I'd like to use k-series open web steel joists with metal decking for a composite concrete floor. I know about Hambro but was wondering, if people here were able to just buy k-series joists from manufacturers like Quincy Joists, Vulcraft, CMC.

Your phone is your friend, just call the manufacturers and ask.

I am using steel bar joists from Structures of USA located in Johnstown, PA.  The phone number is 814-536-8731.  The website is www.structuresofusa.com .  The prices I got for my two story house were unbeliveable.  They were half the price of my HAMBRO quote.  I am getting 89 bar joists of various sized along with all the metal decking for a little over $11,000.00

If you have any other questions, my email address is [email protected] .