What are considered hidden weights of pipe?

Hidden weights of pipe refer to any additional mass that a pipe may carry aside from its own structural weight. This includes any materials or substances that accumulate on or within the pipe but are not immediately visible. The correct choice encompasses several factors that contribute to the overall weight and, consequently, safety considerations when handling or moving pipes.

Specifically, sludge, dirt, dust, and any fluids that have not been adequately removed can significantly add to the weight of the pipe, increasing the risk of injury during handling. Understanding this is essential for ensuring safe lifting practices and the use of appropriate equipment to manage the actual weight being handled. These hidden weights can affect the balance and center of gravity of the load, which is vital information for a pipefitter to ensure safety in operations. Therefore, recognizing and accounting for hidden weights like these is crucial in pipefitting safety procedures.