Parallel Laid Wire Ropes

Problems with widely used Cross Laid wire rope are that its component wire can break easily fatigued from primary and secondary bending. Also, the component wires wear each other at points where these wires cross each other. In a Parallel Laid Wire Ropes, the component wires are laid parallel to each other meeting each other along a line.

Therefore, these ropes are sometimes called Line Contact Wire Ropes.
Parallel Laid ropes, with wider area of contact between component wires, are developed to minimize wire breaks caused by internal wire wear especially when the ropes are subject to repeated bending.


The most basic strand constructions of parallel laid ropes are divided into 3 types, namely SEALE type (Symbol S), FILLER Wire type (Symbol Fi), and WARRINGTON type (Symbol W). To improve flexibility of parallel laid ropes, various combinations of 3 basic construction types have also been developed.


These are SEALE-FILLER Wire type (SFi) and WARRINGTON SEAL type (WS). Combining parallel lay construction with cross lay construction is also possible to obtain SEMI-SEALE type (SeS) and SEMI-FILLER type (SeFi), etc.