(a) Test specimens required for the flattening and flaring test specified in regulations 59 (a) and 59 (b) shall be taken from the ends of finished tubes prior to up setting, swaging, expanding or other forming operations or being cut to length.  They shall be smooth on the ends and free from burrs and flaws. 

(b) If desirable and practicable, tensile test, may be carried out on full section of the tubes up to the capacity of the testing machine.  For large size tubes, the tensile test specimen shall consist of strip cut longitudinally from the tube and not flattened between the gauge marks and further heat treated. The sides of the specimen shall be parallel between gauge marks.             

(c) All specimens shall be tested at room temperature.