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What Is The Role of The Weld Bead?

In the root weld bead can be polished to remove slag. The base of the root pass less than high. And at the root of the weld bead leaving a groove. To ensure that the hot weld forming beautiful, no voids exist. Root pass grinding determine whether access to the penetration bead. Brushing with a wire brush can play other bead removal of residual solder value role.

 
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