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1.1 ,This practice covers bolt and stud bolt lengths, quantities, and thread series for pipe to pipe and pipe to valve flanged joints (Note 1) in the nominal pipe size ranges of 1/2 ,through 48-in. (12.7 through 1219-mm) diameter and pressure range of 125 through 2500 psi (0.8 through 17 ,236 kPa).
Note 1: ,This is applicable when flange of valve has the same thickness as mating flange.