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  2. Standard dimension ratio - Wikipedia

    en.wikipedia.org/wiki/Standard_dimension_ratio

    Standard dimension ratio (SDR) is a method of rating a pipe's durability against pressure. The standard dimension ratio describes the correlation between the pipe dimension and the thickness of the pipe wall. [1] Common nominations are SDR11, SDR17, SDR26 and SDR35. Pipes with a lower SDR can withstand higher pressures.

  3. 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 ...

  4. List of rolling stock preserved on the South Devon Railway

    en.wikipedia.org/wiki/List_of_rolling_stock...

    To SDR Notes 51352 & 51376 Class 117: 2020 A class 117 Diesel multiple unit. Arrived at the railway in 2020. [35] [36] 55000 Class 122: 1958 1996 The first Class 122 (a single-car Motor Brake Second with driving cabs at each end) built by the Gloucester Railway Carriage and Wagon Company.

  5. South Devon Railway engine houses - Wikipedia

    en.wikipedia.org/wiki/South_Devon_Railway_engine...

    The pipe was laid in 10 feet (3.0 m) sections between the 7 ft (2,134 mm) broad gauge rails with a continuous slot along the top that was sealed by a leather valve. The buildings that housed the boilers and engines were built in a decorative Italianate style with square chimneys and spaced at around 3 miles (4.8 km) intervals.

  6. South Devon Railway Company - Wikipedia

    en.wikipedia.org/wiki/South_Devon_Railway_Company

    The atmospheric pipe was laid in the centre of the track. In cross-section it was not quite a complete circle, and a continuous slot was formed in the top to pass the bracket of the piston. On 21 October 1844 a specification for the atmospheric pipes was published: they were to be of 13 inches (330 mm) internal diameter, and

  7. Vitrified clay pipe - Wikipedia

    en.wikipedia.org/wiki/Vitrified_clay_pipe

    Vitrified clay pipe (VCP) is pipe made from a blend of clay and shale that has been subjected to high temperature to achieve vitrification, which results in a hard, inert ceramic. VCP is commonly used in gravity sewer collection mains because of its long life and resistance to almost all domestic and industrial sewage , particularly the ...

  8. 50 Divisions - Wikipedia

    en.wikipedia.org/wiki/50_Divisions

    "50 Divisions" is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the United States and Canada. [5] Standardizing the presentation of such information improves communication among all parties.

  9. List of welding codes - Wikipedia

    en.wikipedia.org/wiki/List_of_welding_codes

    Heating practices for pipe and tube AWS D10.11: Root pass welding for pipe AWS D10.12: Pipe welding (mild steel) AWS D10.13: Tube brazing (copper) AWS D10.18: Pipe welding (stainless steel) AWS D11.2: Welding (cast iron) AWS D14.1: Industrial mill crane welding AWS D14.3: Earthmoving & agricultural equipment welding AWS D14.4: Machinery joint ...