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2. Bar stock - Wikipedia

   en.wikipedia.org/wiki/Bar_stock

   Ground flat stock is annealed steel that has been ground to close tolerances (compare to drill rod). There are four types of materials available: O-1 tool steel, A-2 tool steel, A-6 tool steel, and 1018 steel (low-carbon or low-carb steel).

3. High-speed steel - Wikipedia

   en.wikipedia.org/wiki/High-speed_steel

   Wrought iron. High-speed steel (HSS or HS) is a subset of tool steels, commonly used as cutting tool material. It is superior to high- carbon steel tools in that it can withstand higher temperatures without losing its temper (hardness). This property allows HSS to cut faster than high carbon steel, hence the name high-speed steel.

4. High-speed rail - Wikipedia

   en.wikipedia.org/wiki/High-speed_rail

   High-speed rail (HSR) is a type of rail transport network utilizing trains that run significantly faster than those of traditional rail, using an integrated system of specialized rolling stock and dedicated tracks. While there is no single standard that applies worldwide, lines built to handle speeds above 250 km/h (155 mph) or upgraded lines ...

5. Tramway track - Wikipedia

   en.wikipedia.org/wiki/Tramway_track

   The traditional form of grooved rail is the girder guard section illustrated below. This rail is a modified form of flanged rail and requires a special mounting for weight transfer and gauge stabilisation. If the weight is carried by the roadway subsurface, steel ties are needed at regular intervals to maintain the gauge.

6. Rolling (metalworking) - Wikipedia

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

   Rolling (metalworking) 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. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of ...

7. British railway rolling stock - Wikipedia

   en.wikipedia.org/wiki/British_railway_rolling_stock

   Maximum speed Quantity (Coaches) Quantity (Driving trailer) Notes Coach Driving trailer mph km/h Caledonian Sleeper - Mark 5: 100 160 75 - [96] Chiltern Railways: Mark 3: 125 200 31 6 [97] DB Cargo UK: Mark 3: 125 200 3 1 [97] Great Western Railway - Mark 3: 125 200 63 - High Speed Train [88] - Mark 3: 110 177 18 - Night Riviera sleeper service ...