Deletion of Weld neck flange

Comment: Notability established by http://books.google.com/books?id=ep5-MDDnt3YC&pg=PA195&dq=%22Weld+neck+flange%22&hl=en&sa=X&ei=G8giVKeHNYKvyASjqoCIDA&ved=0CDIQ6AEwAA#v=onepage&q=%22Weld%20neck%20flange%22&f=false and http://books.google.com/books?id=DS_AkW9uiUgC&pg=PA59&dq=%22Weld+neck+flange%22&hl=en&sa=X&ei=G8giVKeHNYKvyASjqoCIDA&ved=0CDcQ6AEwAQ#v=onepage&q=%22Weld%20neck%20flange%22&f=false. Flange is a  so merging there is probably not a good idea. Also I don't see a promotional angle here
Stance: keep
Cited policy: Wikipedia:Summary style (WP:SUMMARY)