Steel Pipe Crushing Calculations

2012320hi all i have a project in which i need to flatten the ends of some 114 inch sch 40 1 od x 0 wall carbon steel pipehe flat part needs to be about 4 inches longy question is how much force will be required to do this im hoping to be able to make a press from a bottle jack to be able to do this but have no idea what size jack will be required.