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btu output of 11/4\" black iron with fin on steam

molly Member Posts: 43
Can anyone tell me where to find information on the btu output of 11/4" black iron pipe with fin for steam? This is the first 2 pipe system I've seen before. There seems to be a mixture of cast iron radiators and convectors, all steam. Yes, I've just last night ordered a couple of Mr. Holahan's books on steam. Thanks from a steam newby.


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