Which wrench is specifically designed to prevent damage to the surfaces of pipes?

A strap wrench is uniquely designed for gripping and turning objects without causing damage to their surfaces, making it particularly suited for pipework. It features a flexible strap that wraps around the item being turned, distributing the gripping force evenly and minimizing the risk of scratching or denting. This design is essential when working with delicate materials or finishes, such as pipes that may be prone to damage from traditional wrenches.

In contrast, other types of wrenches, like the box wrench, adjustable wrench, and open-end wrench, exert force directly onto the surface of the pipe. This can lead to marring or damaging the pipe, especially if they are made of softer materials or if excessive torque is applied. The strap wrench's ability to handle sensitive finishes makes it a vital tool in plumbing and other applications where preserving the integrity of the surface is crucial.