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  • Users: stanweld
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  1. stanweld

    External Corrosion of Boiler Tubes Due to Chlorides in Fuel.

    A biomas fuel for firing a boiler has 0.01% Cl. Will this cause a problem with corrosion, especially if austenitic stainless steel is used for superheater tubes? Please provide any published data in this regard.
  2. stanweld

    API 5LX-70 Spiral Welded Pipe

    Has the subject pipe been used with an alternate lcation factor, F = 0.80 in any cross country natural gas pipeline in the USA, Canada or Europe?
  3. stanweld

    WP91 alert

    We recently received WP91 fittings which exhibited stress corrosion cracking. Hardness ranged from 270 to over 400 BHN (at SCC initiation site). SCC resulted in failure on preliminary hydro. I do not have identity of fitting manufacturer. Just to let all users know - the problems with P91...
  4. stanweld

    Unknown Material for Tower Crane

    We have a drawing specifying tubular steel material designated as AS1163-350. Please provide chemistry and mechanical properties for the grade.
  5. stanweld

    Removal of rust stains from concrete

    Is there an industry recognized method or removing rust stains from architectural bare concrete?
  6. stanweld

    US Suppliers for Code Case 2328 stainless tubing

    Please provide suppliers in the US or Europe of stainless steel tubing to ASME Code Case 2328-1. Code Case 2328 has chemistry as follows: C: .07-.13 Mn: 1.00 max Ni: 7.50 - 10.50 Cr: 17.00 - 19.00 Cu: 2.50 - 3.50 Nb: .30 - .60 N: .05 - .12 Al .003 - .030 B: .001-.010
  7. stanweld

    ASME IX QW-451.4

    Does groove weld qualification with impact test qualification on 10 mm plate qualify fillet welds on materials having thickness less than 10 mm?
  8. stanweld

    Will ferrous contamination of Titanium accelerate corrosion?

    A Condenser manufacturer has delivered Titanium tube bundles that exhibit gross rust staining on the Ti tubesheets, some due to damage and weld spatter most due to rust bleed from iron contaminants left in the tubes. The manufacturer contends that the Fe contamination need not be removed from...
  9. stanweld

    Boat sampler

    Who (in the USA) manufactures "boat samplers" for metallurgical sampling and analysis?
  10. stanweld

    Codes governing use of fiber reinforced plastic structural shapes

    Are there any codes governing construction of buildings or other structures using fiber reinforced structural shapes?
  11. stanweld

    Silicon Bronze or Aluminum bronze in brackish water

    A cooling tower manufacturer has proposed using silicon bronze bolting and trim in cooling water service containing 16,000 ppm chloride, 1 ppm H2S and 3 ppm ammonia at approximately 80F. Pressure from atmospheric to 60 psi. Does this selection appear feasible?
  12. stanweld

    SCC of Welds in LNG PIpe

    While SCC of welds in type 304/304L pipe under hot insulation and in welds in LNG loading/unloading arms are well documented, have there been any documented SCC failures in the circumferential welds of LNG transfer pipe?
  13. stanweld

    Well Water Iron Content

    At what level of iron concentration in deoxygenated well water will iron precipitation occur when subsequently oxygenated.
  14. stanweld

    Corrosion of 9% Nickel Steel in Seawater used for Hydrotest

    What are the recommended corrosion preventive methods for 9% Nickel steel LNG tanks during filling for and during hydrotest with an anticipated maximum exposure time of 60 days? Is 9% Nickel Steel highly susceptible to MIC?
  15. stanweld

    ISO/UL/NEMA Cross Referencing

    Is there a publication that cross references ISO, NEMA and UL specifications?

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