JIS B2032-1995 Wafer type rubber-seated butterfly valves.pdf 未知 JIS B 2032-1995 Wafer type rubber-seated butterfly valves.pdf 未知 MSS SP-67-2002 中文版 蝶阀 BUTTERFLY VALVES.pdf 未知 JIS B2005-3-2-2005 Industrial-process control valves-Part 3-2：Dimensions-Face-to-face dimensions for rotary control valves except butterfly valves.pdf 未知
