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The 7×7 fine-strand steel wire rope, size 4 mm, consists of seven strands, each made of seven small steel wires twisted together. This configuration provides a balance between flexibility and tensile strength, allowing it to handle loads up to 1.5 tons under standard conditions. The 4 mm diameter, with galvanized or lubricated surface treatment, increases wear and corrosion resistance, making it suitable for industrial, construction, and marine environments. The 7×7 design also reduces fatigue from twisting and continuous movement, extending the service life up to approximately 2000 operating hours.
Engineering features of the 7×7, 4 mm wire rope include a diameter tolerance of ±0.05 mm and ultimate tensile strength between 1570 and 1650 MPa. It is ideal for applications with moderate twisting movements, such as winches, small hoists, and cable guiding systems. The high flexibility of the fine wires minimizes bending damage on sheaves and ensures adequate resistance to environmental abrasion. Using proper lubrication and periodic inspection can reduce wear and fatigue by up to 30%, ensuring safe and reliable lifting system performance.
WEBSITE: 4mm wire rope Iran
