Horizontal Directional Drilling (HDD) operations often require the use of swivels to enable efficient drilling and steering of the drill bit underground. Here are some common types of swivels used in HDD applications:

Rotary Swivel: This type of swivel allows the drill string to rotate independently from the drill rig, enabling the drill bit to turn while drilling. This helps in maintaining the direction of the drill and navigating underground obstacles.

Steering Swivel: Steering swivels are designed to provide smooth and controlled steering of the drill bit during HDD operations. They allow for precise adjustments to the direction of drilling without affecting the stability of the drill string.

Borehole Swivel: Borehole swivels are used to connect the drill pipe to the drill rig and allow for rotation of the drill string while maintaining pressure integrity in the borehole. These swivels are essential for preventing twist-offs and tool failures during drilling.

Pivot Swivel: Pivot swivels are used to allow the drill string to pivot at a specific point, enabling the drill bit to change direction smoothly and efficiently while maintaining stability. These swivels are crucial for steering the drill bit around obstacles underground.

Dual Swivel Assembly: Some HDD operations may require the use of a dual swivel assembly, which consists of two swivels working in conjunction to provide both rotational and steering capabilities. This setup allows for more precise control and maneuverability during drilling.

When selecting swivels for directional drilling HDD, it’s important to consider factors such as the size and type of drill string being used, the depth and terrain of the drilling project, as well as the specific requirements for steering and control. It’s also essential to ensure that the swivels are properly maintained and inspected regularly to ensure safe and efficient drilling operations.



1.ZLCONN Big HDD factory and workshop.
ZLCON factory more than 60Ksqm,other factories only 6-10Ksqm.ZLCONN uses WL610 steelAll others Q235. WL610 steel is much stronger, much stable than Q235 steel.

2.Self produced parts and full procedure quality control for ZLCONN machine
Many directional drills factories only have assembling workshop.
My factory produce most of the parts all by ourselves, from raw steel sheet dealing – steel sheet cutting – bending – making holes – application – welding- rust removal – electronicphoresis surface treatment – heat treatment – assembling – testing, all by ourselves,much stable,better quality control.

3.ZLCONN Oversea service,EU Standard and Good Price

4.Customized service support

About Horizontal directional drilling

HDD machines are primarily used for underground pipeline installation and maintenance. Their applications include, but are not limited to, the following:

  1. Oil and gas industry: Used for pipeline laying and maintenance in oil fields and natural gas extraction, including drilling in both horizontal and vertical directions.
  2. Utilities and infrastructure construction: Used for the installation and maintenance of city water supply, drainage, natural gas pipelines, as well as cable and communication lines.
  3. Environmental protection: Used for environmental projects such as groundwater monitoring, soil pollution remediation, and installation of environmental monitoring equipment.
  4. Road and railway construction: Used for laying pipelines in road and railway engineering to avoid disruption to traffic and the surrounding environment.
  5. Construction industry: Used for the installation of underground pipelines, cables, and communication lines at construction sites, as well as for ground reinforcement and underground structure construction.

Horizontal directional drilling machines have a wide range of applications, enabling precise drilling and pipeline installation in underground environments, reducing surface disruption and minimizing impact on the surrounding environment and infrastructure. The stable,powerful ,durable features will decide the speed,efficiency even the sucess of a project. Main parts on horizontal directional drilling machine will include :operating platform,Anchor device,Clamping device, Crawler-tread, Frame assembly, Engine, Diesel tank, Hydraulic system, Hood assembly, push-pull device, Bracket body, Power head assembly, Automatic change rod device, Mud pump assembly Electric system.

How to Choose the right horizontal directional drilling rig?

Regarding pipes or fiber optics in different project are different, for example fiber optics is very small they only need small HDD machine, therefore, for fiber optics normally 22t or 28t is used.

Cable is bigger, so commonly 28t, 35t are more used in cable.

Same for other project, the bigger the pipes are,  the bigger HDD machine are needed.

To learn how HDD machine looks like , how is it produced, how it is operated, how it is working, you can Subscribe our Youtube channel  https://www.youtube.com/@ZLCONNHDDMACHINE/videos

Every different projects need different model of HDD machine, if you don’t know how to choose, pls answer the following questions, our engineer will give you recommendation.

1) What is diameter of the pipe? How many pipe you will pulling at the same time?

2) What is the material of the pipe?

3) What is the max distance from the entrance to exit?

4)  What is the soil condition, hard or soft, clay or rock?

As a top HDD machine manufacturer in China.  it is absolutely right to choose ZLCONN!