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  2. 12.7 × 108 mm - Wikipedia

    en.wikipedia.org/wiki/12.7_×_108_mm

    It was invented in 1934 to create a cartridge like the German 13.2mm TuF anti-tank rifle round and the American .50 Browning Machine Gun round (12.7×99mm NATO). It is used in the same roles as the NATO.50 BMG (12.7×99mm NATO) cartridge. The two differ in bullet shape and weight, and the casing of the 12.7 × 108 mm is slightly longer, and its ...

  3. Rebar - Wikipedia

    en.wikipedia.org/wiki/Rebar

    Rebars are quenched with water at a high level pressure so that the outer surface is hardened while the inner core remains soft. Rebars are ribbed so that the concrete can have a better grip. Coastal regions use galvanized rebars to prolong their life. BIS rebar sizes are 10, 12, 16, 20, 25, 28, 32, 36, 40 and 50 millimeters.

  4. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Round duct is made using a continuous spiral forming machine which can make round duct in nearly any diameter when using the right forming die and to any length to suit, but the most common stock sizes range evenly from 4" to 24" (10-60 cm) with 6"-12" (15-30 cm) being most commonly used. Stock pipe is usually sold in 10' (300 cm) joints.

  5. Raufoss Mk 211 - Wikipedia

    en.wikipedia.org/wiki/Raufoss_Mk_211

    The Raufoss Mk 211 is a .50 BMG (12.7×99mm NATO) multi-purpose anti-material high-explosive incendiary/armor-piercing ammunition projectile produced by Nammo under the model name NM140 MP. [1] It is commonly referred to as multipurpose or Raufoss , meaning red waterfall in Norwegian.

  6. Galvanization - Wikipedia

    en.wikipedia.org/wiki/Galvanization

    These plaques can flake off, leading to visible impurities in water and a slight metallic taste. The life expectancy of galvanized piping is about 40–50 years, [12] but it may vary on how well the pipes were built and installed. Pipe longevity also depends on the thickness of zinc in the original galvanizing, which ranges on a scale from G01 ...

  7. Hot-dip galvanization - Wikipedia

    en.wikipedia.org/wiki/Hot-dip_galvanization

    Galvanised hand rail Crystalline surface of a hot-dip galvanized handrail, known as "spangle" Protective effect: completely rusted letter box mounted to a hot-dip galvanized wall Steel strip coming out of the zinc pot of a continuous vertical hot-dip galvanizing line. Hot-dip galvanization is a form of galvanization.

  8. Galvannealed - Wikipedia

    en.wikipedia.org/wiki/Galvannealed

    Production of galvannealed sheet steel begins with hot dip galvanization of sheet steel. After passing through the galvanizing zinc bath the sheet steel passes through air knives to remove excess zinc, and is then heated in an annealing furnace for several seconds causing iron and zinc layers to diffuse into one another causing the formation of zinc-iron alloy layers at the surface.

  9. Military 12-gauge cartridges - Wikipedia

    en.wikipedia.org/wiki/Military_12-gauge_cartridges

    Initial production for the Vietnam War loaded 00 buckshot into the same red plastic cases being used for sporting ammunition and was designated: Shell, shotgun, plastic case, 12 gauge, No. 00 buck, XM162. The shells were typically packaged as twelve ten-round cardboard boxes within a metal ammunition box. [1]