A red spiral line painted on a pipe identifies it as which type?

The identification of a pipe using color codes is an important aspect of safety and maintenance in various industries. A red spiral line painted on a pipe typically signifies that it is a wrought iron pipe.

Wrought iron pipes are commonly used in applications that require high strength and ductility. The red color code is often used in standards for identifying certain types of materials or the contents of the pipes, and in this case, it has been designated for wrought iron. Color coding helps workers quickly and accurately identify the type of pipe, ensuring that they can undertake maintenance, repairs, or modifications while adhering to safety standards.

In contrast, other types of pipes such as steel, PVC, and cast iron have different identification colors associated with them in industry standards, which is why this specific designation is crucial for appropriate handling and usage.