Munsen rings are commonly used for fixing copper pipes to walls the ring part of the clip is in two parts the top part of the ring can be completly removed for easy laying of the copper pipe before fixing the top back on via two brass machine screws

This type of clip will grip the pipe tightly when fully tightened down the pipe will not have any movement even rotational 

The ring has a m10 thread allowing these to be put onto threaded rod to create a standoff bracket used with the female backplate

Or the most common way is with a male backplate which threads straight into the ring we even have brass male to female extension barrels to create larger standoffs and all in an aesthetically pleasing brass finish