[Thomas]

Yes, nickel plating the pipes needs correct bending before applying. Nickel is very brittle not because of the thickness but because of the material itself. The reason is its face-centered cubic crystal structure in contrast to body-centered cubic of chrome which makes the latter hard (same as carbon vs. diamond). Because of the price I opted for nickel (not for diamonds) and it's ok.
Merry Christmas, Thomas

[Rick Parkington]

Just for the record, the pipes are 5/ 16" outside diameter (not 8mm central heating pipe which is slightly bigger and may no fit the olives) and the nuts are 1/ 4 BSP. People often suggest silver solder for strength - some original pipes were done that way - but soft solder is adequate as well as needing much less heat making it easier to do and also much simpler to de-solder and salvage old nipples.
And as a final thought, modern bright nickel plating seems to make pipes very brittle in a way that originals are not,  possibly because the plating is too thick, not sure - but I don't remember having any bother with electroless nickel plate on pipes. Anyway if you choose to plate them make sure the bends are correct before getting them done.
Cheers Rick

[Badgerman]

Many thanks Daniel, sorry I missed those on the shop.

Jamie

[Daniel]

Suspect this is what you are looking for:

https://marston-sunbeam.org/sunbeam_shop17/index.php?id_product=656&rewrite=oil-and-petrol-pipe-olives&controller=product

[Badgerman]

Need to replace a couple of the oil feed pipes on the model 9 and would appreciate it if someone could tell me the original size of the copper pipe I need and the solder nipple size?  I presume all of the pipes from and to the oil tank are the same size?

Appreciate your help

Jamie