API Std 600: 1997 Steel Gate Valves - Flanged and Butt-Welding Ends, Bolted and Pressure Seal Bonnets (Eng)

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API STANDARD 600 TENTH EDITION, FEBRUARY 1997, 28p. This standard covers steel gate valves with flanged or butt-welding ends in sizes NPS 1 througn NPS
24. These sizes correspond to nominal pipe sizes in ASME B36.10M.