J16JB/T8527－1997金属密封蝶阀1997-04-15发布1998-01-01实施中华人民共和国机械工业部发布I前言1范围····················································································································································································································12引用标准·········································································································································································································13定义····················································································································································································································14型号和参数····································································································································································································25结构型式···············································································································...
