Sure. Right click the titlebar and choose Configure Window Behaviour. Choose Window Specific Settings.
Make a new rule, and use the detect button to click the window which you would like to assign a property. Then, in one of the following tabs, you'll find a property called "No Borders". Check it's checkbox and set the combo to "Forced".
P.S. I use the Dutch version of KDE, so the captions might be slightly wrong.