Tube and Pipe Fabrication Articles

The tube and pipe fabrication technology area covers sawing (band, circular, and friction) and other cutting processes, such as abrasive, flame, laser, oxyfuel, plasma, and waterjet. It also discusses forming processes, including bending and end forming. Finally, it includes a handful of miscellaneous processes, such as trimming, beveling, finning, grooving, threading, and spinning.

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tube benders unannealed

No need for annealing

February 9, 2010

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Tube benders work with unannealed material and deliver better-performing products to customers.

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vertical compression benders

Making a workhorse run

February 9, 2010

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Vertical compression tube benders have been around for more than 50 years (see Figure 1). Historically associated with high-volume bending, these benders continue to play a role in production environments where parts have just one or two bends. Also known as press benders, they have stood the...

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Manufacturing motorcycle mufflers

Manufacturing motorcycle mufflers

September 15, 2009

Like all manufacturers, Woodsage Industries is always on the lookout for a better way to manufacture the many components it produces for OEMs. It recently devised a way to make one-piece external muffler shells for motorcycles and all-terrain vehicles.

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manufacturing motorcycle mufflers.jpg

Manufacturing motorcycle mufflers - Fabricator finds improvement with rotary swaging

September 1, 2009

Like all manufacturers, Woodsage Industries is always on the lookout for a better way to manufacture the many components it produces for OEMs. It recently devised a way to make one-piece external muffler shells for motorcycles and all-terrain vehicles.

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mandrel basics extractor application

Shaping profits with a mandrel extractor

September 1, 2009

Using a mandrel is helpful for maintaining a tubes profile when bending. Without a mandrel, bending forces tend to distort and flatten tubular workpieces.

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To think 'in tube'

August 1, 2009

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A tube laser spurs a shop to think about design and metal fabrication in a new way.

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bending nonround tubing.jpg

Bending nonround tubing

August 1, 2009

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While bending round tube and pipe involves many variables and challenges, the difficulties in bending nonround shapes are more numerous and complicated. Among the most common shapes are square, rectangular, and oval (elliptical and flat-sided). None react to the bending force in the same way that round shapes do, so understanding how the material reacts is the first step in learning about bending nonrounds.

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marman bead.jpg

Making a 20-degree Marman bead

July 20, 2009

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Two forming methods can make a bead for an airtight seal on a metal tube: rotary (spin) forming and progressive ram forming. Each has advantages and disadvantages in bead profile, cycle time, amount of wall thinning, and so on.

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photogrammetry measurements

Focusing on bent tubing

June 29, 2009

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Measuring the bends and straight sections of a bent tube can be tricky and time-consuming, especially if the tube has a large number of bends in several directions. Photogrammetry, also known as optical measurement, uses a booth equipped with several digital cameras to make a digital image of the part, allowing fast, easy measurements.

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orbital welding unit

Orbital welding technology breaks new ground

June 4, 2009

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Automated orbital welding technology has evolved to the point where one welding system can perform multiple processes and adapt welding parameters in real-time.

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teeing up orbital welding

Teeing up orbital welding

June 3, 2009

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Two technologies improve the quality and decrease the cost of fabricating high-purity systems, such as those used in the food and beverage, dairy, pharmaceutical, and semiconductor industries. These two techniques are mechanically formed T connections and orbital welding. A common question is this: Can orbital welding be used on mechanically formed T connections? The answer is yes, but fabricators need to understand the limitations and restrictions of this combination.

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cnc bender

Affordable automation

May 28, 2009

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Competition is tough and getting tougher. A critical strategy for staying in business is automation. Putting together a flexible, automated system with quick-change capability can help tube fabricators manufacture a variety of parts, both for existing projects and future programs. A few key pieces of equipment and a long-term view of current and future projects can help to justify the expense.

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bending tubular sections

Bending rolled steel sections

April 1, 2009

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Bending tube or pipe successfully is a matter of managing a handful of processes and variables and controlling the flow of the metal. The same principles apply to bending profiles, or rolled steel sections (RSS). However, because profiles aren't closed, they are more prone to distortion than tube or pipe. A close look at an RSS bending job provides a step-by-step approach for tackling this sort of project.

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Designing an OCTG finishing floor for welded pipe

April 1, 2009

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Although the energy market has seen ups and downs, overall the trend is a growth path. A manufacturer of welded structural and mechanical tube and pipe can get into this market by using its existing mill to manufacture oil country tubular goods (such as line pipe and casing) and adding a finishing floor to its operations. Understanding API requirements is the first step in planning a finishing floor layout.

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titanium energy demand

Titanium trends

March 9, 2009

Electricity demand grew an average of 15,000 megawatts per year from 1995 to 2006, and this trend will undoubtedly continue. The Energy Information Administration predicts that meeting future demands will require the equivalent of more than 20 new 500-MW power plants per year over the next 20 years or so. A critical component in power plant construction is titanium tubing, which is favored for its high strength and corrosion resistance.

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