Nine out of ten times, manufacturers and industrial companies want their site visitors to call them right after they visit the site. Right or wrong, this is the primary call to action they want when discussing industrial web redesign. They do like the idea of generating leads via content downloads but that is secondary to the phone call.
To a large extent, I do understand their need for the phone call. Most industrial sales require an applications engineer or an expert to talk to the visitor to fully understand their needs before presenting a solution. The exception may be distributors using eCommerce to sell components online. Even they are moving more towards solution based selling.