Demagnetizing Gas Piping: Safe Methods Explained

  • Thread starter Thread starter William Brown
  • Start date Start date
  • Tags Tags
    Piping
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
2 replies · 2K views
William Brown
Messages
1
Reaction score
0
< Mentor Note -- thread moved to HH from the technical engineering forums, so no HH Template is shown >[/color]

Hello and thank you for your time, OK enough of that Question I have is
(1) A gas pipe in-service 16" .375 wall X52 carbon pipe and has been depressurized & cold cut and to weld a new spool piece to replace old on. At this time it was found to be magnetized. What is the safest way to demagnetize pipe to be welded?
I have read two ways. One is with heat but no one has told me the temperature which could be a factor in the integrity of the pipe and two rapping the lead but which end the positive or negative and which current electrode positive or electrode negative
Please explain in full detail & thank you very much
 
Last edited by a moderator:
Physics news on Phys.org
William Brown said:
(1) A gas pipe in-service 16" .375 wall X52 carbon pipe

I was reading this and thinking what the ?

how can you magnetise a carbon pipe ... then I realized the OP omitted an important word ... steel as in carbon steel :rolleyes:
 
  • Like
Likes   Reactions: berkeman