25/10/2015 · Welding on concrete crusher., 03:50 PM. What type of wire or rod should be used to weld the Approximately 12,000 lb rotor that spins at 1800 rpm on a crusher plant. The customer insisted on a rod made by Crown Alloys called Royal 220M. The sections I had to weld were 3" thick x about 9" long, I vee grooved it all the way out each ...