Applicable standards:
STEEL CHECK VALVES, API 6D
STEEL CHECK VALVES,IS014313
STEEL VALVES,ASME B16.34
INSPECTION AND TEST, API 598/API 6D
FACE TO FACE, ASME 616.10
END FLANGES,ASME 616.5
BUTTWELDING ENDS,ASME 616.25
INSPECTION AND TEST, API 598/API 6D