The Hydraulic Double Chain Clamp has a power hydraulic tensioning mechanism incorporated into its design. The hydraulic cylinder of the hydraulic tensioning mechanism, which has a 5″ (127mm) stroke, applies up to 10,000 lbs (4535kg) of tension to the standard Double Chain Clamp. Rapid and effortless tensioning can be applied to the Double Chain Clamp to close it on the pipe. Hydraulic pressure is supplied to the cylinder by a hand pump with reservoir. The clamp is specifically designed to align pipe up to Schedule 120 and reform pipe to Schedule 80.