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ระบบมาตรฐานสากล
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ASME U,S,R,PP STAMP

U – Stamp
(ASME Boiler and Pressure Vessel Code follow ASME Sec.VIII )
            - Unfilled Pressure Vessel 
            Scope of Work: Manufacture of pressure vessel at the above location and field sited controller by the above location (This authorization does note cover impregnated graphite)
S – Stamp (ASME Power Boiler Code Follow ASME Sec.I )
            - Power Boiler.
            Scope of Work: Manufacture and assembly power boilers at the above location and field site controller by the above location.
R – Stamp (National Board)
            - Repairs and / or Alteration.
            Scope of Work: Matallic repairs and / or alteration at the above location extended for filed repairs and / or Alteration controller by this location.
PP – Stamp (ASME Power Piping Code Follow ASME Sec.I)
            - Power Piping
            Scope of Work: Fabrication and assembly pressure piping at the above location and filed sites controller by the above location.