Line Pipe vs. Pipeline – What’s the Difference?


When it comes to the oil and gas industry, there’s specific terminology that others might not understand. For example, what comes to mind when you hear the words “line pipe” or “pipeline”?

While they might seem similar and are used by many people interchangeably, they refer to different things. What’s the difference between line pipe and pipeline? It’s vital to understand the differences when purchasing top-notch products from Reddy Pipe & Supply, Inc.

What is the Pipeline?

The term pipeline refers to a line of pipe as a whole, which includes the pipes, pumps, valves, and control devices. These lines can be used for conveying liquids, gases, or finely divided solids. 

According to the American Petroleum Institute (API), two distinct pipeline types traverse the United States: liquid and natural gas pipelines.

What is Line Pipe?

When it comes to the term “line pipe,” it refers to high-strength carbon steel pipe used for transporting crude oil, petroleum products, natural gas, and water. These pipes are manufactured in various diameter sizes, ranging from 2 to 48 inches.

Two types of line pipe produced are:

  • Seamless line pipes
  • Welded line pipes

Seamless Line Pipe

Seamless line pipes are made from a cylindrical bar of steel. These bars are heated to very high temperatures that allow them to be pierced with a probe to create the necessary holes. It then gets put through rollers that will give it the proper wall thickness and diameter.

Welded Line Pipe

Welded line pipes are made from joining multiple steel plates and creating a cylindrical shape. Both ends are then joined together by the welding process. Since essential materials will pass through these pipes, they will undergo:

  1. An ultrasonic or radiological inspection and the seams.
  2. A pressure test at each joint.

Get Reddy to Pipe

Reddy Pipe & Supply, Inc has focused on excellent customer service to differentiate itself from others in this industry. Contact us today, and we will be glad to answer any of your piping questions.

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