The Plumber's Choice 1-1/4 in. Steel Cable Clamp; Hangs Tubing, Wiring, Ropes, for PEX, Plumbing, Marine, Automobile; Galvanized 114CPSWG - The Home Depot
Source Galvanized Pipe Fitting Saddle Clamp PVC Pipe Saddle Clamps With Two Hole 304 Stainless Steel Saddle Pipe Clamps for Tubes on m.alibaba.com
Source 6mm-200mm hot galvanized pipe clamp heavy duty pipe straps on m.alibaba.com
Pack of 50) AP-10451, 3/4 Inch Two Hole Snap On Pipe Strap for EMT Conduit Installation, Reinforced Rib for Extra Strength, Galvanized Zinc Plated Metal, Tension Clamp for Easy Snap-On - Amazon.com
EASTMAN 1-in to 1-in dia Stainless Steel Repair Clamp in the Pipe Support & Clamps department at Lowes.com