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2. List of copper alloys - Wikipedia

   en.wikipedia.org/wiki/List_of_copper_alloys

   A brass is an alloy of copper with zinc. Brasses are usually yellow in colour. The zinc content can vary between few % to about 40%; as long as it is kept under 15%, it does not markedly decrease corrosion resistance of copper.

3. Concentric reducer - Wikipedia

   en.wikipedia.org/wiki/Concentric_reducer

   A copper concentric reducer. A concentric reducer is used to join pipe sections or tube sections on the same axis. [1] The concentric reducer is cone-shaped, and is used when there is a shift in diameter between pipes. [1] For example, when a 1" pipe transitions into a 3/4" pipe and the top or bottom of the pipe doesn't need to remain level. [2]

4. List of named alloys - Wikipedia

   en.wikipedia.org/wiki/List_of_named_alloys

   Hydronalium (up to 12% magnesium, 1% manganese): used in shipbuilding, resists seawater corrosion Italma (3.5% magnesium, 0.3% manganese): formerly used to make coinage of the Italian lira Magnalium (5-50% magnesium ): used in airplane bodies, ladders, pyrotechnics, etc.

5. British Standard Pipe - Wikipedia

   en.wikipedia.org/wiki/British_Standard_Pipe

   British Standard Pipe (BSP) is a set of technical standards for screw threads that has been adopted internationally for interconnecting and sealing pipes and fittings by mating an external thread with an internal (female) thread.

6. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   A typical lag screw can range in diameter from 4 to 20 mm or #10 to 1.25 in (4.83 to 31.75 mm), and lengths from 16 to 200 mm or 1 ⁄ 4 to 6 in (6.35 to 152.40 mm) or longer, with the coarse threads of a wood-screw or sheet-metal-screw threadform (but larger).

7. Willys MB - Wikipedia

   en.wikipedia.org/wiki/Willys_MB

   The Quartermaster Corps Technical Committee concurred, and in June 1939 requested the Chief of Staff's approval, to start standardizing truck chassis and bodies procured for the Army into five payload classes: 1 ⁄ 2 ‑ton, 1 1 ⁄ 2 ‑ton, 2 1 ⁄ 2 ‑ton, 4‑ton, and 7 1 ⁄ 2 ‑ton and all tactical trucks had to have (part-time) all ...