Floor Pan Metal Thickness

Floor pans and cab supports 1973 79 f100 f150 f250.
Floor pan metal thickness. Thanks for any info. Using little more than a sheet of 16 gauge steel and some hand tools we recreated the floor pans including the ribs where needed. The 20 gauge thickness is in stock but 22 18 and 16 gauge material is available. Material costs were cheap less than 50 and we picked up.
And the wire feed dial is just a dial with a pointer. I know it s not 16. When the floor pan is at bare metal it s closer to 18ga. Jsp manufacturing aftermarket rear floor pan body plug 55397226aa for jeep wrangler jk 2007 2013 dodge dart pf 2012 2016 5 by jsp manufacturing 5 98 5.
On the floor pans or most sheetmetal work a is too low except if the metal is real thin. The 1 panel comes in a 36 wide sheet and lengths up to 40 long. 1974 79 super cab front splash shields 1981 91 chevy blazer suburban 1981 91 gmc jimmy suburban front steel body parts 2000 06 tahoe suburban 2000 06 yukon yukon xl. 2 composite floor deck panels are made in either 24 or 36 panel widths and is used for all concrete slabs.
I m practicing up on my mig and am trying to determine settings using er70 6s and c25. The tables in my texts and on the machine reference gauge. What thickness or gauge is standard automotive sheetmetal on american vehicles such as a door skin or fender skin. As far as the setting.