Porudct Name：API Cast Steel Check Valves
Design and Manufacture: Cast Steel Check Valve as per BS1868, API 6D,
API 594 Forged Steel Check Valve as per API 602.
Test and Inspect: API 598 or API 6D.
End connection: NPS=s24" as per ASME B16.5;
NPS > 24" as per ASME B16.47, MSS SP-44
Butt-welding: ASME B16.25
Socket: ASMEB16.11
Structure length: ASME 16.10
Pressure & Temperature: ASME B6.34
Wall thickness: API 600. BS 1868.