​Welding pipe bending metallurgical combination of the situation

Welding pipe bending metallurgical combination of the situation: because of the bend is between solder and parent metal dispersion state of each other, would constitute an intermediary between two kinds of metals, the actual is we often say that the metal compounds, thereby obtaining the solder joint is more outstanding, so be between parent metal welding and solder, also it is necessary to render the metal chemicals.

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