First post from this newbie.

I’m interested in building a steel frame bike with flat bars and wider tires. I currently have a flat bar Bianchi Torino with 28’s and a 3x8 drivetrain. I’m not in for top speed, just comfort for a couple hours in the saddle several times a week.

Is is there a manufacturer that sells frame sets specifically designed for flat bars? I see Salsa and Surly offer frames, but the vast majority are for drops.

thanks in advance.