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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Lubes and the new materials: It's a different game

November 7, 2002

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Changes taking place in tube and pipe producing and fabricating may require you to review your lubrication strategies. One of these changes is the increased use of aluminum, aluminized steel, and stainless steel tubing.

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Tube cutting laser

Focusing on tube cutting lasers

November 7, 2002

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State-of-the-art laser technology for cutting metal tubes includes capabilities for cutoff, beveling, and cutting an infinite variety of shapes such as holes, slots, and notches. In this article, manufacturers of laser cutting equipment discuss the state of advancements such as automated loading and unloading of parts; simplified programming; automatedinspection of finished parts; and lights-out operation.

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Enclosed-arc weld heads

Assessing developments in orbital welding—Part 1

September 12, 2002

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The GTAW Process Editor's Note: This article is the first part of a two-part series about developments in orbital welding. Part I discusses power supplies, weld heads, and electrodes. Part II, which will appear in the October/November issue, will focus on hardware and accessories that improve...

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Lubricant comparison chart

Forming exhaust components with an alternative lubricant

September 12, 2002

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Switching from an oil-based lubricant to a water-based gel lubricant helped an exhaust-system components manufacturer, Zeuna Starker, reduce costs and cycle time. After studying several types of lubricants, the company chose a water-based gel that was less prone to spilling onto the floor and did not produce smoke during the welding process. The company reaped benefits in decreased housekeeping and disposal costs, and found that it did not need to wash the lubricant residue from semifinished parts before welding.

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EdgeCAM software screenshot

Automating for the future

August 29, 2002

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If you need to cut production time, you might glean a few tips from a little job shop in Ohio that has made the most of its software.

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Pipe image

Understanding coating adhesion

August 15, 2002

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Coatings for tube and pipe can serve as a primer for subsequent painting or they can provide corrosion protection.

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Say 'no!' to burrs, dimples

July 11, 2002

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As tube mill speeds increase, tube end cut quality suffers. Meanwhile, customer requirements for end cut quality continually increase. Tube producers are turning to dedimpling and deburring machines to enhance tube cut quality and improve worker safety.

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Postweld chart

Welding chromium-molybdenum steel pipe for power plants

July 11, 2002

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New power plants are in high demand and several hundred can be expected to be built over the next decade. Chromium-molybdenum steel pipe (P91) is a major construction material in these plants and there are particular methods for welding it properly to insure it will hold up. Preheat and postweld heat treatment are mandatory and absolutely critical to the service life of the alloy. Induction heating is a growing method for preheating and postweld heat treating.

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Expanding Their Reach

June 27, 2002

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Expandable-casing pipe is being used by some aggressive OCTG players, causing oil companies to look at deep water and land based wells in a whole new light.

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Cutting Costs

June 27, 2002

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This article describes different ways to contain tube and pipe welding fabrication costs, focusing on the option of using particular weld prep equipment. It outlines specific applications in thin-wall tube and pipe fabrication and installation and pipe with a heavier wall thickness.

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Achieving success with rotary draw bending

June 13, 2002

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This article discusses several aspects of rotary draw tube bending, including machine specifications; tooling and lubrication; tube material; and machine controls. It discusses advantages and disadvantages of single-level and multilevel machines; selecting lubricants and coatings to reduce tool wear; consistency of tube dimensions and the material's characteristics; and how machine controls are programmed or manually set by the operator.

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Using punching and forming plates

May 16, 2002

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This article discusses using punching and forming plates within a stamping press as an alternative to tube bending and end forming machinery.

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Bending square and rectangular tubing

May 16, 2002

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This article discusses some of the similarities and differences between bending round tube versus square and rectangular tube. Explores the characteristics of square and rectangular sections and the bending challenges associated with these characteristics.

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primer on titanium tube

A primer on titanium tube and pipe

May 16, 2002

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This article discusses titanium—how it is processed; the types and grades of pure titanium and alloys that are available; and applications for titanium tube and pipe. Discusses manufacturing and testing titanium tube and pipe to ASTM standards for specific applications.

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Getting a handle on robotic tube, pipe automation

April 15, 2002

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The requirements and parameters of automated handling of tubular products are worth a second look, especially if you want to do the job well.

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