保温球阀

  • 网络Insulation ball valve
保温球阀保温球阀
  1. RB精小型气动保温O型切断球阀是由阿斯塔气动活塞式执行机构和夹层整体铸造阀体组成。

    QJ ( D / S ) RB O-intensive small air cut off valve insulation by pneumatic piston actuator Astana and laminated the whole cast body composition .