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  2. List of 3D-printed weapons and parts - Wikipedia

    en.wikipedia.org/wiki/List_of_3D-printed_weapons...

    Steel rods, tubing, AR-15 FCG, fasteners 37mm ammunition The Harlot [33] 2022, February Primarily printed firearm: Pistol Single-shot FDM BAD-CAD / Black Lotus Coalition .22 caliber barrel liner, spring, fasteners .22 LR: A mostly printed .22 LR pistol. Uses a DIY metal barrel, firing pin, and spring. Simple and extremely cheap, designed to ...

  3. Swivel - Wikipedia

    en.wikipedia.org/wiki/Swivel

    The chromium in stainless steel creates a passivation layer on the surface that protects the steel from rusting. In low oxygen situations and/or warm water this passivation layer breaks down and corrosion will set in. Low oxygen will occur in crevasses which stary wet (cracks, welds, shackle threads, keel bolts, etc.) or confined spaces (swivel ...

  4. Pipe support - Wikipedia

    en.wikipedia.org/wiki/Pipe_support

    A pipe support or pipe hanger is a designed element that transfer the load from a pipe to the supporting structures. The load includes the weight of the pipe proper, the content that the pipe carries, all the pipe fittings attached to pipe, and the pipe covering such as insulation. The four main functions of a pipe support are to anchor, guide ...

  5. Hollow structural section - Wikipedia

    en.wikipedia.org/wiki/Hollow_structural_section

    In the recent past, HSS was commonly available in mild steel, such as A500 grade B. Today, HSS is commonly available in mild steel, A500 grade C. Other steel grades available for HSS are A847 (weathering steel), A1065 (large sections up to 50 inch sq made with SAW process), and recently approved A1085 (higher strength, tighter tolerances than ...

  6. Structural steel - Wikipedia

    en.wikipedia.org/wiki/Structural_steel

    For steel structures the main harmonized standards are: Steel sections and plate – EN 10025-1; Hollow sections – EN 10219-1 and EN 10210-1; Pre-loadable bolts – EN 14399-1; Non-preloadable bolts – EN 15048-1; Fabricated steel – EN 1090 −1; The standard that covers CE Marking of structural steelwork is EN 1090-1. The standard has ...

  7. ASTM A500 - Wikipedia

    en.wikipedia.org/wiki/ASTM_A500

    ASTM A500 is a standard specification published by the ASTM for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. It is commonly specified in the US for hollow structural sections, but the more stringent CSA G40.21 is preferred in Canada.