6x19+IWRC / 6x19S+IWRC/ 6x19W+IWRC/ 6x25Fi+IWRC / 6x26WS+IWRC / 6x37+IWRC/ 6x36WS+IWRC Steel Wire Rope

Product Overview

This series covers seven optimized configurations: 6×19-IWRC (6 strands, 19 wires each), 6×19S-IWRC (Seale lay), 6×19W-IWRC (Warrington lay), 6×25Fi-IWRC (Fill lay), 6×26WS-IWRC (Wave-Shaped strands), 6×37-IWRC (high-flexibility 37-wire strands), and 6×36WS-IWRC (Wave-Shaped 36-wire strands). Available in diameters from 10 mm to 120 mm, it offers tensile strength grades of 1770 MPa to 2160 MPa, complying with ISO 9001, CCS, and ABS standards. The IWRC core ensures minimal elongation and maximum crush resistance, making it ideal for heavy industrial lifting and offshore operations.

Product Features

IWRC Core Advantages

• High Tensile Stability: The independent wire rope core (IWRC) provides 30% higher tensile strength than fibre-core (FC) alternatives, reducing elongation under load to ≤1.2% (at rated capacity) for precise load control.

• Crush & Wear Resistance: IWRC’s rigid structure withstands lateral pressure up to 600 N/mm², preventing strand deformation during multi-layer drum winding—critical for offshore cranes and mining hoists.

Configuration-Specific Benefits

• 6×19/6×19S/6×19W-IWRC: Suited for heavy static loads (e.g., bridge cables) with 19-wire strands balancing strength and durability; Seale lay (6×19S) offers smoother surface, Warrington lay (6×19W) boosts metal fill factor.

• 6×25Fi/6×37-IWRC: 25/37-wire Fill lay designs enhance flexibility, enabling use with small-diameter pulleys (≥20× rope diameter) for dynamic lifting (e.g., mobile cranes).

• 6×26WS/6×36WS-IWRC: Wave-shaped (WS) strands reduce inter-strand friction by 25%, extending service life in high-cycle applications (e.g., port container cranes).

Applications

Offshore & Marine Industry

The 6×26WS-IWRC and 6×36WS-IWRC variants excel in offshore oil rig hoists, ship-to-shore cranes, and subsea lifting—their WS strands resist saltwater corrosion (with hot-dip galvanization) and withstand harsh marine environments.

Heavy Industrial Lifting

6×19-IWRC (10-50 mm diameter) is used in steel mill slab handling and mining hoists; 6×37-IWRC (20-80 mm) suits mobile and tower cranes for construction projects (e.g., skyscraper steel assembly, bridge construction).

FAQ

Which configuration is best for offshore cranes?

6×26WS-IWRC is recommended—its wave-shaped strands reduce abrasion from saltwater and wind, while IWRC core resists crushing during deep-sea lifting (up to 1000 m depth).

What is the minimum breaking load for a 50 mm 6×19-IWRC rope?

At 2160 MPa tensile strength, the 50 mm 6×19-IWRC rope achieves a minimum breaking load of 2150 kN, suitable for 50-100 ton static loads (with 5:1 safety factor).

Can this rope be customized for cold environments?

Yes, with low-temperature lubricant (-40°C to +80°C) and zinc-aluminum coating, it operates reliably in arctic offshore operations or cold-storage warehouse hoists.