Compacted Strand Steel Wire Rope

Compacted strand technology compresses the wires of each strand through rollers or dies before closing, increasing the rope's metallic cross-sectional area. Aogang produces this construction as Compacted Strand Wire Rope, also referred to as Strand-Compacted Wire Rope, and compared to standard round-strand rope of the same diameter, it delivers higher breaking strength, a smoother surface, and better wear resistance.

Common Structures of Compacted Strand Wire Rope

Main spot goods structures: 6×K19S, 6×K26WS, 6×K31WS, 6×K36WS, 8×K19S, 8×K26WS, 8×K36WS, 8×K41WS, 18×K7, 35W×K7

(Note: The letter K is the national standard exclusive compacted strand identifier. It is compacted and formed on the basis of line contact S/W/WS structures, divided into two categories: ordinary compacted strand and multi-layer compacted anti-rotation. Its load-bearing performance is superior to conventional line contact steel wire rope.)

Compacted Strand vs Standard Round Strand

Compacted Forming Process 

Relying on Aogang's refined shaping production line, it is divided into three mainstream compaction processes:

Die drawing process: Mold extrusion shaping, high forming regularity, smooth surface layer, suitable for conventional heavy-load working conditions

Roller rolling process: Roller uniform speed rolling shaping, uniform steel wire deformation and smaller internal stress, better fatigue resistance and impact resistance, preferred for harsh working conditions

Forging process: High-speed reciprocating hammering around the strand body through forging equipment, applying uniform impact force to the entire steel wire strand at room temperature, causing the steel wires inside the strand to squeeze and deform each other, eliminating gaps between steel wires

Compacted Strand Wire Rope Parameters

Diameter range: Φ10–Φ60mm, full coverage of medium and large heavy-load specifications, non-standard sizes can be processed

Tensile strength: 1770MPa, 1960MPa, 2160MPa, full coverage of high-strength grades

Supporting rope cores: FC fiber core, IWRC independent steel core, WSC metal strand core, EPIWR plastic-coated steel core optional

Surface process: Bright, hot-dip galvanized/electro-galvanized optional, supports customized plastic coating and other anti-corrosion processes

Executive standards: GB/T 20118-2025, GB 33955-2024, all batches compliant for delivery

Product Performance Advantages

• Upgraded from line contact to surface contact stress, steel wire pressure-bearing area doubled, breaking force greatly increased under the same rope diameter, stronger ultimate load-bearing capacity, and sufficient safety redundancy.

• Smooth and rounded strand surface, highly stable structure, extremely strong resistance to extrusion, impact, and deformation, eliminating bulging, strand loosening, and twisting deformation problems in heavy-load operations.

• High metal filling factor, extremely low wear loss, excellent fatigue resistance under high-frequency bending conditions, overall service life far exceeds ordinary line contact steel wire rope.

• Larger contact area between rope body and drum/guide wheel, uniform pressure distribution, which can reduce wear of the steel wire rope itself and lower loss of hoisting accessories, saving equipment operation and maintenance costs.

• Extremely small gaps between strands, mud, sand, and corrosive media are difficult to penetrate. Combined with galvanizing and injection molding processes, it is suitable for humid, dusty, and corrosive outdoor harsh operating environments.

Applications of Compacted Strand Wire Rope

Mine hoisting, metallurgical blast furnace winching, large heavy-load cranes, offshore engineering operations, heavy engineering machinery and other high-strength, high-wear, strong impact, and long-term heavy-load harsh working conditions.

Customized Compacted Strand Wire Rope Services

Supports order-based customization, can adjust rope body structure, nominal diameter, tensile strength, lay direction specifications as needed; can process EPIWR injection-molded plastic-coated rope cores and outer plastic-coated anti-corrosion modified products, suitable for special equipment dedicated working conditions.

Production & QC Workflow

1. Raw wire drawn and graded to target tensile strength (1770 / 1960 / 2160 MPa).

2. Strands compacted through calibrated rollers to reach target fill factor.

3. Strands closed into rope on rope-closing machines under controlled tension.

4. Each batch of Strand-Compacted Wire Rope tested for breaking load, diameter tolerance, and surface finish.

5. Lubrication applied and rope spooled for export packaging with mill test documentation.

Packaging, Logistics and Delivery

Customized Packaging

Packaging is customized according to rope diameter, order length, and transportation distance: wooden reels, iron-wood reels, and iron reels; internally wrapped with special moisture-proof and rust-proof paper, and fully covered with PE waterproof film on the outer layer, effectively protecting against transportation collision, rope body deformation, and moisture and rust during long-distance transportation, suitable for domestic and international long-distance combined transportation.

Global Logistics

Sufficient spot stock of medium and large specifications in the factory, supporting global shipment by container sea freight and China-Europe freight trains, suitable for small-batch scattered procurement and large-batch centralized procurement orders, with strict fulfillment and on-time delivery.