danb might be right but it depends on the ancillary on the pipe that attached to the spring.

Mechalex, I suggest you go through the catalog pages and select your spring type first and find out the ancillary required on the pipe. Some cases the spring attached members may take the load from centerline of the pipe. Some cases the pipe can sit on the saddle and the saddle is attached to the structural frame which spring is attached. You can find many variation of the supports with spring(s)

I suggest you select the spring and the support type first, perhaps this will give you the right answer, if not satisfied discuss with experts either here or with the supplier.