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PU Submarine Cable Protection
December 25, 2025
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Brief: In this video, we take a focused look at the specifications and what they mean in practice for the Offshore Wind Power PU Bend Restrictor. You will see how its innovative modular design and premium polyurethane material provide essential overbending protection for submarine cables in demanding marine environments, ensuring long-term cable integrity with features like high load bearing capacity and 50+ years durability.
Related Product Features:
  • Provides essential overbending protection for submarine cables at offshore wind power I-pipe and J-tube installations.
  • Constructed from premium polyurethane material with excellent resistance to water, oil, and grease.
  • Features a high load bearing capacity with 8t lateral pressure capacity and ≥45MPa tensile strength.
  • Designed with a modular bite structure and Harvard structure module for adjustable length and easier handling.
  • Offers superior durability with a design life of 50+ years in harsh submarine environments.
  • Incorporates a snap ring/groove connection system on semi-annular ends for secure installation.
  • Ensures no abrasion to cables under marine conditions, including ground or rock subsidence.
  • Lightweight design with material density ≤1.2×10³kg/m³, adding no significant underwater weight.
FAQs:
  • What is the primary function of the Offshore Wind Power PU Bend Restrictor?
    Its primary function is to provide essential overbending protection for submarine cables installed at the lower ports of offshore wind power I-pipe and J-tube installations, ensuring long-term cable integrity by preventing excessive bending that could damage the cables.
  • What materials and properties make this bend restrictor suitable for marine environments?
    It is made from premium polyurethane, which offers excellent resistance to water, oil, grease, and corrosion, along with superior hydrolysis resistance and insulating properties. This material also provides high elasticity, a tensile strength of ≥45MPa, and a density that doesn't add significant underwater weight, making it ideal for long-term use in submarine conditions.
  • How is the bend restrictor designed for easy installation and handling?
    The design features a modular structure with basic units ranging from 1.0m to 2.0m for easier handling. It includes a snap ring and groove connection system on its semi-annular female and male ends, allowing for secure and straightforward assembly on buoyancy modules outside marine riser columns.
  • What is the expected lifespan and load capacity of this product?
    The bend restrictor is engineered for a durability of over 50 years in submarine environments. It has a high load bearing capacity, capable of withstanding 8t of lateral pressure, and its bending radius is compliant with the specific requirements of submarine cables to ensure reliable performance.
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