I'm having a really hard time finding a supplier for these.
I mean the sort of pipe clip that has has two semi-circular halves that clamp round the pipe with a pair of screws and one of the halves has a little stalk with a screw through it to fix to a surface. The ones I have hold a 10mm pipe about 2cm or so from the surface.
BES have bigger ones, one brand (?) name is Munson.
I want brass (or stainless would be OK) ones for 10mm pipe.