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.
May 14, 2015 | By Dr.-Ing. Volker Schauder
Eddy current and ultrasonic testing are suitable for tube and pipe mills and have been used for weld seam flaw detection for decades, but a new process, thermography, is an alternative. By measuring the heat signature of the weld seam as it cools, it provides information about weld integrity at and below the surface.
May 14, 2015 | By Mark Prasek
Roll formers that want to branch out to welded profiles need to know about the main welding processes – GTAW, laser, and induction. This article compares and contrasts each process so roll formers can determine which is best for particular applications.
April 23, 2015 | By Don Schwemmer
To meet demand from the petroleum industry, spiral pipe producers have turned to advanced automated systems to ramp up production
February 4, 2015 | By Peter Nawfel
Accurate and reliable length and speed measurements are critical parameters that help tube and pipe producers increase yield, improve quality, and reduce production costs. The relentless improvement in electronic technology, accompanied by falling prices, have made laser-based measurement systems more capable and affordable than ever before.
January 20, 2015 | By Michael Ferreri
Industry veteran Michael Ferreri provides an overview of the common methods of producing small-diameter stainless steel tubing for medical applications
December 16, 2014 | By Daniel Johns
Tube and pipe production is a capital-intensive process, but paying close attention to the efficiency of some of the lowest-cost items, specifically the consumables, can yield big benefits in productivity. At the cutoff, proper blade choice and optimizing the cutting depth are important first steps, but it’s also necessary to diagnose saw problems and—most important of all—develop a blade replacement strategy that minimizes mill downtime.
June 30, 2014 | By Eric Lundin
A niche tube producer that formerly used GTAW exclusively, Esta Rohr began changing over to laser welding in 2005. The change is now complete, with substantial changes. The company has reduced its number tube production lines from five to three, but its output has increased tremendously. Meanwhile, laser welding has allowed it to cut some costs, helping its products compete against others.
April 14, 2014 | By Eric Lundin
Freedman Seating Co., founded in the late 19th century, originally manufactured seat cushions for horse-drawn buggies. As gasoline engines displaced animal power, Freedman adapted and today uses the latest technologies, such as CNC tube benders and a laser cutting machine, to stay current with trends in transportation.
Like any mechanical system, a mill can run only as fast as its slowest component. Understanding the advantages and disadvantages of various cutoff systems is the first step in making sure the cutoff keeps up with the rest of the mill.
October 25, 2013 | By Pierre Huot
As demands for higher tensile steel increase, width consistency and edge quality are increasingly important because high-strength material does not form like soft grades of steel. Using a precise system for evaluating coil dimensions and edge quality is more important now than ever before.
October 24, 2013 | By Eric Lundin
Superior Tube Co. Inc., Collegeville, Pa., a fabricator that draws tubing for small-diameter applications, recently set about to improve material flow through its plant. Realizing that moving 60- and 70-year-old draw benches likely would damage the motors and motor controllers, which were the original equipment, the company developed a plan to upgrade the hardware at the same time. The result is a quantum leap in motor efficiency and monitoring capability.
September 6, 2013 | By Eric Lundin
For tube and pipe producers, testing the product on the mill is necessary, but not necessarily optimal. The line speed might be too slow, the mill might have some maintenance issues, and other factors can interfere with online testing. For these reasons, many supplement the online test with an offline test.
Tube and pipe producers have relied on GTAW and plasma for many decades, and CO2 lasers for more than a decade, but recently another choice has emerged: Fiber lasers. Relying on a solid fiber rather than a gas to generate the laser beam isn’t ideal for every material and wall thickness, but it will change the industry in a profound way.
April 19, 2013 | By Scott McLaughlin
The welding done in a tube or pipe mill ruins the galvanic or aluminum coating intended to keep the product corrosion-free, so remetallizing the weld seam is a common practice. Remetallizing creates a large amount of metal dust, which usually is considered a big nuisance and an expensive disposal headache, but in some cases it can be recycled for a profit.
March 7, 2013 | By Brian Kopack
The forge-welding process is one of the most efficient methods of making tube and pipe from 1/2 to 24 in. diameter, but it’s not limited to this range. An ERW mill’s capability can be expanded by adding a cold-stretch-reducing section, allowing it to make smaller diameters.