Permalinks for pages

You can make each page a parent of one another.

To assign a parent page to a page, navigate to the page you want to assign a parent page too, then in the right sidebar you will see Page Attributes and a dropdown menu labelled Parent, whatever page you selected in that list will become its parent.

So, Solutions will be the parent of Machines and Machines will be the parent of Steel. In doing so will generate a permalink structure as follows /solutions/machines/steel, this URL will only show up for the page Steel.

Example:
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Hope that helps.