Or copy this URL:
https://www.metalroofing.com/spirit/comment/8137/find/
A 9 stand machiune means that the metal goes between 9 sets of rolls to form the final panel. I am sure you can figure out what 12 stand means then. :-)
Now, the next question might be, does it make any difference? In an apples vs apples situation, you could probably expect a higher quality panel, with less chance for waviness, off of the 12 stand machine. However, poor machine adjustment, inexperienced operator, bad metal stock, poor product and/or machine design -- these things could all come into play and actually allow a better panel to be formed on the smaller machine.
5/30/2006
Isaiah Industries, Inc.
5/30/2006