Replacement 50mm Pull Stubs (package of 4)

Assess surface profile depth (generated by abrasive blast cleaning) quickly and easily with these durable 3" reference discs.

Based on NACE Standard RP0178, this 5.5" x11" visual comparator illustrates six degrees of surface finishing of lap welds and six degrees of surface finishing of butt welds. Two of the four corners on the comparator replicate a 1/8" and 1/4" radius for edge/corner grinding comparisons. Made in the USA.