Tube or pipe roller or something else all together

Possibly tube or pipe rollers but I am not really sure. The tops are 5 1/16" long and the bottoms are 4 1/4" long. The sides are 2 1/8". The thickness is 1/2". The wheels are 2 1/2" in diameter and 3/8" thick. The bolts on top are 3 3/8" apart and the bolts are 9/16". I would like to know what these are and age? Thank you. Rob

 

not wheels for moving something heavy..??

 

These are not precise enough to be balancing wheels which look similar. They are for welding pipe. They allow the pipe to be rotated to keep the welding point on top as it progresses around the pipe. They make much fancier ones today: https://weldplus.com/product/welding-accessories/lj-welding-4000-lb-pipe-roller-stand/

Dennis

 

Totally impressed and makes a lot of sense. Another forum, who I also appreciated their knowledge and assistance, could not figure out what they were for me. The owner of these was into black smithing, oil business and logging business as some point. Yes, these are very crude and simple made and vintage and most likely worthless. Thank you for you and everyones help. Rob

 

To the right person for the right job they are as useful today as they were back then and priceless!

 

What decade do you think these welding pipe rollers are from? Thank you. Rob