Products and ServicesProtection Product SeriesSuper-elastic Reinforcement Rib for Offshore Engineering Cables
Super-elastic Reinforcement Rib for Offshore Engineering Cables
Centered on self-developed NDI polyurethane composite reinforcement technology, this core cable protection component is tailor-made for extreme deep-sea environments, integrating fatigue resistance, high pressure resistance and lightweight performance in one product.<br>With patented NDI polyurethane formulation and aramid fiber composite structural design, combined with intelligent molding processes, the product forms a "triple protective shield" for harsh deep-sea conditions. It thoroughly addresses long-standing industry pain points of conventional cable reinforcement ribs, including susceptibility to fracture, excessive weight and high maintenance costs, and redefines the protection standards for deep-sea cables.<br>Widely compatible with full industrial chain scenarios such as offshore oil and gas exploitation, offshore wind power and cross-sea power transmission, it delivers safe, efficient and low-carbon protection solutions for global blue energy development.
Core Features
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Ultimate Fatigue ResistanceAdopting NDI polyurethane formulation and aramid fiber composite structure, the product remains intact after 100,000 dynamic cyclic tests. Its fatigue life is 5 times that of conventional MDI-based products. After dynamic flexing test at ±5°, the strength retention rate exceeds 90%, thoroughly resolving the long-standing industry issue of dynamic cables for offshore wind farms fracturing within 2–3 years of service.Ultimate Fatigue Resistance -
Breakthrough Deep-Sea Pressure ResistanceDesigned with gradient-density polyurethane, it withstands hydrostatic pressure of 55 MPa (equivalent to pressure at 3,000 meters below sea level) with radial deflection below 2%. Paired with metal armor layers, it reduces jacket failure rate by 98%. Certified by DNV GL for subsea equipment, it operates reliably across full working temperatures from -30°C to 80°C, with a salt spray corrosion rate lower than 0.01 mm/year.Breakthrough Deep-Sea Pressure Resistance -
Revolutionary Lightweight AdvantageIts weight is only 1/4 of steel alternatives, with a linear weight under 1.5 kg/m for easy single-person handling. Offshore installation duration is cut from 3 days to 1 day, slashing hoisting costs by 70% and eliminating reliance on heavy construction machinery.Revolutionary Lightweight Advantage -
Full-Chain Technical BarriersWe hold proprietary patents for the NDI polyurethane formulation, with overall performance exceeding API Spec 17L1 standards. Intelligent molding via Borley casting machines delivers temperature control precision of ±1°C and fiber wet-out rate ≥98%, leading the industry in product consistency. Modular customizable design meets standardized requirements across diverse service scenarios.Full-Chain Technical Barriers
Performance Indicators
Material Performance Parameters
| Serial Number | Item | Index Parameters | |
|---|---|---|---|
| 1 | Tensile Strength | ≥70MPa | |
| 2 | Elongation at Break | ≥250% | |
| 3 | Retention Rate of Dynamic Fatigue Strength | ＞90%（100,000 cycles） | |
| 4 | Compression Set | ＜4%（70℃×22h） | |
| 5 | Change in Low-Temperature Elastic Modulus | ＜8%（-30℃） | |
| 6 | High-Temperature Thermal Deformation | ＜1%（80℃） | |
| 7 |
Salt Spray Corrosion Rate |
＜0.01mm/Year | |
Process & Dimensional Parameters
| Serial Number | Item | Index Parameters | |
|---|---|---|---|
| 1 | Temperature Control Precision of Molding Equipment | ±1℃ | |
| 2 | Fiber Wetting Degree | ≥98% | |
| 3 | Product Surface Roughness | ≤0.3μm | |
| 4 | Diameter Tolerance | ±0.2mm | |
| 5 | Length Tolerance | ±0.5% | |
| 6 | Maximum Custom Length per Single Piece | 100m | |
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Application Areas
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Offshore Oil & Gas DevelopmentApplicable cables: Deepwater wellhead umbilical cables, control cables
Core performance matching: 55 MPa pressure resistance and 80 kN tensile strength. It meets protection requirements for 3,000-meter deep sea and ensures stable signal and power transmission during oil and gas extraction. -
Offshore Wind PowerApplicable cables: Dynamic cables for floating wind turbines, reinforced shore landing cables
Core performance matching: 100,000-cycle fatigue resistance plus lightweight design, which mitigates risks caused by dynamic loads of wind turbines and delivers long-term stable operation. -
Cross-Sea Power TransmissionApplicable cables: 220 kV high-voltage submarine cables, tidal flat transition section cables
Core performance matching: 55 MPa pressure resistance and oil swelling resistance. It effectively withstands erosion from harsh complex marine environments and safeguards safe high-voltage power delivery.
R&D Capability
We have an interdisciplinary R&D team consisting of material science doctors, CAE simulation specialists and process engineers. We are equipped with full-chain laboratories covering raw material synthesis through deep-sea simulation testing. Our core NDI polyurethane formulation holds national patents, placing us at the forefront of the industry in technical performance.
Compatible with equipment
The annual production capacity reaches 3 million meters. Two Borley casting machines and prepolymers from world-leading brands are introduced to realize fully automatic production with a temperature control precision of ±1°C, ensuring consistent and stable product quality.
Customer Matrix
We provide services to leading industrial enterprises including CNOOC and China Energy Investment Corporation. Our products are exported to Southeast Asia and European markets, successfully breaking the monopoly of international brands in the field of deep-sea cable reinforcement ribs.
Qualifications & Certifications
The product has obtained authoritative international certifications including API 17L1, DNV GL and TÜV Rheinland, fully meeting the high-standard and high-reliability requirements of marine engineering.
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