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  2. ANSI/ASME Y14.1 - Wikipedia

    en.wikipedia.org/wiki/ANSI/ASME_Y14.1

    A size chart illustrating the ANSI sizes. In 1992, the American National Standards Institute adopted ANSI/ASME Y14.1 Decimal Inch Drawing Sheet Size and Format, [1] which defined a regular series of paper sizes based upon the de facto standard 8 + 1 ⁄ 2 in × 11 in "letter" size to which it assigned the designation "ANSI A".

  3. Copper tubing - Wikipedia

    en.wikipedia.org/wiki/Copper_tubing

    For example, DN20 is the size for copper pipe with an outside diameter of 19.05 mm or 3 ⁄ 4 inch. While pipe sizes in Australia are inch-based, they are classified by outside rather than inside diameter (e.g., a nominal 3 ⁄ 4 inch copper pipe in Australia has measured diameters of 0.750 inches outside and 0.638 inches inside, whereas a ...

  4. Tube (fluid conveyance) - Wikipedia

    en.wikipedia.org/wiki/Tube_(fluid_conveyance)

    For a tube of silicone rubber [2] with a tensile strength of 10 MPa and an 8 mm outside diameter and 2 mm thick walls. The maximum pressure may be calculated as follows: Outside diameter = 8 millimeters (0.3150 in) Wall thickness = 2 millimeters (0.07874 in) Tensile strength = 10 * 1000000

  5. Internally grooved copper tube - Wikipedia

    en.wikipedia.org/wiki/Internally_grooved_copper_tube

    Tube weight was reduced by 31% when copper tube diameters were downsized from 3/8 inch to 7 mm. Tube weight was reduced by 46% when copper tube diameters were downsized from 3/8 inch to 5 mm. The weights of the fin materials in the coils was 3.55 kg for the 9.52 mm coils, 2.61 kg for the 7 mm coils, and 1.55 kg for the 5 mm coils.

  6. Printing and writing paper - Wikipedia

    en.wikipedia.org/wiki/Printing_and_writing_paper

    ANSI Standard Paper Sizes ANSI Paper Size Width x Height (mm) Width x Height (in) Aspect Ratio Closest ISO Size A 216 x 279 8.5 x 11.0 1:1.2941 A4 B 279 x 432 11.0 x 17.0 1:1.5455 A3 C 432 x 559 17.0 x 22.0 1:1.2941 A2 D 559 x 864 22.0 x 34.0 1:1.5455 A1 E 864 x 1118 34.0 x 44.0 1:1.2941 A0

  7. Pipe marking - Wikipedia

    en.wikipedia.org/wiki/Pipe_marking

    Approximately every 25 feet (7.6 m) to 50 feet (15 m) on straight sections. A pipe passes through a wall or floor. ... Colour bands of 25 mm to 100 mm width are ...

  8. Cold water pitting of copper tube - Wikipedia

    en.wikipedia.org/wiki/Cold_water_pitting_of...

    The corrosion rate of copper in most potable waters is less than 2.5 μm/year, at this rate a 15 mm tube with a wall thickness of 0.7 mm would last for about 280 years. [2] In some soft waters the general corrosion rate may increase to 12.5 μm/year, but even at this rate it would take over 50 years to perforate the same tube.

  9. Compression fitting - Wikipedia

    en.wikipedia.org/wiki/Compression_fitting

    A compression fitting 15 mm isolating valve. A compression fitting is a fitting used in plumbing and electrical conduit systems to join two tubes or thin-walled pipes together. . In instances where two pipes made of dissimilar materials are to be joined (most commonly PVC and copper), the fittings will be made of one or more compatible materials appropriate for the connect