Product Description:

Material Advantages:

Manufacturing Process:

1. Preliminary Preparation: Raw Material Processing and Rope Core Prefabrication
Carbon Steel Wire Rod Pretreatment
High-strength carbon steel wire rod (carbon content 0.6%-0.9%) is selected and first heated in an annealing furnace (approximately 950-1050°C) to soften the material and reduce the difficulty of subsequent wire drawing. After annealing, pickling is performed to remove surface oxide scale and prevent impurities from affecting the purity of the steel wire.
IWRC Independent Steel Rope Core Fabrication
According to IWRC structural requirements, fine steel wires are twisted into independent steel rope cores (the process is similar to "stranding - combining") to ensure that the rope core has sufficient strength to withstand the pressure of the outer strands.
The finished steel rope core is galvanized (either simultaneously with the main steel wire or separately) to ensure consistent corrosion resistance throughout the rope. 2. Main Rope Forming: Wire Drawing - Stranding - Rope Binding - Galvanizing
Wire Drawing: Producing Fine Steel Wire
Pre-treated carbon steel wire rod is drawn through a wire drawing machine through multiple sets of dies with varying apertures, ultimately producing fine steel wire (single wire diameter approximately 0.3-0.5mm) that meets the requirements of the 6X36WS structure. Drawing oil is applied during the process to maintain cooling and lubrication, ensuring a smooth and undamaged surface.
Stranding: Producing 6X36WS strands
Using the Warrington Seale (WS) composite twisting process, 36 fine steel wires are first arranged in an alternating pattern of thick and thin strands. Then, a stranding machine is used to spirally twist the strands around a central wire to produce six strands of uniform specifications. During twisting, the lay length is strictly controlled (typically 6-8 times the strand diameter) to ensure uniform tension and structural stability. Rope Closing: The strands and core are combined to form a rope.
Six twisted strands are twisted clockwise or counterclockwise around a prefabricated IWRC steel core using a rope closing machine to form a complete 6X36WS-IWRC steel wire rope. After closing, the rope is passed through a sizing die to calibrate the diameter to ensure a round and precise rope shape.
Hot-dip galvanizing: Improves corrosion resistance.
The finished wire rope is immersed in molten zinc (approximately 450°C) to form a uniform zinc layer on the surface. After galvanizing, it is cooled and passivated to enhance zinc adhesion and prevent zinc shedding during subsequent use.
III. Sling Assembly: End Treatment and Accessory Assembly
Wire Rope Cutting and End Fixing
The wire rope is cut according to customer requirements (e.g., sling length). The cut ends are secured with a special clamp to prevent strand unraveling. The ends are then pressed or braided to strengthen the connection to the grommet. Grommet Installation and Reinforcement
Insert the wear-resistant carbon steel grommet into the grommet at the end of the wire rope. Ensure the grommet and wire rope are perfectly aligned to avoid excessive play that could cause wobbling.
Use a hydraulic crimping machine to press the grommet and wire rope together, or braid and secure with a clamp to ensure the connection can withstand the same tensile force as the rope itself, eliminating the risk of loosening.

IV. Post-Processing and Quality Control
Surface Cleaning and Visual Inspection
Clean the sling surface from residual oil, zinc slag, and other impurities. Inspect the sling for an evenly distributed galvanized coating, secure the grommets, and any broken or loose strands.
Performance Testing: Ensure Lifting Safety
Breaking Tensile Test: Samples of slings are tested for their maximum tensile strength, which must comply with lifting industry standards (e.g., a 16mm diameter 6X36WS-IWRC sling typically has a breaking tensile force of at least 150kN). Fatigue testing: Simulates repeated lifting operations to test the sling's fatigue resistance and prevent hidden damage from long-term use.

Packaging and Shipment
Qualified slings are sorted by specification and packaged in moisture-proof packaging (e.g., plastic film + woven bags). Product parameters (such as structure, length, and load rating) are labeled for easy identification and storage.

Features:

1. Structural Features: Strong Load-Bearing Capacity + High Adaptability
6X36WS Composite Twist Construction
Utilizing the Warrington Seale twisting process of "6 strands with 36 wires per strand," the fine steel wires are arranged in an alternating pattern of thick and thin strands. This not only enhances the overall flexibility of the rope but also distributes the load through multiple strands. This provides greater tensile and compression resistance than conventional structural steel wire ropes, making it suitable for frequent lifting and directional changes.

