标题: BS EN 558-2017 Industrial valves — Face-to-face and centre-to-face dimensions [打印本页] 作者: cc523pate 时间: 2017-12-26 18:50:18 标题: BS EN 558-2017 Industrial valves — Face-to-face and centre-to-face dimensions
BS EN 558-2017 Industrial valves — Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems — PN and Class designated valves