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Independence Tube's indented bumper tube is produced to ASTM A500 Grade B chemical and physical properties but is not intended for structural load bearing applications.
The tube is typically manufactured as a 4" square X 10 gauge to 3/16" wall tube with an indentation on one side. With the exception of the indentation, standard ASTM A500 tolerances apply.
If you are interested in the indentation on another size tube, please contact your Independence Tube Representative.
Contact us for more information.