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2. Vallourec - Wikipedia

   en.wikipedia.org/wiki/Vallourec

   During the 1920s and 1930s, many French industrial steel tube companies began to concentrate and specialize. In 1931, an industrial and commercial partnership was established between the factories in the cities of Valenciennes, Louvroil and Recquignies, forming a new company : Vallourec (using the first syllable of each city to create its name ...

3. Pipe (fluid conveyance) - Wikipedia

   en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

   Many industrial and government standards exist for the production of pipe and tubing. The term "tube" is also commonly applied to non-cylindrical sections, i.e., square or rectangular tubing. In general, "pipe" is the more common term in most of the world, whereas "tube" is more widely used in the United States.

4. Industrial furnace - Wikipedia

   en.wikipedia.org/wiki/Industrial_furnace

   The tubes, shown below, which are reddish brown from corrosion, are carbon steel tubes and run the height of the radiant section. The tubes are a distance away from the insulation so radiation can be reflected to the back of the tubes to maintain a uniform tube wall temperature. Tube guides at the top, middle and bottom hold the tubes in place.

5. Tube (fluid conveyance) - Wikipedia

   en.wikipedia.org/wiki/Tube_(fluid_conveyance)

   A tube, or tubing, is a long hollow cylinder used for moving fluids (liquids or gases) or to protect electrical or optical cables and wires. The terms " pipe " and "tube" are almost interchangeable, although minor distinctions exist — generally, a tube has tighter engineering requirements than a pipe.

6. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   10–19 – Y8A 8-pin steel tube base, aka "German metal octal" 20–29 – Loctal B8G; some octal; some 8-way side contact (exceptions are DAC21, DBC21, DCH21, DF21, DF22, DL21, DLL21, DM21 which have octal bases) 30–39 – International Octal (IEC 67-I-5a), also known as IO or K8A; 40–49 – Rimlok (Rimlock) B8A All-glass miniature tubes

7. Fine Tubes - Wikipedia

   en.wikipedia.org/wiki/Fine_Tubes

   Fine Tubes is a UK-based designer and manufacturer of stainless steel, nickel, zirconium, and titanium alloy tubes, based in Estover, Plymouth, Devon. [1] These highly specialized tubes are used in oil and gas power plants, nuclear power plants, airspace and aeronautics, large scale chemical-industrial manufacturing, medical practice (including implants), and high performance liquid ...