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  2. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    M42 to M160x6 Hexagon Cap Screws Partially Threaded – Product grade B: Withdrawn: DIN EN ISO 4014: ISO 4014: DIN 933: M1,6 to M52 Hexagon Cap Screws Fully Threaded – Product grades 8.8: Withdrawn: DIN EN ISO 4017: ISO 4017: DIN 934: Hexagon nuts with metric coarse and fine pitch thread – Product classes A and B: Withdrawn: DIN EN ISO 4032 ...

  3. Endcap - Wikipedia

    en.wikipedia.org/wiki/Endcap

    In retail marketing, an endcap, end cap, Free Standing Display Unit (FSDU), or gen-end (general end shelving) is a display for a product placed at the end of an aisle. It is perceived to give a brand a competitive advantage . [ 1 ]

  4. List of screw and bolt types - Wikipedia

    en.wikipedia.org/wiki/List_of_screw_and_bolt_types

    A socket cap screw, also known as a socket head capscrew, socket screw, or Allen bolt, is a type of cap screw with a cylindrical head and hexagonal drive hole. The term socket head capscrew typically refers to a type of threaded fastener whose head diameter is nominally 1.5 times that of the screw shank ( major ) diameter, with a head height ...

  5. Head (vessel) - Wikipedia

    en.wikipedia.org/wiki/Head_(Vessel)

    The manufacturing of such an end is easier than that of a hemisphere. The starting material is first pressed to a radius r 1 and then curled at the edge creating the second radius r 2 . Vessel dished ends can also be welded together from smaller pieces.

  6. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    adapter spools (also called crossover spools), used on oilfields and pressure control, have different diameters, pressure ratings or designs at each end [11] adapters to convert NPT to BSP pipe threads are available [12] a fitting that connects threaded and non-threaded pipe [13] [14]

  7. List of abbreviations in oil and gas exploration and production

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    PBU – pressure build-up (applies to integrity testing on valves [citation needed]) PCA – production concession agreement; PCB – polychlorinated biphenyl; PCCC – pressure containing antiā€corrosion caps; PCCL – perforation casing collar locator log; PCDC – pressure-cased directional (geometry i.e. borehole survey) MWD tool

  8. Glossary of boiler terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_boiler_terms

    A non-return valve allowing atmospheric air into the boiler, if a cold boiler reduces its internal pressure on cooling down. This avoids the risk of damage to some types, if their pressure loads are reversed. Few boilers are fitted with these, although the feedwater clack valve usually has a similar effect. Vertical boiler Water-level Water-wall

  9. Wellhead - Wikipedia

    en.wikipedia.org/wiki/Wellhead

    In general well heads are five nominal ratings of wellheads: 2, 3, 5, 10 and 15 (×1000) psi working pressure. They have an operating temperature range of −50 to +250 degrees Fahrenheit. They are used in conjunction with ring type seal gaskets.