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  • Users: sovog
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  1. sovog

    Duplex to Super Duplex Welding

    weldtek I have reviewed QW 256, apart from the change of 1 base metal which is still within the P No of the original procedure; we will not be making any other changes to the variables, which in my biased opinion does not violate the code. Thanks for your opinion; you have clarified my thoughts...
  2. sovog

    Duplex to Super Duplex Welding

    weldtek We are not changing the filler wire or classification from the original procedure used on the S32750 procedure. We wish to utilise the S32750 procedure where instead of S32750 welded to itself, it would be welded to S31803. No variables from that of the original S32750 procedure will...
  3. sovog

    Duplex to Super Duplex Welding

    The S32750 we plan to utilise had impacts carried out @ -50°C. We are to use Zeron 100 Tig wire as per this procedure.
  4. sovog

    Duplex to Super Duplex Welding

    We have a small project where there is a requirement to weld Super Duplex 25% Cr S32750 to Duplex 22% Cr S31803. If I am correct in my understanding of ASME IX QW 424.1 that any material assigned the same P No can be welded to any other material assigned the same P No. They are both P No 10H...
  5. sovog

    S460G2+M VERSUS P460NL1

    metengr Thanks very much for your advice it was most helpful in confirming the need to qualify WPQR for particular material grade.
  6. sovog

    S460G2+M VERSUS P460NL1

    metenger Thanks for your response. The welding will be carried out with GTAW / GSFCAW process. The client has not clarified fabrication and welding code at this point but we are proposing ASME IX code in our bid. This project is a structural fabrication which within it utilises some pipe...
  7. sovog

    S460G2+M VERSUS P460NL1

    I have material P460NL1 to be welded (8mm fillet) and have an existing weld procedure for S460G2+M. I have checked the Max chemical values and Min yield strengths and as far as I can see they are more or less similar and within range of each others Max & Min requirements other than the P & S...
  8. sovog

    VISUAL INSPECTION IN ACCORDANCE WITH ASME B31.3

    Can someone point me in the direction of a clause in ASME B31.3 where the visual acceptance limits change for high pressure lines? We currently have a project where the acceptance refers to ASME B31.3 Table 341.3.2 & ASME V Article 9. The WT is 10 and 11mm so the internal protrusion as I read...
  9. sovog

    AISI 8630HM

    Can anyone please advise if AISI 8630HM has similarities with 4130 or 4140 material and if it can be welded useing a 4130 or 4140 weld procedure.
  10. sovog

    Transfer of Weld Procedures to new group member

    metengr. Thank you very much for the reply, most helpful to clarify our position.
  11. sovog

    Transfer of Weld Procedures to new group member

    The group has taken ownership of WPS from other aquired companies as of QW-201.1 and transfered on to group headed paper. We have a new start up company working with the same quality system as another group member (an extension with a different name) . Can the new start company utalise the group...

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