Friend is removing one rad and replacing it with two others. In lifting
the floor he has found that the main supply around the first floor is in
thin wall steel pipe with what appears to be 15 mm copper tee-ed off to
the actual rads. I've measured an offcut of the steel as being 21.5 mm
OD with walls of about 2.5 mm.

WTF????

The offcut is showing only very faint signs of rusting the (hacksaw)
cut end. The pipe can be cut without difficulty with an ordinary pipe
cutter. It is not, according to my magnet, stainless steel - is that a
reliable test?

He's a little perplexed as to how he inserts new tees to supply the new
rads. Slipping a 22 mm end feed joint onto the offcut reveals a large
gap that I think is too big for soldering.


Q: What is the steel pipe? What fittings should/can he use? Is all lost!

TIA

Richard

--
Real email address is RJSavage at BIGFOOT dot COM

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