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2. Track gauge conversion - Wikipedia

   en.wikipedia.org/wiki/Track_gauge_conversion

   Track gauge conversion is the changing of one railway track gauge (the distance between the running rails) to another. In general, requirements depend on whether the conversion is from a wider gauge to a narrower gauge or vice versa, on how the rail vehicles can be modified to accommodate a track gauge conversion, and on whether the gauge conversion is manual or automated.

3. Track gauge in the United States - Wikipedia

   en.wikipedia.org/wiki/Track_gauge_in_the_United...

   Some railways, primarily in the northeast, used standard gauge of 4 ft 8 + 1 ⁄ 2 in (1,435 mm); others used gauges ranging from 2 ft (610 mm) to 6 ft (1,829 mm). As a general rule, southern railroads were built to one or another broad gauge, mostly 5 ft ( 1,524 mm ), while northern railroads that were not standard-gauge tended to be narrow-gauge.

4. Roll forming - Wikipedia

   en.wikipedia.org/wiki/Roll_forming

   It typically begins with a large coil of sheet metal, between 1 inch (2.5 cm) and 20 inches (51 cm) in width, and 0.004 inches (0.10 mm) and 0.125 inches (3.2 mm) thick, supported on an uncoiler. The strip is fed through an entry guide to properly align the material as it passes through the rolls of the mill, each set of rolls forming a bend ...

5. Rolling (metalworking) - Wikipedia

   en.wikipedia.org/wiki/Rolling_(metalworking)

   Rolling schematic view Rolling visualization. In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property.

6. This storage island that's like adding extra countertops to ...

   www.aol.com/lifestyle/kitchen-island-walmart...

   This rolling storage island is like adding three extra shelves to your kitchen. $76 at Walmart We first wrote about this rolling cart several months ago, when we spotted it on sale for $100.

7. List of gauge conversions - Wikipedia

   en.wikipedia.org/wiki/List_of_gauge_conversions

   While China and Europe are connected by rail, and while both are mainly 1,435 mm (4 ft 8 + 1 ⁄ 2 in), the intervening Central Asia Railways are 1,520 mm (4 ft 11 + 27 ⁄ 32 in) gauge. There are discussions about facilitating an eventual linkage of the Chinese and European standard gauge system.