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2. Directional boring - Wikipedia

   en.wikipedia.org/wiki/Directional_boring

   Directional boring, also referred to as horizontal directional drilling ( HDD ), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig. Directional boring offers significant ...

3. Natural gas pipeline system in the United States - Wikipedia

   en.wikipedia.org/wiki/Natural_gas_pipeline...

   The US natural gas pipeline system is a complex system of pipelines that carries natural gas nationwide and for import and export for use by millions of people daily for their consumer and commercial needs. Across the country, there are more than 210 pipeline systems that total more than 305,000 miles of interstate and intrastate pipelines. [ 1]

4. Submarine pipeline - Wikipedia

   en.wikipedia.org/wiki/Submarine_pipeline

   A submarine pipeline (also known as marine, subsea or offshore pipeline) is a pipeline that is laid on the seabed or below it inside a trench. [ 1][ 2] In some cases, the pipeline is mostly on-land but in places it crosses water expanses, such as small seas, straits and rivers. [ 3] Submarine pipelines are used primarily to carry oil or gas ...

5. Underground pneumatic boring - Wikipedia

   en.wikipedia.org/wiki/Underground_pneumatic_boring

   Underground pneumatic drills can be used in the installation of public utilities like power lines, gas lines, phone cables, and cable television. It can also be used to install residential lawn irrigation systems. Boring is especially useful when it is difficult or cost-prohibitive to plow or trench.

6. Underground storage tank - Wikipedia

   en.wikipedia.org/wiki/Underground_storage_tank

   A horizontal cylindrical steel tank with a factory-applied coating and galvanic anodes prior to installation underground. An underground storage tank ( UST) is, according to United States federal regulations, a storage tank, including any underground piping connected to the tank, that has at least 10 percent of its volume underground.

7. Steel casing pipe - Wikipedia

   en.wikipedia.org/wiki/Steel_casing_pipe

   Steel casing pipe. Steel casing pipe, also known as encasement pipe, is most commonly used in underground construction to protect utility lines of various types from getting damaged. Such damage might occur due to the elements of nature or human activity. Steel casing pipe is used in different types of horizontal underground boring, where the ...