I am currently doing a bit more research on this matter with the engineers in my company. The torque booklets we currently use show different values for the larger flange sizes however I've been informed that new tables are going to be issued soon with values all the same irrespective of flange...
Thank you for your prompt reply.
I have a set of torque tables that show RFWN and RFSO torque values for their respective flanges. Although most torque values are the same, on occasions there are some diffences, usually with the higher flange sizes. For example: a 14" 300# Weld neck has a torque...