Stockist and supplier of ASTM A249 Tubing
ASTM A249 / A249M – 16a
An ASTM designation number identifies a unique version of an ASTM standard.
A249 / A249M – 16a
A = ferrous metals;
249 = assigned sequential number
M = SI units
16 = year of original adoption (or, in the case of revision, the year of last revision)
a = indicates subsequent revision in same year