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  • Users: Cormet
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  1. Cormet

    Dissimilar Metal Weld Qualification

    For a weld P1 - P8 plates (fillet weld & same thickness) is it mandatory to have chemical composition of test coupon in PQR? Also, what part in Section IX says about need to list also hardness of test coupon? Service is non-corrosive and it is a tank. Thanks, Cormet
  2. Cormet

    Pipe Labelling

    Hello, Is it mandatory in the US to place labels to ID service & flow on pipes in Polyethylene plants? Thanks
  3. Cormet

    Ethylene Furnace tubes contamination

    Colleagues, Alloy is 35Cr45Ni (no ASTM spec to reference). 1. Furnaces are being erected and it was noticed that some of the tubes have multiple rust spots, typically these results from carbon steel contamination. I'd like to hear your expert opinions on expected damage mechanisms if carbon...
  4. Cormet

    corrosion by isobutane

    where can i find corrosion rates isobutane Vs. carbon steel and isobutane Vs. austenitic stainless steel?? Temp : 100F Press : 225 psia Cormet

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