Is it true or false that copper and red brass pipe are considered tubing similar to steel pipe for sizes up to 12"?

The classification of copper and red brass pipe as tubing rather than as pipe is fundamentally rooted in the definitions and standards set by various plumbing codes. Copper and brass primarily serve as tubing in terms of their application, as they are often used for compressed, small-diameter connections in plumbing and piping systems.

In contrast, steel pipe, while it can be used for similar applications, has a different dimensional standard and is categorized separately. The distinction lies in how the sizes and pressures are managed and how the materials are engineered. Generally, tubing refers to those materials that have specific small diameter applications and do not adhere solely to the larger dimension criteria of conventional piping.

Given this understanding, the statement that copper and red brass pipe are considered tubing similar to steel pipe for sizes up to 12" aligns with the nature of these materials and their classifications within plumbing practices. Therefore, categorizing it as false appropriately addresses the distinction in classifications, as steel pipe falls under different standards and usages compared to copper and brass, especially at larger sizes.