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PU Submarine Cable Protection
December 24, 2025
Category Connection: PU Submarine Cable Protection
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Tags:
#Undersea Cable Protection #Subsea Cable Protection #Underwater Cable Protection
Brief: This short presentation tells the story behind the design and its intended use cases. Discover how the Casting PU Polyurethane Subsea Cable Bend Restrictor provides essential protection for submarine cables in offshore wind power installations. Watch as we demonstrate its innovative snap ring connection system, modular design for easy handling, and superior performance in demanding marine environments, ensuring long-term cable integrity against overbending and external shocks.
Related Product Features:
  • Provides essential overbending protection for submarine cables at offshore wind power I-pipe and J-tube installations.
  • Features a semi-annular snap ring and groove connection system for secure assembly between male and female ends.
  • Constructed from premium polyurethane material offering excellent elasticity, corrosion resistance, and a tensile strength ≥45MPa.
  • Includes auxiliary pipeline and riser column channels, designed for installation on buoyancy modules outside marine risers.
  • Offers superior resistance to water, oil, grease, hydrolysis, and electrical insulating properties for long-term durability.
  • Designed with a modular bite structure and Harvard module design, allowing adjustable length and easier handling in 1.0m-2.0m basic units.
  • Capable of withstanding 8t lateral pressure and protects cables from anchor shocks without damaging the cable cover.
  • Ensures no abrasion under marine conditions and provides a design life of 50+ years in submarine environments.
FAQs:
  • What is the primary application of the Polyurethane Subsea Cable Bend Restrictor?
    It is designed to provide essential overbending protection for submarine cables at the lower ports of offshore wind power I-pipe and J-pipe installations, typically installed on buoyancy modules outside marine riser columns.
  • What material is used and what are its key characteristics?
    It is made from premium polyurethane, which offers excellent elasticity, corrosion resistance, superior resistance to hydrolysis and insulating properties, a tensile strength of ≥45MPa, and a density of ≤1.2×10³kg/m³ to avoid adding underwater weight.
  • How is the bend restrictor installed and what are its design features?
    It features a semi-annular design with female and male ends that connect via a snap ring and groove system. The modular design with adjustable length and basic units of 1.0m-2.0m facilitates easier handling and installation on-site.
  • What is the expected lifespan and performance in marine conditions?
    The bend restrictor is engineered for a durability of over 50 years in submarine environments, with capabilities to withstand 8t lateral pressure, protect against anchor shocks without cable damage, and resist abrasion even under conditions like ground or rock subsidence.
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