So THIS is how you connect curtain rods around corners, in bay windows and such! Curtain rod connectors. Come in several colors.
Hi Sugarplum | Galvanized Pipe Curtain Rod (not so industrial looking)
Blue kitchen - via cocolapinedesign.com
DIY conduit curtain rod
Double conduit curtain rod.
Galvanized Pipe Curtain Rods
Examples of the different heading types available, I quite like the inverted pleat and single pleat styles for a structured tailored look
Decorative smocking with beading by Gillian Wendel
pretty drapery heading by Signature Interiors / http://signatureinteriorsblog.com/2014/06/21/curtains-with-scallop-shaped-contrast-lined-heading/