can you help me , i am about to start a job which involves removing large steel window frames from old factory this must be done with as little or no damage to brickwork as possible , i would like recomendations on equipment and the process in which to succesfully complete this project . cost is not a problem .
Use a 4inch angle grinder,cut the hinges and remove the sash first.
Cut sections out of the head of the frame and the cill and use a long crowbar to ease the rest of the frame out.
The frames have steel spikes bedded into the brickwork and should ease out,but you may need to cut some as they tend to be awkward sometimes.