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 cutoff machine

Doing more with less

April 29, 2010 | By George Winton

Loading and unloading tube for fabricating often is a manual process. Because labor rates in the U.S. are higher than those in many other countries, manual loading and unloading isn’t competitive. Using an automatic loader/unloader can change that, moving an operation from red to black.

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standard tooling

Selecting the right mandrel and wiper

April 1, 2010 | By William Q. Tingley III

Tube bender operators could rely on complex mathematical formulas and rules of thumb, but it’s much quicker to use a tooling chart. This sort of chart lists the two main bending criteria, D of bend and wall factor, on the X and Y axis, respectively. However, these charts have just two axes, and usually are based on bending mild steel to 180 degrees. Tube bending comprises many more variables, materials, and bend angles. Knowing how to make adjustments to compensate for additional factors is critical for successful bending.

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vertical compression benders

Making a workhorse run

February 9, 2010 | By George Winton

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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tube benders unannealed

No need for annealing

February 9, 2010 | By AIDA - America

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

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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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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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manufacturing motorcycle mufflers.jpg

Manufacturing motorcycle mufflers

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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bending nonround tubing.jpg

Bending nonround tubing

August 1, 2009 | By Bob Want

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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To think 'in tube'

August 1, 2009 | By Tim Heston

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

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marman bead.jpg

Making a 20-degree Marman bead

July 20, 2009 | By John Schwochert

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 | By William Mongon

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 | By Bill Atkinson

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 | By John Hodges

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 | By Mike Bollheimer

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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Designing an OCTG finishing floor for welded pipe

April 1, 2009 | By Chad Rhodes

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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