Given the applications of solder in the plumbing industry and its potential contact with drinking water, regulations call for lead-free solders. Some typical types of solder used in plumbing are tin, silver, and various alloys, all of which are specially selected to be resistant to oxidation and have the necessary low melting point. However, lead solder is still widely used, and coveted for its low melting point, in other appropriate applications. In plumbing situations where there is no contact with drinking water, such as in the transportation of wastewater, extruded lead pipes, tubes, and plumbing joints are considered a useful and safe material.
PLUMBING
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