Recent content by rbjscott

They are not ropes. Thousands of Kevlar fibers in a sheathe made for that purpose. Stronger than steel.

I worked for a large refinery. They had at least two 4 1/2 drive impact wrenches. We used a crane to suspend them, Pipe handles to keep them from turning. They weighed about 400 pounds. 2 and 2 1/2 inch impacts were more common. Later they went to hydraulic tightening for safety reasons.