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  • Users: lahane1443
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  1. lahane1443

    post heating of weld for 9 Cr material

    stanweld, sorry for late response. Design code is B31.3 & yes, i will be doing PWHT also at 740 deg C for 3 Hrs. job thickness is 11.13 mm. one of the consultant advised me that you will need to do PWHT of whole unit at a time within 72 hours from weld completion & if you delay the PWHT...
  2. lahane1443

    post heating of weld for 9 Cr material

    I have to fabricate 20 identical tags in which a single spool piece of 4.2 meter long is having 16[1.5" sch160] nozzles welded on a 4" sch120 pipe [A335 P9] material. My weld procedure calls for post heating at 300 deg C for min 1 Hr. I will weld 4 nozzles at a time. what is the best method...
  3. lahane1443

    THICKNESS RANGE-ASME SEC 8 DIV 1 & ASME B 31.3 & ASME SEC IX

    Kiwi so if design code here is B31.3 & material requires impact test then will the base metal range will be t/2 to t+6 mm(per B31.3) i.e. 4 mm to 14 mm & not 8 to 16mm per sec IX.?
  4. lahane1443

    B31.1 design code

    yes CRG
  5. lahane1443

    B31.1 design code

    I am not that much familier with 31.1 design code. My design temp is 750 F and design pressure is 4.1 bar. line size is 10 inch and only 1.5" branch connection at 45 deg is to be provided. i have chosen A 106 Gr B for pipe and A105 for nozzle material.there are no circumferential or...
  6. lahane1443

    hardness test

    I do not have copy of ASTM 833.can i do poldi hardness test on weld metal per above spec.
  7. lahane1443

    plain washer

    what is the use of plain washer in bolting joint. I usually see all the filter vessels coming from our vendors are having plain washer at both sides of studs. In recent supply i found them missing. Is it mandetory to have washers at bolted joints .specifically vessels per ASME sec VIII DIV I code.
  8. lahane1443

    radioactive contamination

    what is the acceptable level of radioactive contamination in A182 304 in "mR". Customer spec calls that radioactive contamination should not be there. When we asked about the same customer said that you suggest us & we will confirm whether it is acceptable or not from there customer. What is...
  9. lahane1443

    test sample for tensile test speciment

    weldtek, From where i can get this interpretation IX-92-79. Thanks
  10. lahane1443

    ferrite number

    I have a weld procedure for austenitic steel with solution annealing. now there is a requirement of ferrite Number of weld metal. Can I weld a test sample only to conduct Ferrite Number test on weld metal using the same consumable brand as that was used for PQR and add as a addenda to PQR?
  11. lahane1443

    test sample for tensile test speciment

    I had a previously qualified PQR in which i used 12 mm thick plate for qualification.I used the same PQR for one project but same was rejected by TPI. The reason behind the rejection was that the two mechanical tensile sample were having the thickness as 10.7 mm and 11.1 mm in test report...
  12. lahane1443

    temp for subsize specimen

    I have welded two different test coupon of SA 516 GR60 TO SA 516 GR70 of 5.8 mm & 8 mm for PQR.both PQR samples requires impact test at -46 deg C per 31.3. For 5.8 mm thk Coupon lab has prepared sample of 5mm for PM & 3.3 mm for weld & HAZ. Similarly for 8 mm coupon lab has prepared 7.5 mm for...
  13. lahane1443

    parallelism

    what will be the tolerence for 6" 900# spool of 1200 mm long per B31.3? Where the tolerence is specified in the code?
  14. lahane1443

    preheat temp

    I had a customer spec which states that min preheat temp for material having tensile above 485 Mpa shall be 100 C. My material is LTCS A350 LF2 & A333 Gr 6. I have a previously qualified PQR in which preheat temp was 80 C. I submitted the same for approval & it got rejected only because preheat...
  15. lahane1443

    impact test 31.3

    thread292-232721 what will be the final conclusion for above thread w.r.t. T limit Will it be 0.25"- 0.75" per 31.3? again can i use the same PQR to weld 0.5" thick 316 plate material or am i violating the supplementory essential variabe here for filler classification. i alway get confuse as...
  16. lahane1443

    F number issue

    you r right. It must be a mistake which never got corrected. now i will take care in the current WPS. thanks.
  17. lahane1443

    F number issue

    I am proposing a WPS to qualify a plate test coupon with E316L electrode which comes under SFA-5.4 per SEC II PART C. What will be the F Number for the same? Per me its F5 per QW 432 of SEC IX but our existing old wps shows F4,so i am little bit confuse.
  18. lahane1443

    ASME IX QW 404.12

    what if the design code is 31.3
  19. lahane1443

    fitting

    I require 500 Nos pressure port of A 105,1/2" 3000 thredolet with EN 10204 3.1 for equipments. The equipment also need complience to PED. I have taken a quote from one mfg but his price is too high.Now i have other idea, i have taken a quote from another mfg for forging of round rod of A105 &...
  20. lahane1443

    painter qualification

    since painting is a special process. our ISO Auditor has put an NC to us that we do not have qualification record for painter . I have a fair idea of welder qualification. is it similar to this? Do i need to make a painting procedure specification to qualify a painter?i really don't know. We...

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