Enduring, ageless, classic. Our bare metal finishes stand the test of time.
Unique to Castrads, you won’t find these finishes anywhere else.
Arouse creativity. Innovative finishes that intrigue and inspire.
Custom colours from the craftsmen of paint.
Eco-friendly paint full of definition & character.
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Including radiator assembly, delivery guides and pre-installation tips.
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Home / Spares & Accessories / Joining Nipples
A Simple And Ingenious MechanismRight hand thread on one side, left hand thread on the other. The ingenious mechanism by which cast iron radiators have been assembled since Victorian times.