18×7 Class Round Strand Wire Rope

18×7 Class Round Strand Wire Rope

Product Introduction:

Engineered for critical maritime lifting and haulage, our 18×7 Class Round Strand Wire Rope represents a specialized, high-performance cable solution. Unlike traditional 6-strand ropes, the 18-strand construction is specifically designed to deliver exceptional anti-rotation (non-spin) properties, effectively minimizing the risk of twisting, bird-caging, and load spinning during complex lifting operations. This makes it the premium choice for single-line crane systems and high-speed deck winches operating in demanding shipboard environments.

Construction & Core Configurations:

The 18×7 configuration consists of 18 strands, each made of 7 individual wires, delicately spiraled around a core. This high-strand-count structure offers a uniquely balanced combination of outstanding bending flexibility and robust fatigue resistance. Based on your requirements, this rope class is available in two distinct core designs:

*18×7 + FC (Fibre Core): Featuring a high-quality natural or synthetic fiber core, this variant provides superior pliability and excellent shock-absorption capabilities. With a lower net weight compared to its steel-core counterpart, it is easier to handle and spool, making it ideal for general marine cargo handling and lighter-duty tow lines.

*18×7 + IWS (Independent Wire Strand Core): Built with an independent 7-wire steel strand at its center, this configuration significantly enhances resistance to radial compression and crushing. The IWS core ensures structural integrity when the rope is subjected to heavy multi-layer winding on winch drums, making it highly durable for heavy-duty port crane operations and offshore platform haulage.

Technical Specifications：

Primary Marine & Industrial Applications:

Due to its inherent anti-twist nature and high flexibility, this 18×7 class is predominantly used in:

*Shipboard and dock-side crane hoisting (single-part lifting).

*Tugboat towing and salvage haulage.

*Offshore crane booms and deep-sea platform rigging.

*Multi-layer winch systems where kink-resistance is critical.

*High-speed lifting elevators and gantry cranes in heavy maritime ports.

Operational Advantages & Maintenance:

The 18×7 design offers a significantly extended fatigue life when operating over smaller sheaves and drums. For optimum safety and lifespan, we recommend regular inspections for external wear. When using the +IWS variant, special attention should be paid to maintaining correct tension to prevent core slippage, and a regular lubrication schedule is mandatory to protect both the outer strands and internal steel core from harsh saltwater corrosion.