All kinds of RF connector lastic wire and cable, in effect by different kinds of external mechanical forces, such as bending, buried. Stretching, twisting, positive pressure, impact and vibration, etc. All external mechanical forces, imposed on the cable will cause certain damage to the cable. Complete in order to protect the cable structure and electrical properties, improve the service life of the cable, the cable outer sheath increased armoring layer is very necessary. 
 
RF Cable Assembly armoring layer usually has two kinds, steel tape armoured and steel wire armoured. 
 
To make cable can bear radial pressure, with double steel belt, gap around the package process, called steel tape armoured cable; After cabling wrapped steel belt around on the cable conductor, then extrusion plastic sheath. The cable model representation method such as control cables, KVV22 VV22 plastic power cable, communication cable SYV22, etc. This kind of cable type index of two digits, the first: "2" means a steel tape armoured; Second: "2" PVC sheath, such as polyethylene sheath change "2" to "3". The type of cable is mainly used in bearing pressure compared commonly big occasions. For example: crossing the road, square and vibration of road, railway and etc., suitable for buried pipe laying, tunnel and wear. 
 
In order to let the cable can withstand larger axial tension, use more low carbon steel wire around the package process, referred to as the steel wire armoured cable. Cable after the steel wire according to certain pitch winding and squeeze sheathed on the conductor, said in the cable model methods such as VV32 KVV32 control cables, plastic power cable, coaxial cable HOL33, etc. Models of two Custom Cable Assembly igits, the first: "3" said fine steel wire armoured; Second: "2" PVC sheathed, "3" said polyethylene sheath. The type of cable is generally used in span is larger, laying head big occasions.



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