Solder is a metal alloy used in plumbing to join copper pipes and fittings by melting and bonding the metal surfaces together. It creates a strong, watertight seal when properly applied. Soldering is commonly used in water supply lines, heating systems, and gas lines to ensure reliable connections. Lead-free solder, typically made from tin, copper, and other metals, is used in potable water systems to comply with health and safety standards. Proper soldering techniques, including cleaning, flux application, and heating, are essential for creating durable and leak-proof joints.
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