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  • Users: Burdy
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  1. Burdy

    PRESSURE RATING OF STD SCHEDULE PIPE

    Are there any standards or tables for the pressure rating of standard schedule piping. How do I rate a sched 10 st,stl pipe on a class 300 rated component, would it derate the component? Ansi B16.11 and B16.34 do not cover this.I could calculate but I am concerned I have missed something within...
  2. Burdy

    Temp/pressure testing HP Butt weld valves

    Thread 408-21669 attempts to answer some questions on basic testing on this subject, however I have a high pressure application together with low temp testing. I am looking for a supplier of what I believe to be a clamping method to retain the test flanges. Images I have seen for high pressure...
  3. Burdy

    Galvanic corrosion

    There appears to be a problem with Duplex Stainless Steel and Graphite corroding when in contact with sea water. As requests for products with this combination have statements that the graphite must have a barrier on the graphite to prevent contact with the water, I believe that this is to try...
  4. Burdy

    What are the limitations of bolts machined from stock bar?

    I am currently sourcing cap head screws and bolts by plain machining without any post treatment. The thread and head appear to have sharp trasitions when compared to that of a forged item.(high tensile 2.1) The problem is that materials such as Duplex,monel and inconel can be required...
  5. Burdy

    Shaft torsion at cryogenic temperatures of -196C

    I cannot find any recommendations for materials being used as shafts in cryogenic conditions. Shear modulus / modulus of rigidity always appear to missing from the majority of materials I do search on. Can anyone recommend any material with a shear modulus greater than 87 GPa (17-4PH)? There...
  6. Burdy

    Shaft torsion at cryogenic temperatures

    I cannot find any recommendations for materials being used as shafts in cryogenic conditions. Shear modulus / modulus of rigidity always appear to missing from the majority of materials I do search on. Can anyone recommend any material with a shear modulus greater than 87 GPa (17-4PH)? There...

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