IWRC Independent Steel Rope Core
The independent steel rope core (rather than a fiber core) is made of the same material as the main rope, providing rigid support and preventing deformation or strand unraveling under heavy loads. It also offers enhanced high-temperature resistance, enabling stable operation in short-term high-temperature environments (such as near welding areas), making it suitable for a wider range of industrial lifting scenarios. II. Material Characteristics: High Durability + Corrosion Resistance
Hot-Dip Galvanized Carbon Steel for Corrosion Resistance
Both the main wire rope and the core are hot-dip galvanized. The uniform and dense zinc layer effectively isolates the carbon steel base from air and moisture, making it less susceptible to rust in humid, dusty, or mildly corrosive outdoor environments. Compared to ungalvanized wire rope, its service life can be extended by over 30%.
High-Strength Carbon Steel Base
Using high-strength carbon steel with a carbon content of 0.6%-0.9%, optimized through annealing and wire drawing, the steel wire possesses high tensile strength and excellent fatigue resistance. It is less susceptible to plastic deformation or breakage during repeated lifting operations, meeting the long-term demands of medium-to-heavy loads (e.g., a 16mm gauge with a rated load of 10-15 tons). III. Safety Features: High Reliability + Easy Maintenance
Thimble End Protection
Wear-resistant carbon steel thimbles are installed at each end to protect the wire rope from direct friction with the hook and connector, preventing localized wire wear and zinc coating loss, and reducing safety hazards caused by end damage. The thimbles are securely connected to the rope body through pressing/braiding, and the breaking strength of the connection is essentially the same as that of the rope body, eliminating any weak points.

Full-Process Quality Control

Before shipment, each sling undergoes multiple quality inspections, including breaking strength testing, fatigue testing, and a complete visual inspection, to ensure its actual load-bearing capacity meets industry standards and is free of broken wires, loose strands, or zinc coating loss. No additional testing is required during use, ensuring immediate safety.

Low Maintenance Cost

The hot-dip galvanized surface requires no frequent oiling or maintenance; daily cleaning of the surface removes dust and moisture. The rope body is structurally stable and resistant to deformation from minor impacts, reducing maintenance time and costs.

Technical Parameters:

Applications:

The 6X36WS-IWRC galvanized steel rope hoisting sling, with its high load-bearing capacity, corrosion resistance, and wide adaptability, is primarily used in three major areas: industrial lifting, construction, and logistics handling. It is particularly well-suited for lifting medium-heavy, high-frequency loads.

### 1. Industrial Manufacturing (Core Requirements: High Load-Bearing Capacity + Fatigue Resistance)
- **Workshop Equipment Hoisting**: Used for installing and relocating large machine tools (such as lathes and milling machines), motors, and pressure vessels within factories. The fatigue resistance of the 6X36WS structure allows for frequent lifting, and the IWRC steel rope core can stably withstand the concentrated loads of the equipment (typically 10-30 tons) without deformation.
- **Production Line Material Transfer**: Used for lifting metal castings and semi-finished parts in automotive and machinery manufacturing production lines. The hot-dip galvanized coating protects against minor corrosion from coolants and oil stains within the workshop, minimizing the strength loss of the sling due to rust.

### 2. Construction (Core Requirements: Weather and Abrasion Resistance)
- **Construction Hoisting**: Suitable for small and medium-sized cranes on construction sites, used for lifting rebar bundles, precast concrete panels, scaffolding components, etc. The galvanized coating protects against rain and dust in outdoor environments, and the grommet design prevents localized wear on the rope by the hook.
- **Bridge/Steel Structure Installation**: Used for lifting steel beams, columns, and other components during bridge construction and factory steel structure assembly. The flexibility of the 6X36WS structure facilitates adjustment of lifting point angles, while its high strength meets heavy load requirements (e.g., 20-50 tons).

### 3. Logistics and Warehousing (Core Requirements: High Adaptability and Easy Maintenance)
- **Port/Terminal Loading and Unloading**: Suitable for small and medium-sized gantry cranes and forklifts at ports, lifting container parts and metal pallets. The galvanized coating prevents rust in the humid dock environment, reducing maintenance frequency. **Heavy Material Handling in Warehouses**: Used in large storage centers for cranes lifting heavy machinery parts and industrial raw materials (such as steel and copper ingots). The stability of the IWRC rope core ensures stable material movement during lifting, enhancing operational safety.

### IV. Other Specialty Fields (Core Requirements: Specialized Adaptation)

**Auxiliary Mining Operations**: Used for surface equipment maintenance and short-distance ore transportation in mines. Its high tensile strength withstands the heavy loads of mines, and its galvanized coating resists corrosion from mine dust and moisture.

**Stage Machinery Hoisting**: Used for hoisting lighting racks, sound equipment, and other equipment in large theaters and concert stages. The flexibility of the 6X36WS structure facilitates adjustment of stage machinery, while its safety features meet the stringent standards for stage equipment.

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Support and Services:

Pre-Sales Service
Consultation and Answering: The manufacturer or supplier will provide professional product consulting services to answer questions about the specifications, performance, and application scenarios of the 6X36WS-IWRC galvanized steel rope lifting sling, helping customers select the appropriate product model.
Customization Service: We offer custom production services based on specific customer requirements, such as length, diameter, and end fitting types, to meet individual needs.
Sample Provision: Some suppliers offer free samples to enable customers to test and evaluate product quality and performance before making large-scale purchases.

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