Tube and Pipe Production Articles


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Modern flying shear tube cutoff systems - Part I

April 11, 2006 | By John Pavelec

Modern flying shear tube cutoff systems comprise state-of-the-art mainframes, tools, and controllers. This article, Part I of a two-part series, discusses the different types of mainframes, their capabilities, and construction. It describes and includes images of the construction process from start to finish.

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The regrind process for tube mill tooling - Part I

April 11, 2006 | By Chris Miller

Although most tube and pipe producers don't get too involved in the regrind process, it is crucial—reconditioning roll tooling can extend its useful life by 15 or 20 times. The regrind process reduces the producer's overall out-of-pocket tooling expenses, while helping to ensure the tooling continues to produce a consistent-quality product at the required speeds. A better understanding of the process, especially familiarity with the types of flaws that reconditioning can and cannot resolve, can go a long way toward a better working relationship between a tube and pipe producer and its regrind contractor.

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Eliminating problems that cause flaws

April 11, 2006 | By W.B. "Bud" Graham

Problematic material? Yes, bad coil is out there. It could be mislabeled; the yield strength could vary from one part of the coil to another; it might have damaged edges; and so on. In the second part of this two-part series, columnist Bud Graham discusses steel coil, how its characteristics can vary, and how these variations can result in substandard tube.

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Happy New Year!

January 10, 2006 | By W.B. "Bud" Graham

How can we make 2006 better than 2005? One way is to adopt a few work-related new year's resolutions. The author lists five factors that hold the industry back--factors that everyone should resolve to overcome for a successful year.

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Cutoff die setup for dimple-free rounds

December 13, 2005 | By John J. Pavelec

With the right equipment and proper setup, tube mills can produce dimple-free round tubing efficiently. A multistep process using a two shear blade makes a dimple-free cut, and an inline brush end finisher can be used to remove the ever-present clearance burrs, if needed

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Relief ahead in 2006?

December 13, 2005 | By W.B. "Bud" Graham

An overview of the pressures faced by the tube and pipe producing industry in 2005 and the author's views on how 2006 will be similar, but with a greater emphasis on energy costs, conservation, and availability. Ends with a few reminders about tube mill maintenance and efficiency.

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Scarfing tube and pipe—cut to the quick

October 11, 2005 | By W.B. "Bud" Graham

Weld bead scarfing (cutting, removing, and disposing) exposes mill operators to numerous hazards, including cuts and burns from the scarf. Part I of this article discusses the reasons scarf is removed from tube and the mill parameters that affect the scarf removal process. Part II discusses a variety of manual and automated removal and disposal methods. Part III discusses strategies for improving ID weld bead removal and disposal.

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Tube mill cutoff die setup for square and rectangular profiles

September 13, 2005 | By John J. Pavelec

When properly selected and utilized, single-cut die sets can produce top-quality cut ends on square and rectangular tubing. This article discusses the criteria for selecting and using the die sets to achieve the best results.

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Tube and pipe loading

July 12, 2005 | By Bill Brady

This article discusses the hazards associated with manually loading and unloading tube and pipe. It describes one company's solution to making the process less hazardous.

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Innovative die setup and maintenance methods for tube mill cutoff

April 11, 2005 | By John Pavelec

Figure 1Tube Mill Cutoff - Left to Right - Single CutA comprehensive tooling plan that includes setting up and maintaining sufficient tools according to the original design manufacturer's (ODM) specifications is critical for efficient high-speed tube mill operation. The tube mill cutoff component...

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Tension control in tube and pipe production

April 11, 2005 | By Dr. Yunjiang Li, Harry Focht

On a tube or pipe mill, the incoming strip is formed by about 24 pairs of tool stands. To help ensure such a line runs smoothly, the strip must be pulled between every pair of stands. The parameter that indicates if or how much the strip is pulled is tension.Traditionally, tension is controlled by...

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Measuring wall thickness in seamless tube, cast-iron pipe

March 8, 2005 | By Marvin Klein

Controlling the wall thickness during the manufacture of seamless steel tubes and cast-iron pipe is critical in meeting specifications and minimizing scrap. Ultrasonic measurements typically are performed on tube or pipe at room temperature, many hours after forming is complete. At this...

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Certifying the quality of your tube and pipe

October 12, 2004 | By Sharon M. Bentzley

In a perfect world, quality assurance and certification of materials would not be issues. In the tube and pipe industry, however, flawless raw materials and finished goods are not givens.

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MIAB welding of thick-walled pipe ends

July 13, 2004 | By Dr. Vladimir Kachinskiy

Various methods are used for welding pipe, including electric shielded metal arc welding (SMAW), submerged arc welding (SAW), and flash end welding.Another efficient process is magnetically impelled arc butt (MIAB) welding. Current technology and equipment allow MIAB welding of pipes with wall...

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Optimizing your hydraulic cutoff press

June 8, 2004 | By Bob Jackson

It is accepted that, because tube production is a highly competitive industry, many tube producers stay up nights thinking of ways to increase output and improve quality with less labor. Three obvious strategies are to increase mill speed, minimize downtime, and eliminate secondary operations...

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