What type of joint is commonly used for connecting copper pipes?

The solder joint is commonly used for connecting copper pipes because of its ability to create a strong and durable connection. This method involves using a filler metal, typically lead-free solder, which is melted and allowed to flow into the joint between two pieces of copper pipe when heated. The resulting bond provides excellent structural integrity and resistance to high pressures, making it ideal for plumbing applications.

Additionally, solder joints offer good resistance to leaks and can withstand temperature fluctuations without compromising their strength. This is particularly important in water supply systems where maintaining a secure and leak-proof connection is crucial for system reliability. The process of soldering also allows for repairs and modifications to existing installations without needing to replace entire sections of piping.

In contrast, other types of joints like the slip joint are designed more for ease of assembly and disassembly, but may not provide the same level of strength as solder joints. PVC joints, which are used with plastic piping, are not suitable for copper. Threaded joints are often used for metals but may not be compatible with the specific requirements of copper, especially in certain plumbing applications where solder connections are preferred for their insulation and corrosion resistance capabilities.