Final answer:
Commercial pipe is made in standard sizes with different characteristics such as weights, colors, thicknesses, shapes, and threads. These characteristics serve various purposes and requirements.
Step-by-step explanation:
Commercial pipe is made in standard sizes that have different weights, thicknesses, shapes, colors, and threads. These characteristics provide options for different applications and requirements. For example, the weight and thickness of a pipe can determine its durability and ability to withstand pressure, while the shape and threads can be important for connecting pipes efficiently. Different colors may be used to identify the contents of the pipe or for aesthetic purposes.