Guest
Can any body tell me the difference between the different flange finish 63 aarh, 125 aarh and 250 aarh . Also please advise for for what applications/ operational conditions to specify 63 / 125 /250 finish. (Academically I would like to know 63 , 125 , 250 refers to the depth of cut or the no of serrations on flange face or any thing else )