1.2 The tubing sizes and thicknesses usually furnished to this specification are 1 / 4 in. (6.4 mm) in inside diameter and larger and 0.020 in. (0.51 mm) in nominal wall-thickness and heavier. 1.3 Mechanical property requirements do not apply to tubing smaller than 1 / 8 in. (3.2 mm) in inside diameter or 0.015 in. (0.38 mm) in thickness.
scope: This specification covers grades of nominal-wall-thickne ss, stainless steel tubing for general corrosion-resisting and low- or high-temperature service, as designated in Table 1. The tubing sizes and thicknesses usually furnished to this specification are 1 ⁄ 4 in. [6.4 mm] in inside diameter and larger and 0.020 in. [0.51 mm] in …
ASTM A249 and ASTM A269 Specifications indicate tube material is Austenitic Stainless Steel grades, which is wide used in stainless steel families, TP304, TP304L, TP316, TP316L, TP347, TP347H, TP321, TP321H, 904L grade is ideal material for various applications, they have some advantages that other steels do not have.
Designation: A269/A269M − 15 Standard Speci f i cation for Seamless and Welded Austenitic Stainless Steel Tubing for General Service This standard is issued under the fi xed designation A269/A269M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
ASTM A269 Seamless Stainless Steel Tubing is used for low temperature and high temperature services. These pipes could be made from austenitic steel types under electric resistant weld, electric fusion weld or seamless cold drawing mechanisms. The SA269 Tubing can also have different finishes and can be heat treated.