Just finished applying the second coat of paint to my pipes. I bought the paint from Restom which is a French company specialising in tank lining products. It's gloss and high temperature resistant. Although they say to apply directly to the bare metal I first used a rust inhibitor from Loctite, and then 2 coats of paint. Between coats I rubbed it down a bit, because the gloss does bring out every little imperfection. It looks ok wben dry, just hope it's effective.