уникальным трубопровода Co., Ltd. задвижка OS&Y, Rising stem, Flexible WedgeBolted 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, API 600, API 6D, API 603, BS1414Face to face (end to end):... взгляд деталь