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PU Submarine Cable Protection
December 25, 2025
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Brief: Discover how the Casting PU Bend Restrictor provides essential overbending protection for submarine cables in offshore wind power systems. This video demonstrates the installation process on buoyancy modules outside marine riser columns, showcases the innovative snap ring connection system, and explains the technical features that ensure long-term cable integrity in demanding underwater environments.
Related Product Features:
  • Provides critical overbending protection for submarine cables at offshore wind power I-pipe and J-tube installations.
  • Features semi-annular female and male ends with snap ring/groove connection system for secure assembly.
  • Made from premium polyurethane material with excellent elasticity and corrosion resistance.
  • Offers superior resistance to water, oil, grease, and hydrolysis with excellent electrical insulating properties.
  • Designed with modular bite structure and Harvard structure module for adjustable length and easy handling.
  • Capable of withstanding 8t lateral pressure and protecting cables from anchor shocks without damaging cable cover.
  • Maintains bending radius compliance with submarine cable requirements for optimal performance.
  • Provides 50+ years durability in submarine environments with material density that adds no additional underwater weight.
FAQs:
  • What is the primary application of this polyurethane bend restrictor?
    This bend restrictor is specifically designed for submarine cable protection systems at lower ports of offshore wind power I-pipe and J-pipe installations, providing essential overbending protection when installed on buoyancy modules outside marine riser columns.
  • What material properties make this bend restrictor suitable for marine environments?
    The restrictor is made from premium polyurethane with excellent elasticity, corrosion resistance, and superior resistance to hydrolysis. It offers resistance to water, oil, and grease, has excellent electrical insulating properties, and provides 50+ years durability in submarine conditions without causing abrasion to cables.
  • How is the bend restrictor installed and what are its key structural features?
    The restrictor features semi-annular female and male ends with a snap ring/groove connection system for secure assembly. It includes auxiliary pipeline and riser column channels, with modular bite structure and Harvard structure module design that allows adjustable length and comes in 1.0m-2.0m basic units for easier handling and installation.
  • What are the technical specifications and performance capabilities?
    The restrictor has polyurethane material with ≥45MPa tensile strength, material density ≤1.2×10³kg/m³ (adding no underwater weight), 8t lateral pressure capacity, and maintains bending radius compliance with submarine cable requirements while protecting cables from anchor shocks without damaging the cable cover.
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