i am seeing body bonnet non standard material table of API 6A 20th th edition. Table no 5.
they mention 60k & 70K material for inegral flange but in valve body with inegral end connetion ( flange ), they mention 36k, 45k, 60 , 75 k,
so if forge or cast valve body with integral eng connection , shoduld i follow 60 k or 75 k material or i can use 36K or 45 k material ?
if 36 k & 45 k material as a forged or cast body , is there any change in integral flange length or other flange dimensions?