Custom PU Bend Limiter / Polyurethane Bend Restrictor Use For Submarine Cable Protection

The bending limiter provides essential submarine cable protection at lower ports of offshore wind power I-pipe and J-pipe installations. Installed on buoyancy modules outside marine riser columns, this solution ensures long-term cable integrity in demanding marine environments.

The innovative design features:

• Semi-annular female and male ends with snap ring/groove connection
• Integrated auxiliary pipeline and riser column channels
• Precision-matched components for secure installation

• Modular bite structure with adjustable length
• Harvard structure module design
• Premium polyurethane material with ≥45MPa tensile strength
• Material density ≤1.2×10³kg/m³ (minimizes underwater weight)
• 8t lateral pressure capacity
• Precision-engineered bending radius matching cable specifications

• Excellent elasticity and corrosion resistance
• Superior hydrolysis and insulation properties
• Non-abrasive surface protects cable coatings
• 50+ year durability in submarine environments
• 1.0m-2.0m basic units for easier installation
• Eliminates need for barge cranes during laying

Essential for offshore energy development projects including:

• Offshore wind power installations
• Submarine oil/gas operations
• Flexible riser systems in harsh marine environments