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Recent content by JackMats

  1. JackMats

    BASIC METALLURGY TO KNOW

    Can't believe nobody has recommended Callister - Intro to Materials Science! If you're working in pipelines you may also want to be familiar with pipe forming processes (seam and seamless) and welding (usually SAW welding for seam pipes).
  2. JackMats

    How many pages is your CV/Resumé?

    I've always stuck to the 'two-page rule', making sure only the most important skills, achievements etc are presented in a concise manner. However, I have come across a couple of other people CVs and it appears some folks use more (I saw one guys and his was 7 pages long). Maybe I've been...
  3. JackMats

    Sulfuric Acid Pipework Material

    It would be helpful if you could determine to what extent heat transfer will occur? I assume it is ambient initially? How much cost consideration is going into this?
  4. JackMats

    Nitriding vs Corrosion resistance

    The basic steps are nitrocarburising followed by a post oxidising stage. Your usual supplier seems to be doing things correctly. The post oxidation stage, as the name suggests, helps form a protective oxide layer on the surface. It is likely the other supplier didn't do this, maybe check the PO...
  5. JackMats

    API 5L Grade X70 Cracking in Bend sample

    Lab analysis and some QC involvement to check storage and use of consumables
  6. JackMats

    SS316 Full welding stiffener ring on SS316Ti Pipe??

    Do you know why 316Ti was selected for the pipe? How will this be fabricated to the pipe? Will these be welded on? Will an post heat treatment be carried out? I would urge you to use 316L. It should be just as available and is often dual certified with 316 but do check. Also consider your...
  7. JackMats

    Duplex and ASTM G48-A Test

    Pretty harsh requirements, glad somebody else picked up on the crevice corrosion inclusion :S . Anyway, it has surpassed the 4g/m2 limit by a long way. We used to test DSS and SDSS @25degC and 50degC respectively for 24hrs as per NORSOK. Weight loss was usually negligible or in 1/100th of a...
  8. JackMats

    Welding Clad Steel 625 (API 5L X65 + 3mm Clad 625) Filler Metal

    The simplest solution is to weld the whole joint with 625 filler. Throwing other fillers in is over complicating the matter and will cause a lot of expensive rework. You will need to assess the ID with a boroscope at around 10mm fill. If no oxidation, suck back, miss edge etc had occurred then...
  9. JackMats

    Antimony in heat resistant steel castings

    What is the service and how are your mechanical/corrosion tests? If any problems were to occur I would envisage this would be with the ferritic due to embrittlement and subsequent cracking. What grades are they?
  10. JackMats

    Any Oil and Gas Casualties so far?

    ScottyUK wish I could say the same for our company, we've got a lot of contractors still kicking about and we've been through two rounds of redundancy
  11. JackMats

    Any Oil and Gas Casualties so far?

    Apparently I'm being demobbed from my project at the end of the month and will have to go back to the UK. I thought this project would see me through 2016 so I'm a bit disappointed. To top it all off my line manager has told me I will be under consultation when I get back with a view to being...
  12. JackMats

    Working abroad (and long term travelling)

    Hi! Taking a year out won't do any harm at all and don;t listen to anybody who tells you otherwise, they're wrong! Any employer would be fine with it when you come to apply for jobs a year later, and over a say a 40 year career, the difference between starting at say 22 or 23 is negligible. Now...

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