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Horizontal Directional Drilling HDD Hole Openers Used to Enlarge Diameter Pr Drilled Hole

1 Pcs
Horizontal Directional Drilling HDD Hole Openers Used to Enlarge Diameter Pr Drilled Hole
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Drilling: Hdd Drilling Contractors
Item No: Horizontal Directional Drilling Jobs Hdd
Name: Pipeline Directional Drilling
Type: Directional Drilling Fluids
Directional: Horizontal Directional Drill
Companies: Hdd Drilling Companies
Rig: Horizontal Directional Drilling Rig
Origin: China Horizontal Directional Drilling Companies
High Light:

down hole drilling tools


oilfield fishing tools

Basic Infomation
Place of Origin: USA
Brand Name: ROSCHEN
Certification: ISO
Model Number: 3-38"
Payment & Shipping Terms
Packaging Details: Poly wood case
Supply Ability: 1000 pcs
Product Description

​Horizontal Directional Drilling HDD Hole Openers

Horizontal Directional Drilling HDD Hole Openers Used to Enlarge Diameter Pr Drilled Hole

Hole Openers

Hole Openers are used to enlarge the diameter of a pre-drilled hole. They are custom built to specification, and come in a wide variety of sizes. A Hole Opener is sometimes referred to as a Reamer.


We are proud of the quality and workmanship of our custom built Hole Openers. All Hole Openers can be quoted with new/unused surplus or used Steel Tooth or TCI Cutters, as well as Hammer Bit Hole Openers.





The Roschen DTU Underreamer has gone through several changes and modifications to adapt to the ever changing drilling applications and environments.


Features and Benefits:

1. Long proven history with over 2.5 million feet underreamed worldwide.
2. Expansion ratios 70% and larger than the OD of the body.
3. Hydraulically expandable with pump pressure.
4. Cutter arms move upward and out simultaneously in the body.
5. Reverse actuating mechanism maintains that tool is open while drill string weight prohibits tool closure.
6. Roller cone cutters are specifically designed for the ROSCHEN DTU underreamers and are consistent with down hole diameters.
7. Proprietary internal "cage" inside of roller cone cutters reduces wear and increases the life of the cutter.
8. Body machined from heat-treated steel bar, giving it exceptional strength.
9. Jet nozzles near the cutters allow for cutter washing and cooling.

10. Cutting Structures available include:

A. Sealed Bearing Mill Tooth
B. Sealed Bearing TCI
4. ROSCHEN's ADD Cutter


Smallest I.D. (in) Recommended Maximum Opening(in) Recommended Drilling Weight (pounds) Max Flow (GPM) Rotary Speed (RPM) Top Connection (Pin) Bottom Connection (Box)
3/4" 8 1/2" 0~7000 350 70~100 3 1/2" Reg 3 1/2" Reg
1" 9 7/8" 0~7000 500 70~110 4 1/2" Reg 4 1/2" Reg
1" 13 1/2" 0~12,000 500 70~110 4 1/2" Reg 4 1/2" Reg
1 1/2" 14 3/4" 0~15,000 900 70~100 4 1/2" Reg 4 1/2" Reg
1 1/2" 22" 0~15,000 1,000 70~100 7 5/8" Reg 6 5/8" Reg
2 1/4" 24" 0~20,000 1,400 70~100 7 5/8" Reg 7 5/8" Reg
2 1/4" 28" 0~20,000 1,400 70~100 7 5/8" Reg 7 5/8" Reg
2 1/4" 30" 0~25,000 1,400 60~110 7 5/8" Reg 7 5/8" Reg
2 1/4" 40" 0~25,000 1,400 50~110 7 5/8" Reg 7 5/8" Reg
2 1/4" 40" 0~30,000 1,400 40~110 7 5/8" Reg 7 5/8" Reg
2 1/4" 50" 0~30,000 1,400 40~80 7 5/8" Reg 7 5/8" Reg


ROSCHEN Cutting Structure Options
Sealed Bearing Mill Tooth
Sealed Bearing Interrupted Mill Tooth
Sealed Bearing Tungsten Carbide Insert
ADD Cutter (Carbide)

*Flow may be increased by using a jet sub or if applicable, jets in the top sub. 



Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.

Q: What are your main products, and used for?
A: Our products include core bit, PDC bit, reaming shell, core barrel, casing, drill rod, SPT equipment, Shelby sampler, drill rig and other drilling parts.
They are used for mineral exploration, geological drilling, geotechnical engineering and soil sampling.

Q: How about the delivery terms?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.

Q: How about discount?
A: Price is based on products and order quantity.

Q: Do you accept sample order?
A: Yes sure, please contact us for details.

Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.

Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products, Roschen always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004.


For more information please contact:




WeChat: +86-137 6419 5009 ; +86-135 8585 5390

WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390

Email: ;

Website: ; ;

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Contact Person : Bill, George, Michael
Tel : 13764195009
Fax : 86-021-54380177
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