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Ted Mooney, P.E. RET
Pine Beach, NJ

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Magnetism the piping

Magnetism
We coat steel pipe externally using fusion bonded epoxy and Abrasive resistance overlay coating on 24"-48" diameter pipe thickness rang from 025" to 0.999"
Pipe is heated to 450F prior to the coating application, to heat the pipe we use natural gas furnace and DC induction coil to achieve desire temperature.
Use of DC induction coil cause magnetism ion the piping which exceed the API required limit 30- 35 gauss
There is anyway the process can be improve , how to minimize magnetism while using DC induction coil.

Chris Newton
Student - Florida, USA
2006

Learn about demagnetization. Very well known for decades.

Guillermo Marrufo
Monterrey, NL, Mexico
2006

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