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  • Users: bk2
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  1. bk2

    Premium thread torque values

    Hello everyone, There are published torque values for premium threaded connections (Vam Top, etc). Are they different for different metallurgy (13 Cr, 25 Cr, etc) or are they purely based on material yield? I noticed that in VAMPTS website, there is a separate selection for L80 and L80 13 Cr...
  2. bk2

    Vibration spec for downhole equipments

    Hello All, Is there a generic vibration spec for Downhole / subsea components. Our company has one but it is based on past customer requests. I am wondering if the industry has anything as a standard. Thanks Development Engineer Oilfield Industry
  3. bk2

    Bonded seals alternatives

    Hello all, Anyone have suggestions on elastomers to use in place of bonded seals (elastomers such as Viton, Nitrile bonded to SS). I am looking for alternatives to reduce the cost substantially. The bonded seals I am using make up a huge chunk of the overall cost. Requirements for the elastomer...
  4. bk2

    Investment casting - ACME threads

    Hello everyone, I have heard that investment casting can be held to very close tolerances (+/- .005, sometimes tighter). If I have a STUB ACME thread called out in my part. Would they consider casting the thread form and later finish it out or do they cast the blanking dims and then machine...
  5. bk2

    Modelling stresses in concentric cylinders

    I am working on a burst calculation on a cylindrical pressure vessel. I have this cylindrical vessel placed concentrically inside another cylindrical vessel which is acting as a reinforcement to the inner part. (The diametral clearance between the two cylinders is .005" approx.) The thickness of...
  6. bk2

    Applying load over a specified distance

    Hello Cosmos users, Is it possible in Cosmos to apply a load / pressure over a part of the face. Lets say I have a 2 x 2 face on a square plate and I want to apply 1000 lb force over an area of 2 x 1 and not on the entire surface. Thanks for your response. -Ksbarry
  7. bk2

    Benefits of obtaining a PE license

    Hello all, I am a Mechanical engineer with 4 years of experience in design / FEA field. I also have a Masters degree in Mech. Engg. I am thinking about obtaining my PE license in the state of TX but I wanted to look for any inputs from experienced people as to what is the real advantage of...
  8. bk2

    Line pipe thread ratings

    Hello, I am looking to obtain information about pressure ratings of line pipe threads. Could someone guide me to a proper source. Would API-5L-04 spec be of any help to me? Thanks in advance for your suggestions. Regards -ksbarry

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