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  1. nabeel3

    Looking for Traditional Method to Design Centrifugal Pump Impeller 🔧

    Centrifugal and Axial Flow Pump, by A.J Stepanoff
  2. nabeel3

    What type of Corrosion

    is this pitting
  3. nabeel3

    What type of Corrosion

    This is all what the client provided. Only outside barrier for insulation
  4. nabeel3

    What type of Corrosion

    Tank is Carbon steel. ASTM A 283-C or A 573-70. Built around 2016
  5. nabeel3

    What type of Corrosion

    Greetings What type of corrosion is this? Pitting or General corrosion or Carbon steel Deminilarised Insulated Water Tank. This is found after removing insulation. tank Tank is near to sea .
  6. nabeel3

    API 650_Polygon shape for Bottom plate

    Hello Seniors, According to API 650 Section 5" The ring of annular Plates shall have a circular outside circumference, but may have a regular polygon shape inside the tank shell, with number of sides equal to the number of annular plates." is this clause(number of sides equal to the number of...
  7. nabeel3

    Right cleaning method for butt welds

    Check weather the painting is for Piping identification purposes, which is pipe colour coding. In that case u need only brush the pipe with the paint, no blasting is required. Usually wire SS wire brush is used for cleaning. i am not sure if blowing some compressed gas is used for cleaning.
  8. nabeel3

    Tank Bottom Bevel

    Thank You all for your response
  9. nabeel3

    which valve is it

    Thank you All,
  10. nabeel3

    Tank Bottom Bevel

    Dhurjati Sen Oh, sure . Confusion came because of the word Bottom plate replacement. We are adding a new plate over existing bottom.
  11. nabeel3

    which valve is it

    Danlap The valve is 1989 make. Data Actuator type: OV 300 Rotation: 90 degree Turns: Max Torque: 360 nm Serial Number: Constr Year: 1989
  12. nabeel3

    Tank Bottom Bevel

    Drawings are not available in the plant . The tank is constructed in the mid 80's . Now , bottom shell thickness is around 9 mm. i was thinking is it required to do bevel of the shell plate (9 mm). Also my understanding is that the new bottom plate shall also extend 50 mm outside of shell ,one...
  13. nabeel3

    which valve is it

    Dear All Which type of Valve is this? Combined Potable & Fire water Tank outlet ,14 inches dia . No drawings available.
  14. nabeel3

    Tank Bottom Bevel

    Dear All Is it required that for an 8 mm new bottom plate replacement over existing plate shall have full penetration weld to the shell plate. I mean is a bevel required in the shell plate . All bottom plate to be replaced. Plate is A36. API code .
  15. nabeel3

    Sequence Back Weld

    If i avoid back gouging with E6010 , will it be considered as full penetration weld
  16. nabeel3

    Corrosion Test for Nickel Alloy 825

    Dear All In continuation to the following thread, https://www.eng-tips.com/threads/welding-procedure-qualification-standards-for-stainless-steel-for-corrosion-resistance-service.518896/post-8988507 Is it required to do any corrosion test for Welding Alloy 825 pipes for 95% concentrated...
  17. nabeel3

    Sequence Back Weld

    Sen, Water tank
  18. nabeel3

    Sequence Back Weld

    Hello Mr Sen The requirement is to grind the root pass , Do DPT and then back weld. Is it OK to grind and weld from back side when welding is ongoing in front side. I mean when the root pass is lost
  19. nabeel3

    Sequence Back Weld

    Dear All Our Company is planning to start welding for 12 mm shell in a carbon steel A 36 Tank. For getting complete penetration we have to do back gouging and weld. After how many pass in the front side shall we back gouge and do back weld. This question arises due to consideration for welding...
  20. nabeel3

    Centrifugal Pump - Priming

    Dear All Out of curiosity , What is the advantage of Vertical centrifugal pump over vertical turbine pumps( or vice versa) in Hydraulic applications. Can we consider vertical centrifugal pump to substitute vertical turbine pumps ( like a VS1 ).

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