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Recent content by KM0818

  1. KM0818

    Resolving 304 SS chemical analysis disputes

    Except for the supposed certification from the mill for the bars and the original certifications from the casting supplier, all tests have been done on product. Maybe they are still doing "wet" analysis in China. Here is a recent explanation I got from the guy who is trying to resolve this on...
  2. KM0818

    Resolving 304 SS chemical analysis disputes

    Thanks, Metaljon
  3. KM0818

    Resolving 304 SS chemical analysis disputes

    Hi, all. I would appreciate input on this. We purchase stainless steel components regularly and have an incoming inspection procedure that combines sampling with PMI method and outside lab tests using OES. Just recently, for the first time in a few years, we began repeatedly receiving batches...
  4. KM0818

    Valve pressure test fluid

    bcd, thank you. You have described well the situation we face.We don't want to use kerosene for safety reasons. Someone we contracted set up some testing for us with water with a corrosion inhibitor, but they were complaining about the odor of the parts after they sit on the shelf for a while...
  5. KM0818

    Valve pressure test fluid

    Thanks, gerhardl. Although we are not certifying to the ASME spec and not asking the supplier to do so, we intend to follow it almost exactly. So, from my perspective, I agree with your comments. I won't make an exception unless I can find a strong justification to do so, which I don't have...
  6. KM0818

    Verify NPTF thread with L1 and L2 Gage

    Yes. In the past I have used the gages both before and after plating. When we used them before plating, we first developed a correlation between the change in L1 and L2 reading before plating and after plating. The amount of change per plating thickness should be the same for both L1 and L2...
  7. KM0818

    Valve pressure test fluid

    Hi. We are purchasing high pressure valves and setting up test equipment to verify valve test performance based on the methods of ASME B16.34. My question is about the test fluid. The specification and similar specifications call for the tests to be done with water, which may include a...
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