API 600 Gate Valve Design standard: API 600 Length of structure: ASME B16.10 Flange connecting end: ASME B16.5/ASME B16.47 Butt welding connecting end: ASME B16.25 Wall thickness: API 600/ASME B16.34 Inspection and test: API 598 Pressure and temperature rating: ASME B16.34 Size: NPS 2″~NPS 56″,CL150~CL2500 Material: WCB, LCB, WCC, WC6, WC9, CF8, CF8M, CF3, CF3M, A890 4A