ASTM B 903 - 00 (Reapproved 2005) Standard Specification for Seamless Copper Heat Exchanger Tubes With Internal Enhancement

American Society for Testing and Materials (ASTM). Current edition approved Mar. 1, 2005. Published March 2005. Originally approved in 2000. Last previous edition approved in 2000 as B903–00. 5 p. This 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.