Mechanical Engineering

Try here:

http://www.smacna.org/newsletters/pdfs/MembershipUpdateNewsletterFebruary62008.pdf

and

http://job.donkiz.in/job/hvac_duct_fabrication.htm

and

http://www.cherokeemetalworks.com/?id=103

and

google

I am mechanical engg and want study about steel fabrication drawings (BOQ, Drawing & Engineering) viz ducting

Please e-mail me on mechanicalconsultant@gmail.com

Regards

"overview of fabrication technology"

For the fabrication of what?

Trains?

Planes?

Automobiles?

Ships?

Electronics?

Steel work?

Pipe?

Tanks?

What?

Have you tried "Google" yet?