Oatey 2 in. Steel Riser Pipe Clamp 33579 - The Home Depot
uxcell Adjustable Pipe Bracket Clamp, 3/4" (20mm) Wall Ceiling Mount Iron Pipe Strap Support 5pcs - Amazon.com
2 Inch Cast Iron Pipe Clamps, Heavy Duty, C Clamp
Tube clamps - Malleable Iron Pipe Clamp Fitting 143-A27.
Oatey 4 in. Steel Riser Pipe Clamp 33581 - The Home Depot
The Plumber's Choice 1-1/2 in. Hinged Split Ring Pipe Hanger, Galvanized Iron Clamp with 3/8 in. Rod Fitting, for Suspending Tubing (5-Pack) 112HSHG-5 - The Home Depot