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  2. Descaling agent - Wikipedia

    en.wikipedia.org/wiki/Descaling_agent

    Limescale build-up inside a pipe reduces both liquid flow and thermal conduction from the pipe, so will reduce thermal efficiency when used as a heat exchanger.. A descaling agent or chemical descaler is a liquid chemical substance used to remove limescale from metal surfaces in contact with hot water, such as in boilers, water heaters, and kettles.

  3. Parts cleaning - Wikipedia

    en.wikipedia.org/wiki/Parts_cleaning

    Cleaning methods encompass solvent cleaning, hot alkaline detergent cleaning, electro-cleaning, and acid etch. In industrial settings, the water-break test is a common practice to assess machinery cleanliness. This test involves thoroughly rinsing and vertically holding the surface.

  4. Hydrostatic test - Wikipedia

    en.wikipedia.org/wiki/Hydrostatic_test

    The test involves filling the vessel or pipe system with a liquid, usually water, which may be dyed to aid in visual leak detection, and pressurization of the vessel to the specified test pressure. Pressure tightness can be tested by shutting off the supply valve and observing whether there is a pressure loss.

  5. Pipe cleaner - Wikipedia

    en.wikipedia.org/wiki/Pipe_cleaner

    A plain white pipe cleaner A model of a cat made from pipe cleaners A sculpture of a bird made from pipe cleaners. A pipe cleaner or chenille stem or furry wire is a type of brush originally intended for removing moisture and residue from smoking pipes [citation needed]. They can also be used for any application that calls for cleaning out ...

  6. Galvanic corrosion - Wikipedia

    en.wikipedia.org/wiki/Galvanic_corrosion

    Electrically insulate the two metals from each other. If they are not in electrical contact, no galvanic coupling will occur. This can be achieved by using non-conductive materials between metals of different electropotential. Piping can be isolated with a spool of pipe made of plastic materials, or made of metal material internally coated or ...

  7. Pickling (metal) - Wikipedia

    en.wikipedia.org/wiki/Pickling_(metal)

    Most copper alloys are pickled in dilute sulfuric acid, but brass is pickled in concentrated sulfuric and nitric acid mixed with sodium chloride and soot. [ 1 ] In jewelry making , pickling is used to remove the copper oxide layer that results from heating copper and sterling silver during soldering and annealing.

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