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  2. Black oxide - Wikipedia

    en.wikipedia.org/wiki/Black_oxide

    A standard black oxide is magnetite (Fe 3 O 4), which is more mechanically stable on the surface and provides better corrosion protection than red oxide Fe 2 O 3. Modern industrial approaches to forming black oxide include the hot and mid-temperature processes described below. Traditional methods are described in the article on bluing. They are ...

  3. What Your Front Door Color Means and Says About You

    www.aol.com/front-door-color-means-says...

    “A front door carries much more meaning than the official entrance of our home,” says Michelle Lewis, Color Psychology expert and author of Color Secrets. She explains that in various global ...

  4. Fire door - Wikipedia

    en.wikipedia.org/wiki/Fire_door

    Fire-resistance rated door, with wire mesh glass vision panel Industrial grade fire door rated to hydrocarbon curve and blast resistance Double fire door immediately after 3-hour fire test inside a 4-hour rated Durasteel wall Double fire door after 3-hour fire test in a 4-hour Durasteel wall, during successful 45PSI (3.1 bar) hose stream test leading to a UL Listing [1]

  5. Glass fiber reinforced concrete - Wikipedia

    en.wikipedia.org/wiki/Glass_fiber_reinforced...

    GRC (Glass fibre-reinforced concrete) ceramic consists of high-strength, alkali-resistant glass fibre embedded in a concrete & ceramic matrix. [1] In this form, both fibres and matrix retain their physical and chemical identities, while offering a synergistic combination of properties that cannot be achieved with either of the components acting alone.

  6. Fiber-reinforced composite - Wikipedia

    en.wikipedia.org/wiki/Fiber-reinforced_composite

    There are also applications in the market, which utilize only waste materials. Its most widespread use is in outdoor deck floors, but it is also used for railings, fences, landscaping timbers, cladding and siding, park benches, molding and trim, window and door frames, and indoor furniture.

  7. Fibre-reinforced plastic - Wikipedia

    en.wikipedia.org/wiki/Fibre-reinforced_plastic

    In June 2013, KONE elevator company announced Ultrarope for use as a replacement for steel cables in elevators. It seals the carbon fibres in high-friction polymer. Unlike steel cable, Ultrarope was designed for buildings that require up to 1,000 m (3,300 ft) of lift. Steel elevators top out at 500 m (1,600 ft).