Which tube types are exclusively available in coils of soft copper?

The correct answer is that all of these types of copper tubes—Type K, Type L, and Type M—are available in coils of soft copper. Soft copper is commonly used in applications such as refrigeration and HVAC systems because of its flexibility and ease of installation.

Type K copper tube has the thickest wall and is primarily used for underground water lines and similar applications where high pressure or potential physical impacts are a concern. Type L, with a medium wall thickness, is used for a variety of plumbing and HVAC applications where additional durability is required but the extreme pressure needs of Type K are not necessary. Type M has the thinnest walls and is typically used for residential water systems and for the distribution of heating systems.

The availability of these tubes in coils enables easier handling and installation, especially in long runs where straight lengths of pipe might be difficult to manage. This makes them especially versatile for various installation scenarios, supporting both residential and commercial applications.