جذابیت زیبایی شناسی سفارشی astm a269
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 ...