|
Steam
Cracker
B 16.5 pipe flanges and flanged fittings
B 16.34 valves-flanged,threaded and welding end
B 31.1 power piping
ASME standard
Section 2 material part
Section 8 rules for construction of pressure vessels
Section 9 welding & brazing qualifications
API standard
598 valve inspection and testing
6FA fire test for valves
MSS standard
SP-6 finish for contact faces of pipe flanges and connecting
end flanges of valves and fittings
SP-25 marking system for valves,fittings,flanges and unions
SP-55 quality standard for steel castings for valves, flanges
and fittings, and other piping components (visual method)
Pressure test (API 598, ANSI B16.34)
|
class
|
seat
& shell
|
| 150
lbs |
22
bar (325 psi) |
| 300
lbs |
57
bar (825 psi) |
600
lbs
|
114
bar (1,650 psi) |
900
lbs
|
169
bar (2,450 psi) |
| 1,500
lbs |
283
bar (4,100 psi) |
|
|