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  • Users: chemg
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  1. chemg

    304 or 316SS for chemical injection skid

    The fail was due to acid attack on a weld... Some of my coleagues said it's no reason to change it, because the fail might be in the weld and not due the material. The material is 304, not L.
  2. chemg

    Rotameter Choice

    I'm sorry my friend, you need to purchase the water one. The design is so different that any "conversion" will be useless. I can say that because as operator, I was a lot anger with the people selecting the rotameters. i.e., we have rotameters for crude 47API and when we change it to 30API it...
  3. chemg

    304 or 316SS for chemical injection skid

    Hi We're checking the material requirement for one skid to feed bactericide into some process lines ( 45°C/113°F; 218psi), around 10l/h of Glutaraldehyde, Quaternary amine and THPS, each one for 6 days. Currently, our standard is to use 304SS, but due to a fail in one weld we started to think...
  4. chemg

    B31.8

    Hi Guys I've been checking too the 31.8, but i'm not sure if it's only for gas pig traps (or scraper traps...). We have a diameter specification for the pipes around the trap, quoting that the kicking pipe must be 4" less than the piping size and the recieving pipe 2" less, but i cannot find...

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