Millifactories

MAXIMUM SUSTAINED WORK & FIELD TEST PRESSURE AS PER BSS 3505

TABLE-1

WORKING PRESSURE   TEST PRESSURE
Class bar kgf / cm 2 lbf / in 2 bar kgf / cm 2 lbf / in 2

B

 6 6.12 87 9 7.18 130
C 9 9.18 130 14 13.77 195
D 12 12.25 173 18 18.38 259
E 15 15.3 217 23 22.95 325

The maximum admissible service pressure are calculated from known data on the basis of a life of at least 50 years of continues operation and a safety factor 1 greater than 2

TABLE 2

Class of pipe Maximum 1 h failure pressure
6 bar Class - B 21.6 bar
9 bar Class - C 32.4 bar
12 bar Class - D 43.2 bar
15 bar Class - E 54.0 bar

Short-term hydrostatic pressure resistance at 20o C Maximum 1 hour failure pressure