Tube and Pipe Production

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.

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Making seamless tubing with a floating mandrel mill

September 17, 2001

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Every six seconds, a single, 32-foot length of oil country tubular goods (OCTG) production tubing used in the exploration and production of oil and/or gas is produced. More than 20,000 miles of tubular product a year can be produced using the floating mandrel mill seamless tubular production...

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Boosting efficiency in solid state welders

September 4, 2001

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This article, reprinted from the January/February 1999 issue of TPJ-The Tube & Pipe Journal, is based on excerpts from Thermatool Corp.'s "High Frequency Pipe & Tube Welding Manual."

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Presenting coil to a tube mill

September 4, 2001

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Tubemakers looking to improve operations at the front of the mill should consider factors such as coil preparation before feeding it into the tube mill—end joining, removal of overthickness, burr up/down condition, and accumulation.

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Maintaining an RF tube and pipe welding generator

September 4, 2001

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This article separates the RF generator into seven major subassemblies and then gives tips for finding and preventing problems in each subassembly.

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Accumulating strip before the mill

September 4, 2001

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Figure 1:Strip can be stored in a deep pit, where it will hang in a loop.In simple terms, a strip processing line consists of a device to hold a supply coil of strip and a device to perform an operation to convert the flat coiled strip into a product.In tube mill operations, a supply coil is...

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Skiving strip edges for tube and pipe producing

September 4, 2001

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Edge treatment of coil strip before it enters a tube and pipe mill, called skiving, is a rapidly advancing technology. Improving the coil edge before it is welded helps increase the quality of the seam join and helps prevent rejected tube or pipe.

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Do your tubes seam good enough? Using eddy current testing to make sure

August 16, 2001

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Eddy current testing offers several features that makers of welded tube may find to their liking—in particular, high throughput speeds and sensitive flaw detection.

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Solving problems on the tube mill

August 16, 2001

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Tube mill operators face a variety of challenges every day in their efforts to produce high-quality tubing in a cost-effective and productive way.

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Inline gauge control in welded tube production: Reducing conversion losses

July 26, 2001

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Reducing scrap when converting strip to finished tube is a huge step in bettering your bottom line.

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Achieving faster, more efficient tube mill changeovers

July 26, 2001

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Tube mill changeovers involved more than just tooling. Fast changeovers require control over many variables (entry equipment, side pass stands, and so on). Above all, two factors are critical in fast, consistent setups: regular maintenance of the mill and tooling, and reliance on written procedures.

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Laser welding of stainless pressure tubes

July 12, 2001

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Not all laser welded tubes are created equal. Know what to look for in the final product to ensure that you're buying quality and not just an imposter.

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An evaluation of two cold pilger die designs

May 30, 2001

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A number of elements contribute to the success and failure of pilgering seamless tube. An analysis of the finished product and consideration of these processes can help a shop choose the right tooling for the process.

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Skelp edge preparation for manufacturing ERW pipe

May 30, 2001

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Preparing the edge of a metal strip properly before it enters an electric resistance welding tube mill makes a huge difference in the quality of the final product. Make sure your prep methods match your quality requirements.

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Exploring the welded tube making process: The basics for fabricators

May 30, 2001

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This article is aimed not at tube producers, but at fabricators of tubing, to provide an overview of the process.

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Automated tube welding of heat exchangers

April 24, 2001

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Harris Thermal Transfer Products, Newberg, Oregon, is an American Society of Mechanical Engineers (ASME)-code shop that focuses mainly on the production of shell and tube heat exchangers.

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