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  • Users: carlomaderazo
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  1. carlomaderazo

    Butt Welding of Ductile Iron

    Hi racookpe1978, It is a gravity pressure in soil...
  2. carlomaderazo

    Butt Welding of Ductile Iron

    Hi metengr, Originally, the pipe has a bell and spigot joint. Then, it has been shorten the length as required at site installation. Then, the proposed solution is to join the pieces by butt welding.
  3. carlomaderazo

    Butt Welding of Ductile Iron

    Can anybody explain if butt welding for ductile iron material is applicable? What parameter required to obtain good sound weld? Thanks.
  4. carlomaderazo

    Position of Pipe Longitudinal Seam Weld

    Hi, May I know where can I find in ASME B31.3 the minimum longitudinal weld seam distance for piping and what should be their locations? Thanks
  5. carlomaderazo

    Joining of Copper-Zinc-Lead Material

    I would like to know how to join the Copper-Zinc-Lead material? Which is better process, GTAW welding or Brazing? And what filler I have to use?
  6. carlomaderazo

    Minimum Hardness Value of P11 Alloy weld

    I would like to know the minimum hardness test value requirement of P11 weld joint? As mentioned in the ASME standard is the maximum value only..
  7. carlomaderazo

    Material Equivalent for U71Mn

    Kindly tell me what is the ASTM/ASME equivalent for U71Mn material. And what electrode I can use for overlay welding? thanks.
  8. carlomaderazo

    Plate thickness for end of pipe Hydrostatic Test

    Well folks, I found the answer from the previous thread..see the link below: http://www.eng-tips.com/viewthread.cfm?qid=43256
  9. carlomaderazo

    Plate thickness for end of pipe Hydrostatic Test

    Ron, i appreciate your concern. I am familiar in hydrostatic testing but of course I am not familiar in special case like this. If I will ask some local consultant, I think I don't need to raise this question in this forum. The reason I need the calculation is because we need to fabricate blind...
  10. carlomaderazo

    Plate thickness for end of pipe Hydrostatic Test

    Kindly give me a calculation of plate thickness to be used for hydrostatic test..
  11. carlomaderazo

    Combination of Welding Procedure

    Hi QualityAsia, If I can only convince TPI that paragraph QW-200.4(b) shall not be considered, I will be happy. But the code must be followed for combination of welding procedure..as per the requirement according to QW-451.1.
  12. carlomaderazo

    Combination of Welding Procedure

    Hi Weldtek, According to ASMEIX...To prepare single WPS with multiple PQRs, refer to QW-451.1, Note (2) "For combination of welding procedure, see QW-200.4". Where in QW-200.4(a) for qualification of WPS for root pass deposit only, refer to QW-200.4(b). In QW-200.4(b) to support the single...
  13. carlomaderazo

    Combination of Welding Procedure

    I am also little bit confused with the interpretation...why ASME IX provides an example like in par. QW-200.2(f), where mentioned about "a single WPS may cover 1.5 to 32mm if PQRs exist for both the 1.5mm through 5mm and 5mm through 32mm thickness range". How we can satisfy the paragraph...
  14. carlomaderazo

    Minimum butt weld joints distance for piping

    Hi Everybody, Where can i find in ASME standards the minimum girth butt joint to girth butt joint distance for piping?
  15. carlomaderazo

    Combination of Welding Procedure

    Hi Everybody, This is my query: I would like to prepare single WPS with two supporting PQRs. PQR-1 is GTAW process with 2.77mm coupon thickness and PQR-2 is SMAW process with 10.00mm coupon thickness. I would like to know if I can make WPS with the PQR-1 as root/hot pass and PQR-2 is fill/cap...
  16. carlomaderazo

    Hardness Test Value of A106-Gr. B material

    I would like to know where can I find the required maximum hardness test value(HB) of carbon steel(A106-B) after post weld heat treatment. Is this mandatory to carry-out in the preparation of welding procedure, if the design codes are for ASME I, B31.1 and B31.3?
  17. carlomaderazo

    PWHT Heating and Cooling Rate

    ok, thanks metengr..
  18. carlomaderazo

    PWHT Heating and Cooling Rate

    Where can I find in ASME Section I the requirements for the heating and cooling rate during post weld heat treatment of material(ie: Carbon steel)?
  19. carlomaderazo

    Welding of AISI904L UNS N08904

    It was our customer who made the design. Anyway, I will consult to the welding engineer for this. Thanks.
  20. carlomaderazo

    Welding of AISI904L UNS N08904

    It is to vent the gas from a condensate water in the condenser.

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