CLASClassS 150~1500 Cast Steel Globe Valve OS&Y, Rising stem, Plug DiscBolted Bonnet, Threaded or welded seat ringASTM A216 WCB, A217 WC6, A351 CF8, A351 CF8M, A351 CF3, A351 CF3M,A351 CN7M Standards compliance Design and Manufacture: ANSI B16.34, BS1873Face to face(end to end): ANSI B16.10Flanged connection: to ANSI B16.5Butt welded end: ANSI B16.25Test and inspection: API598