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  • Users: newbeehere
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  1. newbeehere

    Re welding of welded joint of pipe

    Hello everyone, Hope you are all in good health. I want to ask the experts, How many (multiple) times re-welding of joints is allowed in ASME? (CS, Alloy and Stainless Steel) Thank you in advance for your answer. - John
  2. newbeehere

    PWHT and NDE

    Hello everyone, It is our debate with our coworkers that PWHT is another kinds of NDT (non destructive testing). As we know, PWHT will align microstructure of metal. Can we consider PWHT as NDT testing of pipe? Thank you
  3. newbeehere

    Piping Abbreviation

    Sir, would you help me interpret the drawing attached. the meaning of PF? Thank you.https://files.engineering.com/getfile.aspx?folder=de96eda8-77b9-4037-8b74-4a0e100e6bcf&file=PF.JPG
  4. newbeehere

    Equipment Concrete Pad

    Respected Sirs, I have search all the discussions, but unable to find the basic of foundation especially pad. I want to learn the steel pad to be used for concrete foundation for Equipment such as vessel, What standard to which i can see the pad distance between bolts? I already have in hand...
  5. newbeehere

    304 Stainless Steel Pipe System using 316 SS instead

    Sir/s: Our project has mistakenly using 316 Stainless Steel instead of 304 Stainless Steel (Drawing BOM 304 SS). Our client recommend to cut all joints and change to 304 SS Pipes. As we know that 316L has higher corrosion resistant than 304. What can we suggest to our client in terms of Code...
  6. newbeehere

    Pipe Weight by Surface Area

    Good Day Everyone, Could someone help me calculating the weight of pipe because the painting company is calculating the price through surface area of pipe and its weight and weight of the paint in microns. Example Given are: Pipe OD is 0.53 m2/Meter Pipe Thickness is 7.11 MM Pipe Weight 28.83...
  7. newbeehere

    Pipe crack after welding

    Good day everyone, May I ask about our pipe that after welding it cracks. -pipe is a106 GRB. -Size 2inches schedule 20 -distance between two welds is 150 MM -pre heating is 10 degree celcius -no pwht What could be the possible reason for this? This is the first time i saw like this. Our past...
  8. newbeehere

    Pipe Schedule

    Good day! I have a question regarding the Pipe thickness table on ASME B36.10. I receive a Pipe material today from our maincon. A pipe 30", thickness 19.05MM. But i did not see any writing of schedule number. when i look at the table of ASME B36.10, i saw that the thickness is there, but no...
  9. newbeehere

    Hardness Test Criteria after PWHT (A335 P11)

    Good day to all! Please help me regarding Hardness Test after PWHT. Our company has already done PWHT for material A335 P11 using the temperature of 730 DEGREES CELSIUS. As per ASME code B31.1 the temperature for this material is 650 to 700 Degrees Celsius only. So, we exceed the required...
  10. newbeehere

    PWHT

    Good day to all! We all know that the purpose of PWHT is to remove the residual stress caused by welding and also removal of hydrogen which may induced during welding. Can somebody explain to me these things: 1. What happen to metal structure when the temperature reaches to 750 degrees Celsius...
  11. newbeehere

    P91 Pre-Heat and PWHT Time Interval

    Sirs; During our inspection, the owner representative questions us: What is the interval time between your Pre-heating and PWHT. Pre-heating is carried out during welding, afterward the PWHT will be done. And, what closest ASME code could be supported for this article. Thank so much

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