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  1. OwaisGillani

    API 5L question

    hi Is it possible in any way for the buyer to specify line pipe dimensions with constant ID and different OD? e.g. pipe of ND 18-inch but with constant ID of 425.2mm and wall thicknesses like 14.5, 16 and 18 mm. I have gone through API 5L (very thoroughly again and again)and all I find is OD...
  2. OwaisGillani

    API 5L question

    hi Is it possible in any way for the buyer to specify line pipe dimensions with constant ID and different OD? e.g. pipe of ND 18-inch but with constant ID of 425.2mm and wall thicknesses like 14.5, 16 and 18 mm. I have gone through API 5L (very thoroughly again and again)and all I find is OD...
  3. OwaisGillani

    Source for steel prices

    Hi I was wondering if there is any free information source on the internet where I can find the prices for different grades of steels used in pressure vessel industry? Like A516 Gr. 60 & 70, A240 316L, Duplex 2205, Inconel 625 etc. Any help will be appreciated. regards
  4. OwaisGillani

    UG-45 calculations for manways

    Dear members What is your opinion regarding the requirement of UG-45 (Min. nozzle neck thickness) calculations for manways? Are such calculations mandatory even for manways? Waiting for the replies.
  5. OwaisGillani

    U-Stamp renewal

    Guys, though you may find the question funny, please give your learned comments. "Is it possible that a shop may get the renewal of ASME U-stamp accredition without ever having the BPV code?" Looking forward to the replies Owais Gillani
  6. OwaisGillani

    Rating of existing trays

    I am working on a refinery project where I need to know the efficiency of trays in an existing column. How to rate these trays? What parameters to look for? What assumptions should I make? Any help will be appreciated. Regards Owais
  7. OwaisGillani

    Flange mounted HX on Top of Column

    Hello guys, I am required to design a 24-inch 300 lb nozzle connection on the top head of a process column for installation of a shell-and-tube HX. The data is as under. Col. Dia. = 1067mm Height = 22535mm from ground to top tan line of tower. Des. Pres.= 400 psig Des. Temp.= 350 deg F...
  8. OwaisGillani

    Stress Relief Vs. PWHT

    Guys, I have come across a pressure vessel drawing which says: Stress Relief : YES PWHT : NO which seems a bit confusing. Aren't these the same? Please clarify. Regards Owais Gillani
  9. OwaisGillani

    Capacity Evaluation of fabrication shops

    Hello I am working as Design Engineer for pressure vessels for an overseas assignment. Because of the govt. policies, maximum fabrication has to be done there. I am planning to visit the major fabrication shops for capacity evaluation so that I may redesign some of the vessels according to...

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