J965Y高压电动Y型截止阀,电动直流式截止阀

J41Y-1500LB美标自密封截止阀

J561Y高压齿轮传动焊接截止阀

J61Y-P54170V电站高压截止阀

J961Y-P54100V/140V/170V高温高压电动电站截止阀

J61Y-320高压电站截止阀带旁通阀

J661Y高温高压气动截止阀

J65Y直流式对焊截止阀,高温高压直流式对焊截止阀

J961Y-2500LB电动高压锻钢截止阀