The structure of linear contact lay wire rope strands contains three kinds, which is Seale ( S ), Warrington ( W ) and Fill ( Fi ).
A、Seale ( S ): In the permutation of steel wires, the steel wires number of inner and outer layer is same. The structural formula: 1+N+N.
B、Warrington ( W ): In the permutation of steel wires, the steel wires number of outer layer is twice over inner layer, and the steel wires in outer layer array alternately by a large and a small. The structural formula: 1+N+N/N.
C、Fill ( Fi ): In the permutation of steel wires, there are finer steel wires which number is same to inner layer filled between the steel wires of inner and outer layer. The structural formula:1+N+N F+2N.
Combined by three structure above with each other, there will be various linear contact structure of compound type formed ( the way of writing is given clear indication of from centre to outer ).
The typical structure of the linear contact lay wire rope have many forms, such as 6x19S+FC(IWR、IWS)、6x19W+FC(IWR、IWS)、6x25Fi+FC(IWR、IWS)、6x26WS+FC(IWR、IWS)、6x29Fi+FC(IWR、IWS)、6x31WS+FC(IWR、IWS)、6x36WS+FC(IWR、IWS)、6x41WS+FC(IWR、IWS)、6x49WS+FC(IWR、IWS)、6x55WS+FC(IWR、IWS) and so on.