China WCB Gate Valve: Cast Steel body material, API 602, ASME B16. 25, ASME B16.5 standard, OS/Y structure, 1/2" - 32", Wedge seal face. Detail Information Features Material: Cast Steel Seal Surface: Wedge Gate Valve Thread Position of Valve Rod: Outside Gate Valve Application: Industrial Usage, Water Industrial Usage Size: 1/2" - 32" Pressure: Medium Specifications Designed and manufactured: API 602 Flanged end: ASME B16. 25 Socket welding end: ASME B16.5 Inspection and test: API 598 Structure: B.B, OS/Y Body materials: WCB A105, F11, F22, 304, 316, 304L, 316L, alloy 20 and Monel