QJ41M-16-DN15,QJ41M-16-DN20,QJ41M-16-DN25,QJ41M-16-DN32,QJ41M-16-DN40,不锈钢高温球阀
QT450－10球墨铸铁




6


阀杆


碳素钢、铬不锈钢




7

01/22 02:18