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2. Process duct work - Wikipedia

   en.wikipedia.org/wiki/Process_Duct_Work

   The location of ring butt welds should preferably be offset 15 degrees(+/-)from point of maximum stress to minimize the effect of weld porosity on weld allowable stress. See US Steel Plate, volume II for empirical ring spacing, and wind bending stress: Spacing = Ls = 60 sqrt [Do (ft) * t plate (in) /wind pressure (psf)] Section = p * L (spacing ...

3. Artillery wheel - Wikipedia

   en.wikipedia.org/wiki/Artillery_wheel

   A similar design was used for a gun carriage for the US Army's 3.2-inch gun in 1881, with a wheel diameter of 57 inches (1,448 mm), based on testing of an Archibald Wheel Company design. By 1917, the 14-spoke wheel evolved to have 16 spokes, 0.5 inches (12.7 mm) high-carbon-steel tires, 2.875 inches (73.0 mm), felloes (8 sawed or 2 bent ...

4. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Partially-welded steel pipe joint. The welding of metals differs from soldering and brazing in that the joint is made without adding a lower-melting-point material (e.g. solder); instead, the pipe or tubing material is partially melted, and the fitting and piping are directly fused. This generally requires piping and fitting to be the same (or ...

5. Retaining ring - Wikipedia

   en.wikipedia.org/wiki/Retaining_ring

   These rings are manufactured by coiling flat wire into the shape of the finished retaining ring. Spiral rings are provided with a removal notch to simplify the removal process. Spiral retaining rings can be economically produced in special alloys like stainless steel because the manufacturing process eliminates scrap.

6. List of welding codes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_codes

   Welding. Basic welded joint details in steel. Pressurized components. EN 1708-2: Welding. Basic weld joint details in steel. Non-internal pressurized components. EN 1708-3: Welding. Basic weld joint details in steel. Clad, buttered and lined pressurized components. EN 1993-1-8: Eurocode 3: Design of steel structures – Part 1-8: General ...

7. Nominal Pipe Size - Wikipedia

   en.wikipedia.org/wiki/Nominal_Pipe_Size

   Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...