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Recent content by gtzaki

  1. gtzaki

    Single Phase Simulation to solve predominantly Single Phase Pipelines

    Hi guys/ladies Some clients had requested for us to do some simulations on their upstream gas gathering network. Their gas gathering network has been setup so that they have separators at the wellhead prior to transmission in the pipelines. Also, they have Low Point Drains to knock out water in...
  2. gtzaki

    UNS S31803 vs 316

    Thanks Andre, I was clarified of this words mixup by a corrosion specialist at the ASSDA (Australian Stainless Steel Development Association). He said that Duplex SS is a slightly magnetic material (if you put it next to a compass, it could attract the needle). He says that all duplex SS...
  3. gtzaki

    UNS S31803 vs 316

    Ed, thanks for the clarification. A supplier in China got back to me and said that they degauss their 2205 duplex prior to selling. Is it common practice for suppliers to degauss duplex? -- Australia --
  4. gtzaki

    UNS S31803 vs 316

    Ed, thanks for the clarification on S31803 and S32205. We know that 2205 is highly magnetic due to the half ferritic structures. What do you reckon, is S31803 magnetic as well? We can do a hardness test on the part, will have to source the tools for it.
  5. gtzaki

    UNS S31803 vs 316

    I've contacted the machining company and they've checked with their supplier who has said that UNS S31803 is non-magnetic, and the machining company themselves did say that it was more difficult to machine this material (which indicates possibility that it is what they say it is)...
  6. gtzaki

    UNS S31803 vs 316

    Hi We had some parts made up specified to be made in 2205 Duplex. When the parts came, it looked good and we were very happy with the machining quality. However, I remembered from my experience with 2205 that it is magnetic and so I did a simple test and found that our parts are not magnetic...
  7. gtzaki

    Vertical Pipe - Internal Pressure, Pipe Weight

    Mike Thanks for the reply. It makes sense that the effective area would be the 49mm circle (plus clearances). Thanks for tip on the backup rings, will be looking at that more closely. Cheers!
  8. gtzaki

    Vertical Pipe - Internal Pressure, Pipe Weight

    Ok here's the situation. I'm currently working on a project to develop some downhole monitoring tools for coal seam methane. In order to lower the tools, we've developed our own pipe/coupling systems of 3/8" Schedule 80 pipes and API type thread couplings. On top of that, we're sealing the...

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