Free images results:

Pipes pictures, stock photos and images


Car_10 Stock Images
Author: Clv69
Water Tower Royalty Free Stock Photography
Author: Suti

Also, here are some commercial RF-licensed images that match your search criteria:  
Pipes Stock Photos
Author: Pjc
Pipes Royalty Free Stock Images
Author: Adpower99
Pipes Royalty Free Stock Photos
Author: Pilarts