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  1. mombu

    the deoxidizing of titanium tubes surfaces

    Dear all, can anybody helps me solving the following doubts? Our client requested, for titanium tubes, the deoxidizing of the external surfaces , at both ends of each tube. I suppose that this is somehow concerning the subsequent welding of the same tubes to the tubesheet (I am talking about...
  2. mombu

    minimum Cr and Mo content in 13CrMo4-5 plates

    Dear all, does someone have experience with 13CrMo4-5 plates having the following minimum requirements?: Cr minimum 1% Mo minimum 0.5% Is seems that while 1% min. Cr is possible to achieve the 0.5 Mo content not. The main mills I involved gave me a minimum Mo content of 0.47% but not sure...
  3. mombu

    AUSTRALIAN CODE vs ASME CODE

    Dear all, can someone help me to understand which are the main differences between the AUSTRALIAN CODE AS 1210 and ASME Code? Can the Equipment designed and manufactured per ASME Code be in compliance also with AS1210 Code?? Is the ASME Code acceptable i lieu of AS 1210?? Which of these two...
  4. mombu

    STABILIZING AND ANNEALING OF SS321 TUBES

    Dear Edstainless / metengr, you have been very helpful !! Thank you ! Now I will contact again the tube suppliers and further duscuss.... I will keep you informed about. thanks again mombu
  5. mombu

    STABILIZING AND ANNEALING OF SS321 TUBES

    Dear , thanks a lot for your reply. I agree with you but my main concern is the following: - the tubes ( as straigth) will be at mill 1) solution annealing treated at 1050°C 2) stabilized at 900°C for 2-4 hours - a client specification claims the U-bends + 300mm of straigth legs shall be...
  6. mombu

    carrier ring gaskets

    Dear all, has anybody already experienced the calculation and use of this kind of gaskets ? I am facing the calculation of carrier ring gasket with OMEGA RING in two(2) halves with two cases "on the table": CASE 1) two 2 halves of OMEGA metal gasket each holding a spiral wound gasket which...
  7. mombu

    STABILIZING AND ANNEALING OF SS321 TUBES

    Dear all, I hope someone could help me about the following: I have SS321 tubes with OD 25.4 mm (1") and thk 2 mm which shall be bent as "U" tubes. The requirement of NACE Standard RP0170-2004 and Client (Protection of Austenitic Stainless Steels and Other Austenitic Alloys from Polythionic...

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