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  1. berrojalbiz

    alloy 800ht

    yes because if in service is above this temperature we will do the treatment in service .......???
  2. berrojalbiz

    alloy 800ht

    operation service is above 1000ºF is the outlet of a hydrogen reformer , the design in the planes said that only need pwht in trunions 875ºC for 3 hours why?? i don´t understand it it could be because of stress concentrations in those points?? thanks a lot
  3. berrojalbiz

    alloy 800ht

    and stress relief?
  4. berrojalbiz

    alloy 800ht

    in the new revision of asme VIII is not necessary??
  5. berrojalbiz

    alloy 800ht

    hi, we have to weld some pipes in this material, with pwht , in my opinion with 875ºc 3 hours is good what do you think? thaks
  6. berrojalbiz

    incoloy 800ht

    my problem is that i have to cut 104 tubes and i can´t purge all the system.....and we can´t use paper to purge because of plugging the tubes diameter 1 1/4"
  7. berrojalbiz

    incoloy 800ht

    my problema is that in other reparation of the equipment we have some problems with the purge so i´m looking foward another solutions. i think the problems were with the purge but il could be from a carburation layer of the material....
  8. berrojalbiz

    incoloy 800ht

    and anyone knows if asme code or b31.3 permit this kind of fluxes...i have to use it in a reformer hydrogen furnace at the pig tails in the outlet system...
  9. berrojalbiz

    incoloy 800ht

    hi, i have a problem i have to weld incoloy 800ht, but we have problems with purge so we want to use a backing but we have no interior access to the weld, one person talk to me about a paste backing to use someone knows something about this?? and someone knows something about tig wire with...
  10. berrojalbiz

    Metal choice for high temp. and pressure

    we have a furnace that works at 980ºc and 20 kg/cm2 internal pressure we use incoloy 800ht and sone materials like centraloy from Centracero , Spain
  11. berrojalbiz

    ABOUT WELDING

    DOES ANYONE KNOW SOME PLACE IN SPAIN TO DO A GOOD COURSE ABOUT WELDING?????? THANKS
  12. berrojalbiz

    searching for a new job

    I am 25.I work in a petroleum refinery in Bilbao (Spain) in the Inspection and Corrosion Department. I started working two years ago.
  13. berrojalbiz

    I want to do any distance studies about corrosion

    could somebody help me???
  14. berrojalbiz

    i want to improve

    I am a DEST (Diplôme d'Etudes Supérieures Techniques). I have studied in the Conservatoire National des arts et metiers. I am 25.I am working as a corrosion ,weldig and pressure vessel inspector but i want to improve.I´d would like to study more but I can´t leave my work.I´d like to study a...
  15. berrojalbiz

    problem

    we have an injection point of phosphoric ester in the bottom of goa stripper in a petroleum refinery.this point is made of hastelloy b-2 but it has been corroded in 3 years (thickness 8 mm).the tªinthe stream where the anticorrosive product is inyected is 320ºc and only is inyected when we...

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