Black Iron Pipe- Dissimilar metal?

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Old 05-20-14, 12:27 PM
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Black Iron Pipe- Dissimilar metal?

The gas line that runs in my basement (1" black iron) is touching the steel support beam. Is that an issue of dissimilar metals touching? Corrosion?
 
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Old 05-20-14, 01:03 PM
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Iron to iron, probably not. I like to cushion any pipe against a hard surface with a strip of rubber, etc. just for a warm and fuzzy.
 
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Old 05-21-14, 01:28 AM
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99.9% chance of that black "iron" pipe really being steel. Iron hasn't been used for threaded piping for about 75 years, maybe more.
 
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