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  1. mirhosseini

    QW453

    Thanks for your good answers. But I have a problem yet I want write a WPS for overlay for 2 different layers,can i have a PQR with any thickness of the weld overlay deposit? there is no any limit on maximum or minimum thickness of the weld overlay deposite in my WPS? Regards H.Mirhosseini
  2. mirhosseini

    QW453

    In ASME Sec IX, QW 453, note 1, we read: "for processe depositing a weld bead width greater than 1/2 in. wide, the weld overlay shall consist of a minimum of three weld beads in the first layer" My questions: 1-How many layers shall be welded in corrosion resistance overlay? for example it can...
  3. mirhosseini

    Number of passes

    Correct post As you know, for groove area an increase or decrease > 25% in number of passes needs requalification. I want to know Where the number of passes mention in WPS? Regards H.Mirhosseini
  4. mirhosseini

    Number of passes

    As you know, for groove area an increase or decrease > 25% in number of passes needs prequalification. I want to know Where the number of passes mention in WPS? Regards H.Mirhosseini
  5. mirhosseini

    about welder test in 6Gr position

    In AWS D1.1, 4.8.1, permited melt-through is 3 mm except for T-Y and K connection. Now if I have a welder test qualification coupon according to figure 4.27 and melt-through is more than 3 mm can I accept this welder or not? Regards H.Mirhosseini
  6. mirhosseini

    About visual inspection

    In AWS D1.1, 4.8.1, permited melt-through is 3 mm except for T-Y and K connection. Now if I have a welder test qualification coupon according to figure 4.27 and melt-through is more than 3 mm can I accept this welder or not? Regards H.Mirhosseini
  7. mirhosseini

    contradiction in QW-256!!

    In ASME Sec IX, QW-256, change AWS class is supplementary and nonessential variable. In QW-404.12 "change in SFA specification filler metall" needs requalification but in QW-404.33 this variable is nonessential. I cant understand this contradiction. could you explain about it? Regards...
  8. mirhosseini

    About QW-404.5

    According to QW-404.5 a change from one A No. to any A No. needs requalification. but I cant understand the mean of this sentence: "qualification with A No. 1 shall qualify for A No. 2 and vice versa" Could you explain this sentence? Thanks H.Mirhosseini Regards H.Mirhosseini
  9. mirhosseini

    About T,K or Y connection

    According to item 4.12.4.1 of AWS D1.1, qualification for CJP tubular groove weld requires a test coupon conformanced with figure 4.27 and a sample test. In figure 4.27 minimum nomial OD is 6 in. As I know we can find qualified range in Table 4.2 and as per T4.2 a pipe with OD 6 in. qualified 6...
  10. mirhosseini

    Abnout mock-up

    In AWS for non-prequalified WPS fillet weld, a mock-up test is required and several Macro sample are made from mock-up specimen. cuold you me more about mock-up? how we made a mock-up specimen(size...)? thanks Regards H.Mirhosseini
  11. mirhosseini

    QW 200.4 (a)

    Thanks a lot! Could you tell me about following situation: 1- The same WPS and PQR (if Notch-Toughness test is NOT required). 2- WPS: Base metal thickness:16 mm process:GTAW PQR: Base metal thickness(Same P-Number and G-Number):25mm process:GTAW + SMAW Deposite weld metal thickness:9 mm(root...
  12. mirhosseini

    QW 200.4 (a)

    I have a questoin for QW200.4(a) of ASME SecIX where we read "one or more processes or precedures may be deleted from a qualified combination procedure". My WPS: Base metal thickness:14 mm process:GTAW My PQR: Base metal thickness(Same P-Number and G-Number):20mm process:GTAW + SMAW...
  13. mirhosseini

    buildup of clad material

    Dear bmoorthy! I'm a young inspector working in a offshore project. Some of my questions are not a practical problem in my work. learning is main reason for my questions. However thanks a lot for your proper and influence answers. Regards H.Mirhosseini
  14. mirhosseini

    buildup of clad material

    tanks a lot! I explain my problem in better way. Base metal is API 5L, cladding with inconel and used filler is NiCrMo3. We want to put a SOCKOLET (inconel) on clad pipes. For this purpose we have to buildup on base metal(API 5L) and then the SOCKOLET is jointed to builduped zone on API5L. In...
  15. mirhosseini

    buildup of clad material

    I have a question about Buildup. I have a WPS for buildup a clad material(In this WPS first the base metal grind down to clad material and then the filler metal is deposited.) and I want to support my WPS with a PQR. Please tell me about the test coupon that we shall prepare for this PQR...
  16. mirhosseini

    How can we weld a clad material to inconel 625?

    Tanks a lot bmoorthy The refrence is ASME Sec IX. I want to know according QW-403.5 ASME Sec IX (when the PQR need impact test) can I run a new PQR for API5l to API 5l with same filler metal and support my WPS (Inconel 625 to API5l clad) whit these two PQRs? tanks Regards H.Mirhosseini
  17. mirhosseini

    I have a question about QW-217 of A

    I have a question about QW-217 of ASME Sec IX where we read, “When the cladding thickness is not included in the design calculation”. Please tell me when and why we don’t calculate thickness of clad in design? Tanks Regards H.Mirhosseini
  18. mirhosseini

    QW-153 ASME Sec IX

    According to Qw-153 (C) ASME Sec IX specimens shall have a tensile strength more than minimum specified tensile strength of the weld metal when the applicable Section provides for the use of weld metal having lower room temperature strength than the base metal. Now, please tell me about...
  19. mirhosseini

    How can we weld a clad material to inconel 625?

    Hi to all ! this is my first question!! We want to weld API 5X, clading by Inconel, to Inconel 625 and used filler metal is Er NiCrMo3. We have a PQR for Inconel to Inconel and used filler metal is Er NiCrMo3. I think if I have a PQR for API 5X to API 5X with used filler metal Er NiCrMo3, then...
  20. mirhosseini

    How can we weld a clad material to inconel 625?

    Hi to all ! this is my first question!! We want to weld API 5X, clading by Inconel, to Inconel 625 and used filler metal is Er NiCrMo3. We have a PQR for Inconel to Inconel and used filler metal is Er NiCrMo3. I think if I have a PQR for API 5X to API 5X with used filler metal Er NiCrMo3, then...

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