What is a disadvantage of using threaded pipe and screwed connections for joining lengths of piping?

Using threaded pipe and screwed connections for joining lengths of piping can indeed have the disadvantage of reducing the strength of the pipe. This reduction in strength occurs because the cutting of threads into the pipe wall can create weak points that are susceptible to cracking and failure under stress. The threading process removes some material from the pipe, thereby decreasing its overall structural integrity, especially in high-pressure applications.

Additionally, the act of threading interferes with the uniformity of the pipe's wall thickness, further compromising its ability to withstand pressures or stresses that may be applied during operation. This can lead to potential leaks or failures at the joints, which is a significant concern in systems that require high levels of reliability and safety.

While threaded connections offer advantages such as being cost-effective, quicker assembly, and easy disassembly, these benefits do not outweigh the critical issue of reduced strength when it comes to the safety and longevity of the piping system. Thus, recognizing this disadvantage is essential for maintaining the integrity of piping systems in engineering applications.