Cableinlet for bottom elevated cover plate: the cover plate can be dismounted to drill holes and the seal rings are provided.
底部凸台盖板进线，盖板可预先拆下开孔，并配有密封圈。
2
Two types of water blocking device for the inlet of cable tunnel are developed, one is a profiled rubber seal and the other is a sealant seal.
开发了两种电缆隧道入口处堵水装置——成型橡胶件密封装置和密封膏密封装置。
3
Explosion-proof flexible connecting pipes is used in explosion-proof telephone station, explosion-proof terminal, explosion-proof loud-speaker inlet or outlet to conduit and protect the cable.