In article ,
BigWallop wrote:
If they're soft malleable iron, then they can corrode

I recently removed some (dead) 100 year old gas pipe from the cellar. The
fittings were still in near perfect condition - and unscrewed easily
enough. Think it would be some circumstances where they'd corrode through
in the lifetime of a boiler.

--
*'ome is where you 'ang your @ *

Dave Plowman London SW
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