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The joint button is measured as a reliable non-destructive checking method.
Galvanized coating remains intact over the joint, enhancing corrosion resistence of the product.
Because there are no cutting edges or weld tips to maintain, tool life is commonly in excess of 300,000 joints.
Joint sizes are classified by the punch diameter. Standard sizes are: 3.0mm, 4.6mm, 5.5mm, and 6.4mm.
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