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Close up of SpiralWeld® Overlay Close up of SpiralWeld® Overlay. 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.
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 molten weld and the arc zone are protected from atmospheric contamination by being "submerged" under a blanket of granular fusible flux consisting of lime, silica, manganese oxide, calcium fluoride, and other compounds. When molten, the flux becomes conductive, and provides a current path between the electrode and the work.
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.
Partially-welded steel pipe joint The welding of metals differs from soldering and brazing in that the joint is made without adding a lower-melting-point material (e.g. solder); instead, the pipe or tubing material is partially melted, and the fitting and piping are directly fused.
A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology. HSS members can be circular, square, or rectangular sections, although other shapes such as elliptical are also available.
A Wisconsin man who faked his own drowning and left his wife and three children to go to Eastern Europe is in police custody, online records show.. Ryan Borgwardt, 45, was booked into the Green ...
Metal bellows are created by rolling annular corrugations into a smooth extruded or welded pipe. In 1946, Dreyer developed a multi-walled joint that was designed to accommodate axial movements as well: the axial expansion joint.