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Wire Ropes

Our Wire Rope and Galvanized Aircraft Cable is made in accordance with Federal Specification RR-W-410D, meeting the dimensional and strength requirements of MIL-W-83420. We offer high quality import cable from Korea & China as well as domestic cable. Full compliance to MIL-W-83420 is available upon request.

Galvanized Cable, normally referred to as “aircraft cable”, is not intended for aircraft use. It is certified to MIL-W-83420 for dimensional and break strength only. All other testing and certifications are valid. Mill test certificates are provided upon request.


Wire rope consists of a number of strands laid helically around a supporting core. Individual strands are composed of a number of wires laid helically around a center (core) of wire or fiber. The lay of a wire rope is defined by the direction in which the strands are laid into the rope, and, also by the direction in which the wires are laid into the strands.

Regular Lay Lang Lay
Regular Lay Rope
One in which strand lay direction in the rope is opposite to the wire lay direction in the strands. Regular lay is preferred where additional resistance to crushing, rotating or distortion is required
Lang Lay Rope
One where the strand lay in the rope is the same as wire lay direction in the strands. Lang lay ropes deliver maximum flexibility and resistance to bending fatigue and abrasion.

Left Lay Right Lay
Left Lay Rope
In left lay, the path of the strands runs right to left as shown. Left lay rope may be either regular or lang lay.
Right Lay Rope
One where the path of the strands in the rope is left to right as shown. A right lay rope may be either regular or long lay.


At the center of every wire rope is a core, usually made from either wire or fiber. the core acts as foundation for the strands, keeps the rope round, and provides clearance between the rope strands for unrestricted movement.

Ropes with fiber cores have greater elasticity, but metallic cores afford greater strength and resistance to crushing.

We supply the following different kinds of wire rope cores -- Independent Wire Rope Core (IWRC), wire strand, manila fiber, sisal fiber or polypropylene. Under norrnal operating conditions a fiber core provides fully adequate support for the strands, and acts as a reservoir for the lubricant. Wire cores are usually composed of a separate 7 x 7 wire rope, termed Independent Wire Rope Core (IWRC). In any case where heavy loads or overwinding on a drum will cause excessive pressure of strands against core, the IWRC is a necessity.


Practically all wire ropes in service are subject to abrasion and bending in varying proportions. The ideal rope selection is one where resistance to abrasion and rope fatigue are built in, in approximately the same proportions as abrasion and bending occur in the use of the rope. Such selection requires careful analysis of operating conditions and rope construction to best match operating problem with the proper rope solution.

Resistance of Various Constructions to Abrasions and Bending Fatigue

(Based on Critical Outer Wire Size)
Resistance Graphic

Where constructions are indicated to have approximately equal resistance to abrasion or fatigue, other rope qualities such as flexibility and resistance to crushing and distortion may influence the selection of the rope.




Upon receiving a shipment of wire rope, close attention to the packaging is the first important measure in proper and appropriate care. If, for instance, the reel has broken or split flanges, or loose inner slaves, it is a good assumption that there could be damage to the rope as well. Always check for distortions in the outer wraps of the reel, or any conditions resulting from fork-lift abuse.

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