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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Welding zirconium and zirconium alloys Part III

January 10, 2005

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Editor's Note: This is the third installment of a three-part series on welding zirconium. Part I addresses metallurgy, weld preparation, and shielding techniques. Part II covers welding technique. Part III discusses additional methods of joining refractory metals.

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Welding zirconium and zirconium alloys

January 10, 2005

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Editor's Note: This is the first installment of a three-part series on welding zirconium. Part I addresses metallurgy, weld preparation, and shielding techniques. Part II, which will appear in the October/November issue, will cover welding technique. Part III, which will appear in the December issue, will discuss additional methods of joining refractory metals.

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Selecting a tube cutting process

November 9, 2004

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Tube fabricators use a variety of methods—sawing, lathe cutting, rotary cutting, supported shear cutting, dual-blade shear cutting, and laser cutting—to cut tubing from mill lengths into shorter pieces for use in final fabrication. No single method is optimal for cutting the broad range of tubular materials and tubular shapes produced by this industry.

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Welding zirconium and zirconium alloys Part I

October 12, 2004

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Editor's Note: This is the first installment of a three-part series on welding zirconium. Part I addresses metallurgy, weld preparation, and shielding techniques. Part II covers welding technique. Part III discusses additional methods of joining refractory metals.

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Thinking about an equipment upgrade?

September 14, 2004

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Products change, and so do manufacturing methods used to make products. In the tube and pipe industry, however, manufacturing changes have been few and infrequent over the past few decades.

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Lean times call for mean tactics—Part 1

September 14, 2004

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Ron Stange looks back on his 50 years in the tube-bending industry and provides his insight on the one thing tube bender operators must know to be successful: Ironclad rules for successful bending do not exist. Tube bender operators must start with guidelines and incorporate their own experience to be successful.

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Tips for welding preparation

August 10, 2004

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The increasing use of advanced equipment and applications (such as orbital welding for high-purity systems) requires better weld preparation. A thorough understanding of equipment, tool bits, and materials—including advanced alloys—helps to achieve better end prep.

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Bending and handling tube

July 13, 2004

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Three main types of tube bending equipment are dedicated, CNC, and automated bending cells. Understanding the advantages of each is crucial to deciding which type to purchase.

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Is your bend good enough?

July 13, 2004

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Bending tube or pipe so the finished product conforms to one of two bending standards can help to reduce rejects and improve relations between fabricators and their customers. The standards can facilitate the use of bending terms, and promote an understanding of bending tolerances and acceptable defects before starting a bending project.

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Flying high with orbital welding

March 11, 2004

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Orbital welding first was developed in the late 1960s by a group of engineers from McDonnell Douglas to join aerospace tubes. These engineers were aware of the problems associated with producing repeatable welds for their critical applications.

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Low-tech system mechanizes pipe welding: Backing device allows GMAW on open root

March 11, 2004

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Welding technology has changed dramatically over the last few decades. Although skilled welders always will be needed in manufacturing, mechanical welding devices can provide improvements over manual welding in terms of repeatability and throughput.

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Documenting welds from an orbital welding power supply

February 12, 2004

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Weld inspection, weld logging, and weld recordkeeping always have been a part of quality assurance (QA) procedures for certain industries, particularly aerospace, nuclear power, semiconductor, and pharmaceutical.

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Choosing the right robotic weld cell for your operation

January 29, 2004

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Your company's first robot may cause more trouble than expected. This doesn't mean that the robot will not work, but it is a piece of

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Troubleshooting compression bending

January 13, 2004

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You can achieve nearly trouble-free bending by being aware of the causes of typical compression bending problems and by correctly operating and maintaining the compression bender. Most compression bending problems are one of three types:Flattening or collapsing on the outside of the bend.Crimping...

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Structural tube on campus

January 13, 2004

Central Washington University in Ellensburg, Wash., is known for its strong science programs. "Flying Bridge," a structure designed by artist and sculptor Ed Carpenter, physically and metaphorically spans the biology and chemistry departments in the university's new Dean Science Building. Carpenter, who designed the bridge with engineering consultation from Peterson Structural Engineers Inc., teamed up with Albina Pipe Bending Co. Inc. to tackle the project's material bending and fabrication requirements.

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