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  1. ram21881

    how to protect the PTFE vlave packing and B/B gasket from damage during post weld heat treatment.

    can anyone please advise how to protect the PTFE vlave packing and B/B gasket from damage during post weld heat treatment for both small /large bore piping mainly for bonney forge products. appreciate your helps.
  2. ram21881

    Nitric acid Pipe lines

    thanks alot metengr & Edstainless
  3. ram21881

    steam trap selection

    it's for low pressure steam condensate headers for steam tracing to keep the process line heated Δ p max / Δ p min = 4.5/2.5 bar , operating pressure 3.5/5.5 bar , max alawable working pressure -1 / 9 bar.
  4. ram21881

    steam trap selection

    thanks alot TD2K & Emmanueltop, burt what do you think regarding the attached types the best one to select for this case , if it compare with the Gestra BK45.http://files.engineering.com/getfile.aspx?folder=97af35f8-8b6c-4a47-a288-78dbb390e34e&file=HPTD_Page_2012.pdf
  5. ram21881

    Nitric acid Pipe lines

    so 304L special & 310L special are acceptablebut why it's specified this special NI content specially NI > 9.5 % , WHY IT'S NOT 8% , low carbon and no MO content why also?
  6. ram21881

    Nitric acid Pipe lines

    thanks alot metengr , the temperature for the nitric acidd procees various between 122 °F to 290 °F . nitric acid with 60% concentration fed to the nitric acid storage tank
  7. ram21881

    Nitric acid Pipe lines

    why the designer select material for pipe will used for nitric acid as 304L with special containt NI > 9.5 % , why he didn't select 316L which include higher containt of NI ?
  8. ram21881

    steam trap selection

    I have a technical specification for steam trap type thermodynamic with material body A105, material of seat and cone S.S but it’s mentioned that the material of the thermal control element is S.S. I am a new at the field of buying steam trap but my understand that is thermodynamic type disc...

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