What color is the stripe of the thinnest walled (Type M) copper tubing?

Type M copper tubing is characterized by its thin walls and is commonly identified by a color code that helps professionals quickly recognize its specifications. The stripe associated with Type M copper tubing is red. This color designation is essential for ensuring that contractors and installers select the appropriate type of tubing for specific applications, particularly in residential plumbing systems where lighter duty materials may be sufficient.

Type M copper tubing is typically used for water distribution, where the pressure and temperature demands are not as stringent compared to other types of copper tubing, such as Type L or Type K. Being aware of this color coding allows plumbing contractors to maintain compliance with building codes and recommendations for plumbing installations, ensuring both safety and efficiency in their work.