction site and bridge construction, the hole opener can expand the small well hole to large diameter. Highway construction, railway construction, etc. The drill bit is suitable for different complex formations, shale, limestone, pebbles, etc.

3. Cutting structure: The hole opener always has multiple cones. The drill bit cone is separated from the tri-cone drill bit and welded to form a large-diameter drill bit, and the pilot device is connected with the hole opener.




1) Drill Bit Connection made according to API standard.
2) We can adjust the bit size according to your rig.
3) The best result can be obtained by using the steel-tooth bit in the soft stratum.



Product parameters


Product name HDD hole opener
Usage horizontal directional drilling
Application formation medium hard with relatively higher compressive strength and hard stringers, such as hard shale, sandstone and limestone, etc.
Weight 200kg-400kg



Reamer Size

Cone size and # of Cones Threads
Cone size #of Cones Cone size # of Cones
10“ 6 1/2” 3     NC23 NC26(2 3/8IF) D50 D80 NC31(2 7/8IF) NC38(3 1/2IF)
12“ 8 1/2” 3    





8 1/2”or 9 1/2”


For 8 1/2”-9 1/2” Cone:

NC23 NC26(2 3/8”IF) D50 D80 NC31(2 7/8”IF) NC38(3 1/2”IF)


For 12 1/4”-13 5/8” Cone:

4”IF 4 1/2IF 5 1/2FH 6 5/8FH

18”-20“ 5 12 1/4” 4
22”-24“ 6



12 1/4” or 13 5/8”

28”-30” 7 6
32”-34” 8 7
36“-38” 9 8
40“-42” 10 9
44“-46” 11 10
48”-50” 12-13 11




Used in

Apply to Construction, Water Drilling, Mining, Horizontal Directional Drilling, Geothermal and Environ-mental.




1. Gauge Structure
With active cutting gauge protection inserts on bit body, the bit has good gauge protection and up drill capability.
2. Bearing Structure
High precision journal bearing. Balls lock the cone.Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy. Abrasion resistance and seizure resistance of the bearing are improved. Compared with three cone bit, the leg bearing is bigger, so it can receive higher WOB and high reliability.
3. Hydraulic Design
Small angled watercourse design increased the shirttail thickness and can effectively prevent the watercourse erosion.Optirnized hydraulics structure improves the clearing capability and increases ROP.
4. Product Application
It is suitable for sidetracking, deep well drilling and old well



Pic Show


500mm HDD Rock Reamer 6 1/2 Inch Hole Opener Drilling 0


Drill bit hole opener HDD drilling reamer positioning drilling tool 1


Pangolin (China) Construction Machinery Co., Ltd. is a drill manufacturer with complete testing equipment and strong technical force. Our products have a wide range, high quality, reasonable price, and timely delivery, which are widely used in oilfields, drilling, non-excavation fields and other industries. Our products are widely recognized and trusted by users, and can meet the ever-changing economic and social needs. To
We welcome new and old customers from all walks of life to contact us for future business relations and mutual success!


Drill bit hole opener HDD drilling reamer positioning drilling tool 2




Q: How to order the products?
A: Order directly!


Q: How to control the quality?
A: We should be checking & testing everyone drill bit before shipment.


Q: Do you agree sample order?
A: Yes, we are welcome your sample order to testing our quality.


Q: Can we select the color of the drill bit?
A: Yes, we have the color of bule, golden, silvery for your choose. If you need, we can make the drill bit color based on yours.


Q: Do you have after-sale service and warranty service?
A: Any quality or quantity problem once confirmed, we will be compensate you the same. Any question or problem we will be reply you within 24 hours.

Contact Details
Sophie Zhang

Phone Number : +86-13231687581

WhatsApp : +8613231687581