What type of joint is commonly used for copper pipe connections?

The solder joint is widely used for connecting copper pipes due to its strong bond and reliability in plumbing applications. In this process, a filler metal, typically a lead-free solder, is melted and drawn into the joint between two pieces of copper pipe using heat. This creates a permanent, watertight connection that is crucial for water supply lines. Solder joints can withstand a range of temperatures and pressures, making them ideal for both residential and commercial plumbing systems.

While threaded joints can be useful for joining pipes where adjustments or disassembly may be needed, they often require specific fittings and are not as common for standard copper pipe connections. Compression joints are also an option for connecting copper pipes, utilizing a mechanical method that can allow for easier disassembly, but they may not provide the same level of integrity or durability as soldered connections. Solvent-weld joints are specifically designed for PVC and CPVC pipes, making them unsuitable for copper applications. This context emphasizes the practicality and effectiveness of solder joints in plumbing.