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.
July 11, 2002
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.
June 27, 2002
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.
June 13, 2002
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.
May 16, 2002
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.
May 16, 2002
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.
April 15, 2002
End formed tubes are used increasingly in industries as diverse as automotive, furniture, appliance, sporting goods, construction equipment, and temporary buildings. With recent developments in new forming techniques to produce accurate, finished parts at high volumes without scrap, end formed parts are replacing some conventionally machined components.
April 15, 2002
This article describes the flash-butt welding process as used to weld pipes externally and internally. The authors describe the process, how it's used, how its technology is employed, advances in the process, materials that can be welded, and equipment used.
April 11, 2002
The two most common methods of applying zinc metal to steel handrail tubing are batch hot-dip galvanizing and inline, continuous galvanizing. The batch hot-dip method provides a coating thickness approximately 3 times that of the inline method, and a coating that lasts approximately 3 times as long. However, for indoor applications that do not require more than 500 PSI of bond strength, inline galvanized tube can be cost-effective.
March 14, 2002
Tube Specialties of Tempe, Ariz., wanted to get off the paper trail to streamline its production, accounting and inventory processes. This article looks at the reasons for the change, obstacles to the change and its benefits.
February 28, 2002
The pitfalls of building a beverage processing facility can be many. Poor welds involving tubing, fittings, and valves provide opportunities for bacteria to grow, creating health concerns and the potential for ruined product. Orbital welding -- which provides higher-quality, consistent welds compared to manual welding -- helps to reduce these concerns.