Thank you :-/

I've built and attached a few seats already, thank you. I've attached and grinded off a number of flat or angle brackets already. I was asking about a specific type of seat on a specific tube.

See this post for more seat info:

Quote Originally Posted by LongRider View Post
Attaching a seat ain't rocket science.
1. Determine the pressure points of the seat (where the majority of weight rests -- butt and shoulders mainly.) This is where you need to put the seat attachment points -- more if you are paranoid.
2. Weld something (a flat piece of metal that will support the seat and provide holes through which you can secure your seat.) onto the chosen locations.
3. Attach the seat -- usually with shoulder bolts through the seat (rigid seats only) and through the support piece then being secured with a locknut.
4. Ride off into the sunset