What kind of steel?

[Jamespio]

I need to replace the angle iron that holds the black water tank pan in the rear frame bay in my '69 Overlander. Also, I am going to need to add some additional pieces of angle and flat steel here and there to beef up some badly rusted portions of the frame. Is there any particular type of steel I need to be looking for? And can anyone tell me the thickness of the original material I need to replace?

[68 TWind]

My black tank was held in by 4x6's so I had to do the same thing you are doing. I used 2 X 1/8 standard angle iron from a local steel supply house. If you take the exact measurements with you most places will cut if to length for you a no charge. Plenty strong to hold up the black tank. You will just have to drill holes to bolt it to the tabs on the frame. As for flat steel on the frame I would go with something a little thicker maybe 3/16 flat stock. If you are going to have a local welder fix the frame just ask him what you need to buy.