Steel floor assembly 

Where can I purchase this floor?

Great video gents

Where to buy this flooring?

Nice 👍

To be fair, the other video shown here shows the assembly done quite easily with only 1-guy.

Check out the supaloc and duraloc systems Australia simple and easy to use.🇦🇺👍🇺🇲

is a steel frame for a second floor safe? metal bends too. how to make sure its reinforced?

The dimples are a nice feature. But 2 guys to do this step? The material is light-weight and should be easily completed by 1-guy. If this was a shop production, you would have extra shop-rate for 2-guys. You should have self-aligning guides on the steel rim board making it very easy to complete with 1-guy. The dimples would then hold it in place for 1-person to screw and secure.

Where can I buy this ?