12 1/2 rotary drilling pilot tricone bit for hole opener 36 inch

Directional boring, commonly called horizontal directional drilling or HDD, is a steerable trenchless method of installing underground pipes, conduits and cables in a shallow arc along a prescribed bore path by using a surface-launched drilling rig, with minimal impact on the surrounding area. Directional boring is used when trenching or excavating is not practical. It is suitable for a variety of soil conditions and jobs including road, landscape and river crossings. Installation lengths up to 2000 m have been completed, and diameters up to 1200 mm have been installed in shorter runs. Pipes can be made of materials such as PVC, polyethylene, polypropylene, Ductile iron, and steel if the pipes can be pulled through the drilled hole. Directional boring is not practical if there are voids in the rock or incomplete layers of rock. The best material is solid rock or sedimentary material. Soils with cobble stone are not recommended. There are different types of heads used in the pilot-hole process, and they depend on the geological material.

When ordering please specify:

Tool OD;

Tool connection.

Drill stem tools,Coring tools ,Fishing tools,Jars tools,Cementing tools,Milling tools,Accessory tools,,Workover tools.....

The Fixed Diameter Hole Opener is made of tough heat treated alloy steel for maximum strength. Cutter arms, equipped with removable cutter, are hardfaced and welded on body. Cutters are available in three types: type SM for soft to medium formation, type MH for medium to hard formation and type XH for hard formation. The hole openers have three or six jet tubes with replaceable nozzles, so that jet streams quickly clean the enlarged hole.

On inquiries and orders please specify.

Hole size

•Pilot hole size
•Top and bottom connections
•Fishing neck and bottom neck length and OD.
•Types of cutters (SM, MH, XH)

Pre-Sales Service                         After-Sales Service

* Transaction Level Five Stars           * Supplier Service Service Five Stars
* Response Rate 86.5%                      * On-time Shipment Five Stars
* Response Time<12h                         * Product Quality Five Stars                       

Packaging                         

Packaging Details:Bundling and container packaging, we will put moisture-proof and rust-proof materials in the container to resist the harsh environment during transportation.

Q1,Could you do OEM Service?
A: Some items accept this service, pls contact us for details.

Q2: What's your Delivery Time?
A: In generally , the delivery time is about 3-7 days for sample order. We will make the delivery asap with the guaranteed quality.

Q3:What's the convenient way to pay?
A: Trade Assurance, L/C,T/T,Western Union and Escrow are accepted , and if you have a better idea, please feel free to share with us.

Q4:Which mode of transport would be better?
A: In general , we advice to make delivery by sea for large order, and for small order,Courier,By Air both ok,Also we respect your views of other transportation as well.

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