Pressure Rating

buy the standards and use the fomulas published in them.

Madar chod, chudmaranir put answer na janle answer desh keno

Please refer to the following "CR4 Thread" Pound Rating about ASME rating/class.

Also you can see the following "CR4 Thread" PN numbers vs. valve class in ASME standard.

Mama, kam kaj nai mone hoi. Boisha boisha mainsher question er answer dao. Jai hok tomar moto bekar mama net e boisha thakle upokar ache. Thanks mama. Tobe ebhabe boisha na thaika kam kaj kichu koro.

DEAR SIR,

IN 'DIN' STANDARD FOR PIPE SIZE GIVEN IN 'DN' AND PRESSUR IN 'PN' FOR EXAM. DN 50/60.3 PN 6,10,16,25,40SO ON. HERE DN 50 IS NOMINAL SIZE OF PIPE 60.3 IS OUT SIDE DIA. OF PIPE, PN IS PRESSURE NOMBER 6 IS 6KG /CM.SQ.,10 IS 10KG/CM.SQ.

IN 'ANSI' / 'ASME' PIPE SIZE IS GIVEN IN PSI-PRESSURE RATING-SCHDUL NO.FOR EXAM. 2" -150 lbs.(#)- SCH. STD/40. HERE 2" IS NOMINAL SIZE , OUT SIDE DIA IS 2.375"(60.325mm),PRESSURE RATING IS 150 POUND ie.150POUND/SQ.INCH SCH NO. IS WALTHICKNESS.

THANK YOU.

V.D.DEODHAR.

VDD, you are partially correct. PN rating refers to particular temperature and you need to refer the charts/ graphs to know pressure rating at your application temperature.