The tube and pipe production technology area encompasses mills and all of the equipment that makes a mill run successfully: tooling, welding units, nondestructive testers, bundlers, scarfing equipment, straighteners, scrap choppers, and washing systems.
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.
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.
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
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.
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.
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.
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.
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...
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...
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...
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.
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...
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...
May 4, 2004 | By Robert White
Read Part I Editor's Note: This article, Part II of a two-part series on tube and pipe threading, explores troubleshooting related to threading cutting, insert shape, chip breaker geometry, coatings, and coolants. An examination of the cutting tools used on the finishing floor to...
May 4, 2004 | By Carl R. Loper Jr.
Stainless steels are inherently resistant to surface attack in mildly corrosive environments. However, when corrosion does occur, it can result in the formation of pits on the surface or within crevices of the part. Why does this situation develop, and what can be done to prevent catastrophic failure?