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Spiral welding is a process where a continuous full penetration metal inert gas weld overlay is used to rebuild damage from wear, erosion, corrosion or cracking, or to increase the dimensions of a component to match an increased dimension on a mating part.
In 2000, American opened American SpiralWeld Pipe Company in Columbia, South Carolina, diversifying its product line to include spiral-welded steel pipe in diameters up to 144 inches (3,700 mm). In 2015, American began operations at a new spiral-welded pipe production facility in Flint, Michigan. A third facility opened in Paris, Texas, in 2021.
Welspun Tubular LLC (USA): This spiral pipe and coating facility is spread across 740 acres and has an annual capacity of 350,000 tons near Little Rock Port, Arkansas. Welspun Tubular LLC begins production at its new electric-resistance welded (ERW) steel pipe mill in Little Rock, Ark., in 2012 according to a company executive. [33]
In the recent past, HSS was commonly available in mild steel, such as A500 grade B. Today, HSS is commonly available in mild steel, A500 grade C. Other steel grades available for HSS are A847 (weathering steel), A1065 (large sections up to 50 inch sq made with SAW process), and recently approved A1085 (higher strength, tighter tolerances than ...
The most common process pipe joint is the butt weld. The ends of pipe to be welded must have a certain weld preparation called an End Weld Prep (EWP) which is typically at an angle of 37.5 degrees to accommodate the filler weld metal. The most common pipe thread in North America is the National Pipe Thread (NPT) or the Dryseal (NPTF
The National Tube Works, operated by the National Tube Company, was a large steel tube foundry located in McKeesport, Pennsylvania. The tube works employed a large amount of the town and were a symbol of the town itself. Its closure in 1987 severely impacted the town's economy and contributed towards its decline.
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