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  2. 30mm DS30M Mark 2 Automated Small Calibre Gun - Wikipedia

    en.wikipedia.org/wiki/30mm_DS30M_Mark_2...

    The 30mm DS30M Mark 2 is a ship-protection system made by MSI-Defence Systems consisting of a 30mm Mark 44 Bushmaster II cannon on an automated mount. It was designed to defend Royal Navy frigates from fast inshore attack craft armed with short-range missiles, rocket-propelled grenades , machine guns , or explosives.

  3. Grommet - Wikipedia

    en.wikipedia.org/wiki/Grommet

    A grommet is a ring or edge strip inserted into a hole through thin material, typically a sheet of textile fabric, sheet metal or composite of carbon fiber, wood or honeycomb. Grommets are generally flared or collared on each side to keep them in place, and are often made of metal, plastic, or rubber. They may be used to prevent tearing or ...

  4. Gryazev-Shipunov GSh-30-1 - Wikipedia

    en.wikipedia.org/wiki/Gryazev-Shipunov_GSh-30-1

    The Gryazev-Shipunov GSh-30-1 [1] (also known by the GRAU index designation 9A-4071K) is a 30 mm autocannon designed for use on Soviet and later Russian military aircraft, entering service in the early 1980s. Its current manufacturer is the Russian company JSC Izhmash. The name GSH-30-1 is formed from the surnames of the designers Gryazev ...

  5. Blanking and piercing - Wikipedia

    en.wikipedia.org/wiki/Blanking_and_piercing

    Blanking versus piercing. Blanking and piercing are shearing processes in which a punch and die are used to produce parts from coil or sheet stock. Blanking produces the outside features of the component, while piercing produces internal holes or shapes. The web is created after multiple components have been produced and is considered scrap ...

  6. Rubber pad forming - Wikipedia

    en.wikipedia.org/wiki/Rubber_pad_forming

    Rubber pad forming process, 1: bottom of the press. 2: lower die. 3: sheet metal. 4: rubber pad. 5: top of the press. Rubber pad forming (RPF) is a metalworking process where sheet metal is pressed between a die and a rubber block, made of polyurethane. Under pressure, the rubber and sheet metal are driven into the die and conform to its shape ...

  7. Tympanostomy tube - Wikipedia

    en.wikipedia.org/wiki/Tympanostomy_tube

    Grommet, T-tube, ear tube, pressure equalization tube, vent, PE tube, myringotomy tube [ edit on Wikidata ] Tympanostomy tube , also known as a grommet, myringotomy tube , or pressure equalizing tube , is a small tube inserted into the eardrum via a surgical procedure called myringotomy to keep the middle ear aerated for a prolonged period of ...