Basic Knowledge of Wire Ropes (Ⅰ)

Wire Part of Wire Rope

Wire rope consists of several strands laid helically in one or more layers around a core. Each strand is likewise made of metal laid together like a helix.

Definitions of symbols used

A. Nominal rope diameter in mm


B. Rope construction
   Rope class(e.g 6x19)
   Strand construction
   S    Seale
   W    Warrington
   F    Filler
   WS   Warrington-seale


C. Rope core

Fiber Core(FC)

Steel Core(WC)
IWRC     (Independent wire rope core)
WSC      (Wire strand core)
PWRC     (Parallel wire rope core)


D.  Nominal tensile grade of wire in N/MM2


E.  Wires
    U     Bright(ungalvanized)
    B     Zinc coated(galvanized)(class B)


F. Type and direction of lay
   z     Right lay (strand)
   s     left lay(strand)
   Z     Right lay(rope)
   S     Left lay(rope)
   sZ    Regular lay, right-hand
   zZ    Land lay, right-hand
   sS    Land lay, left-hand
   zS    Regular lay, left-hand




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