1.1This specification establishes the requirements for seamless, internally enhanced copper tube, in straight lengths or coils, suitable for use in refrigeration and air-conditioning products or other heat exchangers.

1.2Units-The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3Tubes for this application are manufactured from the following copper:

Copper UNS No.	Type of Metal

C12200	Phosphorized, high residual phosphorus (DHP)

1.4The following pertains to the test method described in 15.2.4 of this specification: This standard does not purport to address all the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.