(Guidelines for Pressure Boundary Bolted Flange Joint Assembly) The use
of the Simultorc™ type of bolting system is recognized by ASME as the preferred method for
flanged joint assembly.
(page 33) states: “The simultaneous use of multiple tools spaced evenly around
a flange has been shown to give equal or even superior tightening parity, and parallel closure, in
less time than using a single tool in a cross-pattern.”