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  • Users: r6155
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  1. r6155

    Clamping Force on cylindrical object

    What's all this for? Pipe transportation doesn't require clamps.
  2. r6155

    Bolt Torque and Bolt preload query

    Joints assembled with strong, long bolts are MORE FLEXIBLE than those assembled with short bolts, and two-flange joints are more flexible than single-flange joints. A more flexible joint will withstand more abuse, such as differential thermal expansion loads. Stronger bolts also permit higher...
  3. r6155

    Bolt Torque and Bolt preload query

    I'll show you the way to learn how to assemble bolts. If you don't put in the effort to understand the basic principles, I can't do any more for you. You need to study further to understand it without help. I don't care what you think of me.
  4. r6155

    Forming of PV welded parts

    The jacketed vessel shall be tested before mounting the jackets.
  5. r6155

    Bolt Torque and Bolt preload query

    @ A8yssUK If you are a flange gasket expert, then why not read ASME PCC-1 2022?.The answer is here. You said: “Also, the bolting friction factor at 500°C is irrelevant, as you are torquing at room temp.” The lubricant is present at 500 C, did you consider that corrosion could occur?
  6. r6155

    Bolt Torque and Bolt preload query

    The problem is the lubricant for 500 C if torque is used.
  7. r6155

    Forming of PV welded parts

    ShelfLife of RTE Food in Relation to Lm AWS D18.1 and D18.3 welding in sanitary equipments
  8. r6155

    Typical cylindricity of shells made by plate rolling

    Roll the cylinder once the head is in the shop.
  9. r6155

    Bolt Torque and Bolt preload query

    Control of the bolt stress is possible by means inherent in the procedure especially if effective thread lubricants are employed, but in all cases the bolt stress can be regulated within reasonable tolerances by measuring the bolt elongation. You need to read more, over and over again. Or take...
  10. r6155

    Forming of PV welded parts

    This design is not hygienic. Sharp corners are not allowed.
  11. r6155

    Bolt Torque and Bolt preload query

    @XL83NL I already responded on Sunday at 7:32 PM. You're too comfortable and don't read ASME PCC-1. If you don't understand it, I can't do anything else.
  12. r6155

    about ASME Angle JOINT UW-3, UW-12 ?

    Visual Examination (NDE) is required.
  13. r6155

    Bolt Torque and Bolt preload query

    @ Trestala It's obvious you have no experience in manufacturing or inspection. .I'm sure you've never prepared an inspection plan or performed pressure tests, leak tests, or other tests. Hence, your comment is ridiculous. And......what is your help to the (OP)?
  14. r6155

    Acceptance limits for corrosion on threads during overhaul

    Be practical. Use new fasteners and avoid wasting time on inspections, reports, etc
  15. r6155

    Nondestructive Testing for Creep Detection

    Acoustic Emission Examination. See ASME V
  16. r6155

    Bolt Torque and Bolt preload query

    1) @Krausen I work in pressure vessel manufacturing. The testing is more demanding than at the plant. There is a procedure for checking bolt elongation on small flanges, without measuring all the bolts, only one of them is measured. Very easy. 2) All of you use the same torque value for a short...
  17. r6155

    Bolt Torque and Bolt preload query

    @ XL83NL Turn the nut to achieve the required stud elongation.
  18. r6155

    Bolt Torque and Bolt preload query

    @ XL83NL I assume that you don´t read ASME PCC-1 2022 For your example Flange NPS 2 Class 150the stud diameter is 5/8”. Care must be taken for small diameter of studs because the required stress can be exceeded during installing. ELONGATION I need only a Vernier caliper as a...
  19. r6155

    Bolt Torque and Bolt preload query

    Never torque, use elongation Example: Torque value is the same for stud 25mm diam x 75mm long or 400 mm. Ridiculous. For stud elongation the length is the input. Nobody mentions about this difference. Please take a look in ASME PCC-1

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