(a) Plates – For shell plates, butt straps and plates, gusset plates, end plates, furnace plates and flanging plates one tensile test piece shall be cut from each plate as rolled.

(b) Angle, tee, rivet, and stay bars.- One tensile test shall be made from each 15 or part of 15 bars rolled of each section or diameter from the same charge, but not less than two tensile tests shall be made unless the total number of bars rolled from the same charge is 8 or less than 8 and the bars of the same section or diameter, in which case one tensile test shall suffice. For round bars of 1¾ inches diameter and under, the numbers 50 and 20 shall be substituted for 15 and 8 respectively for determining the number of tests required.