Which are the two main types of pipes used in plumbing?

The correct answer identifies the two main types of pipes as flexible and rigid pipes, which is important to understand in plumbing applications. Flexible pipes are designed to bend and accommodate shifts or vibrations in the surrounding environment, making them useful in situations where adaptability is required, such as in tight spaces or areas with movement. Rigid pipes, on the other hand, are designed to maintain a fixed shape and are often used in applications requiring structural integrity and support, such as in the framework of plumbing systems.

Understanding these two categories is crucial for plumbers, as each type has specific individual characteristics that dictate their suitable applications. For instance, flexible pipes can be easier to install and may reduce the need for joints, while rigid pipes may be favored for their durability and strength.

In contrast, while metal and plastic pipes are vital materials in plumbing, this classification does not address the flexibility aspect. Similarly, PVC and copper pipes represent specific examples of plastic and metal categories but do not encompass the broader principles of flexibility and rigidity. Corrodible and non-corrodible pipes focus on corrosion resistance but do not directly relate to the flexibility or rigidity of the pipes, missing the broader classification necessary for understanding the types used in plumbing systems.