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. A copy of the NACE standard is included with your purchase. Made in the USA.
Packing list: NACE Surface Finish Weld Replica and NACE standard.
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