Manufacturing Standard : API-525 BS 6257, Testing and Inspection Std : API 527, End Connection: Flanged(drilled &undrilled) as per Ansi B 16.5, Class -150 R.f, Body: Hydrostatic Test Pressure Twice the Set Pressure, Set Pressure: 1kgcm To 21 Kgcm,Temperature: 425 C.