Design and Manufacture: Cast steel gate vlave to API 600(ISO 10434) or API 6D, cast stainless steel gate valve to API 603 or API 600; Forged steel gate valve to API 602
Inspection and Test: ASME B16.5(for NPS≤ 24); ASME B16.47 series B, API 605 or ASME B16.47 series A, MSS SP-44 (for NPS bigger than 24)
End flange dimension: API 598, API 600 or API 6D
BW end dimension: ASME B16.25
Socket-weld dimension: ASME B16.11
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