CQ 螺纹球阀 CQ Thread Ball Valves L 形三通式 L-pattern three way T 形三通式 T-pattern three way 安全阀 Safety valve 暗杆闸阀 Inside screw nonrising stem type gate valve 百叶窗; 闸板 shutter 百叶窗式挡板 louver damper 摆阀式活塞泵 swing gate piston pump 保温式 S...

时间:2025-02-09 15:17栏目:行业资料