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  • Users: mariovalenti
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  1. mariovalenti

    Cleaning of an air-colled heat exchanger

    We are doing a maintaning of an air-colled heat exchanger, which had been working in a oil refinery for years. It have 11 meters length, a width of 3,5 meters and 370 tubes (1" diameter x 1,7 mm of thickness -1/16"-). The tubes and heads are very dirty with residual oil and organic deposits...
  2. mariovalenti

    BH51 steel +mechanical properties?

    Do anybody know the mechanical properties (tensile strength and yield stress) of an old steel named BH51 o BH-51? Thank you in advance / Mario
  3. mariovalenti

    BH51 steel +mechanical properties?

    Do anybody know the mechanical properties (tensile strength and yield stress) of an old steel named BH51 o BH-51? Thank you in advance / Mario
  4. mariovalenti

    AWWA Flanges

    I need to solve a 42" shell 'split' conection in a pressure vessel using two 42" AWWA C207-1 flanges. To do an evaluation of stresses I'm looking for the steel of this flanges. This PV will have 30 psi of internal pressure design. Can anybody inform to me which is the steel of this flanges, to...
  5. mariovalenti

    PWHT with several steels at the same time

    metengr; the internal is a mesh of thin plates of SA240-316, into a carbon steel box (like in a scrubber). This box is welded to the shell. The mesh is not a pressure part. Thanks. Mario
  6. mariovalenti

    PWHT with several steels at the same time

    I need to do a PWHT to a pressure vessel manufactured with steel carbon (SA516 º70). Inside it there is (welded) some thin pieces with SA240-316 steel. Is there any problem to do this PWHT (at normal temeperatures for relieving post welding stresses)?. Thank you in advance. Mario
  7. mariovalenti

    ASME PV using EN steel

    Yes, you are right. Thank you. MV
  8. mariovalenti

    Normalizing procedure for steel heat treatment

    Thanks for your suggestion.
  9. mariovalenti

    ASME PV using EN steel

    Can anybody tell me if there is any ASME code case which allow to use EN-10028 steel for pressure vessel?. Is there any set of EN-10028 steel code allowed by ASME to be used in ASME pressure vessel?. (EN-10028 is part of the European code (Euronorm) for PV, where are specified european steels...
  10. mariovalenti

    Normalizing procedure for steel heat treatment

    The average Cv value is 20J (15 ft-lb)for 10x10 mm specimen. Thank you very much for your help. Mario
  11. mariovalenti

    Normalizing procedure for steel heat treatment

    I have a set of SA106 steel pipe, which I want to normalize (heat treatment) to improve its properties to reach the minimum values of impact test (Charpy V notched) at -42ºC (-43.6ºF). I can't get SA333 pipes, so my unique option is to do a normalizing and try to pass the impact test. The pipes...
  12. mariovalenti

    ASME 1204-10 steel

    Can anybody talk to me if the old ASME 1204-10 steel have copper in its chemical composition? Thank you in advance. Mario Valenti Argentina
  13. mariovalenti

    AS 1204 steel plates

    I have not enough information about the chemical composition of AS 1204-10 steel (somebody also talked to me about it as ASME 1204 instead of AS 1204). I would like to know if this steel is resistent to NH3 (ammonia). For example to know if its chemical composition have copper. Thank you in...
  14. mariovalenti

    ASME XII Cargo Tank Requirement

    I'm expecting to receive the last revision of ASME XII module, but I can't wait for it because I need to know some datas to design a LPG CARGO TANK as soon as possible (to request the steel for shell and heads). I'll appreciate if anybody tell me the next information of ASME XII 2007 to advance...
  15. mariovalenti

    BS500 Code and P460NL1 steel plate

    Hi, I want to know if a pressure vessel manufactured by BS5500 code (or BS EN 13445-3:2002) using P460NL1 steel plate need a post-weld heat treatment. Can anybody help me about this?. This is a normalised steel, and I have this code, but I can't find anything in it explaining about this...

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