Class 150~600 API Gate Valve: Size: 1/2''-24'' Class 150~600 API Gate Valve: Bolted lengthen bonnet, Threaded or welded seat ring Full bore, OS&Y, Rising stem, Flexible wedge Pressure relief hole on seat Stainless trim ASTM A352 LCB, LC1, LC2, LC3, LC4 A351 CF8, A351 CF8M Standards compliance Design and Manufacture: API 600, API 6D, BS1414 Face to face (end to end): ANSI B16.10, API 6D Flanged connection: 2~~24~to ANSI B16.5 Butt welded end: ANSI B16.25 Test and inspection: API 598, API 6D. Main production includes: Valve: Cast iron/Ductile iron/Cast steel/Forged steel Valve( DIN3352 Resilient seated F4/F5 Gate valve,DIN3352 F4/F5 metal seated Gate valve,BS5163/BS5150/AWWA C509 Gate valve,API600 Gate valve,Wafer/Lug/Double flange butterfly valve,DIN/MSS Globe valve,Wafer/swing check valve,Y-strainer,JIS marine valve) Pipe fitting: carbon steel butt welding pipe fitting (elbow, straight and reducing tee, concentric and eccentric reducer, cap), forged steel pipe fitting(elbow, tee, reducer), malleable iron pipe fitting. Flange: carbon steel and stainless steel forged flange (flat flange, welding neck flange, slip on flange, blind flange).