Mooring Fender Mooring Anti Collision Wear Resistance Structural Sturdiness
Description
The D Type Fender is a high-performance marine fender engineered for reliable vessel and dock protection in demanding maritime conditions. It is manufactured from premium elastomeric rubber with reinforced internal layers to ensure maximum energy absorption and resilience. Standard dimensions range from 250mm to 1500mm in height, with customizable lengths and hardness grades to match vessel types from small patrol boats to large container ships.
The fender’s D-shaped cross-section provides a large contact area, distributing forces evenly and minimizing localized pressure on hull surfaces. Its rubber formulation guarantees excellent wear resistance, low temperature flexibility, and long-term UV and ozone stability. Designed for repeatable high-impact applications, the D Type Fender is suitable for cargo vessels, oil tankers, passenger ferries, naval ships, and offshore service vessels. By combining durability, easy installation, and superior impact performance, the D Type Fender protects marine assets while reducing operational downtime.
Case Study
Project: Container Terminal, Dubai
At a busy container terminal handling vessels up to 30,000 DWT, the port experienced frequent fender deformation and hull scratches due to high-density docking traffic. Hongruntong Marine supplied D Type Fenders with increased width and reinforced cores for greater impact absorption.
During the first year of operation, these fenders demonstrated exceptional performance, absorbing multiple impacts daily without permanent deformation. Maintenance costs for docking operations decreased by 30%, and ship operators reported smoother docking procedures. The terminal management highlighted the fender’s modular design, which allowed easy replacement of individual segments without downtime, increasing operational continuity.
Project: Offshore Wind Farm Support Base, North Sea
In an offshore wind farm support base, service vessels frequently docked alongside floating platforms in rough sea conditions. Traditional cylindrical fenders failed to absorb lateral impacts from wave-induced vessel movement. Hongruntong Marine deployed D Type Fenders with enhanced side-wall reinforcement and high-compression rubber. The fenders successfully mitigated lateral hull impact, improved safety for crew and vessels, and reduced repair costs. Operators noted the fenders’ ability to withstand repeated impacts in cold marine conditions, proving their reliability for offshore engineering applications.
Specifications
| Place of Origin | China |
| Product Name | Dock Rubber Fender |
| Type | D Shape Type |
| Processing Service | Compression Moulded |
| Color | Black (More Colors Optional) |
| Material | Smooth NR |
| Performance | Excellent chemical and Physical Property |
| Logo | Customer's Request |
| Application | Port, Dock, Boat |
| Type | Specifications | ||||||||
| H | B | L | Holes | Q | C | h | D | d | |
| D150x150x1000 | 150 | 150 | 1000 | 3 | 350 | 150 | 25 | 40 | 24 |
| D200x200x1000 | 200 | 200 | 1000 | 3 | 353 | 150 | 35 | 55 | 30 |
| D200x200x3000 | 200 | 200 | 3000 | 8 | 400 | 100 | 35 | 55 | 30 |
| D250x250x1000 | 250 | 250 | 1000 | 3 | 350 | 150 | 35 | 60 | 30 |
| D250x250x3000 | 250 | 250 | 3000 | 8 | 400 | 100 | 35 | 60 | 30 |
| D300x300x1000 | 300 | 300 | 1000 | 3 | 350 | 150 | 40 | 65 | 32 |
| D300x300x3000 | 300 | 300 | 3000 | 8 | 400 | 100 | 40 | 65 | 32 |
| D300x360x1000 | 300 | 360 | 1000 | 3 | 350 | 150 | 40 | 65 | 32 |
| D300x360x3000 | 300 | 360 | 3000 | 8 | 400 | 100 | 40 | 65 | 40 |
| D400x400x1000 | 400 | 400 | 1000 | 3 | 400 | 150 | 55 | 80 | 32 |
| D400x400x3000 | 400 | 400 | 3000 | 8 | 400 | 100 | 55 | 80 | 40 |
| D500x500x1000 | 500 | 500 | 1000 | 3 | 350 | 150 | 90 | 97 | 45 |
| D500x500x3000 | 500 | 500 | 3000 | 8 | 400 | 100 | 90 | 97 | 45 |
| TECHNICAL DATA | ||
| PROPERTIES | TEST STANDARD | VALUES |
| Compound | - | NR / SBR |
| Density (Specific Gravity) | DIN 53505 | 1200 kg/m3 |
| Tensile Strength | DIN 53504 | ≥16 MPa |
| Elongation at Break | DIN 53504 | ≥350% |
| Tear Resistance (23°C) | DIN 53507 | ≥80 N/cm |
| Abrasion Resistance | DIN 53516 | ≤100mm3 |
| Compression Set (24hrs @ 70°C) | DIN 53517 | ≤40% |
| Ozone Resistance (ppm 20% 72hrs @ 40°C) | ISO 143/1 | No Cracking Visible By Eye |
| Change In Hardness | DIN 53504 | ≤5° |
| Change In Tensile Strength | DIN 53504 | ≥80% |
| Change In Elongation at Break | DIN 53504 | ≥80% |
| Minimum Temperature | - | -30°C |
| Maximum Temperature | - | +70°C |
Features
Enhanced Energy Absorption
The D Type Fender’s D-shaped design allows it to absorb impact energy over a wide surface area. Even under heavy berthing loads, the fender reduces hull stress and prevents structural damage. Laboratory testing confirms consistent performance over tens of thousands of compression cycles.
High Durability and Abrasion Resistance
The rubber compound used in D Type Fenders is optimized for long-term exposure to saltwater, UV light, and extreme temperatures. This ensures that the fender maintains elasticity and structural integrity for extended service life, even under harsh operational conditions.
Wide Operational Temperature Range
Our D Type Fenders perform reliably in environments ranging from -30°C to 70°C, making them suitable for cold northern ports as well as tropical regions. The fenders resist cracking, hardening, or deformation under fluctuating temperatures.
User Friendly Installation and Modularity
The flat mounting surface and lightweight modular sections simplify installation and allow for scalable configurations. Fenders can be bolted or suspended depending on application requirements. Modular design facilitates fast replacements, reducing downtime and maintenance costs.
Applications
High Volume Container Ports
Ideal for terminals with frequent vessel movements, D Type Fenders reduce hull damage during berthing and protect dock infrastructure. Suitable for container ships, bulk carriers, and feeder vessels.
Offshore Service Bases
Used in docking areas for offshore supply vessels, tugboats, and floating platforms. The fenders absorb lateral and vertical impacts, enhancing safety for crew and vessels while minimizing structural wear.
Shipyards and Repair Facilities
D Type Fenders provide temporary protection for ships during maintenance, painting, or dry docking operations. Their adaptability to hull curvature ensures even pressure distribution and prevents damage during handling.
Why Choose Hongruntong Marine
Proven Track Record in Complex Projects
Hongruntong Marine has delivered fender solutions for over 500 projects worldwide, including ports, shipyards, offshore platforms, and naval facilities. Our experience ensures reliability under diverse marine conditions.
Tailored Engineering Solutions
We offer customized D Type Fender designs that match vessel size, docking structure, and environmental factors. Clients can select dimensions, rubber hardness, mounting options, and reinforcements to achieve precise performance targets.
Advanced Material Selection and Manufacturing
Our fenders are produced using carefully selected rubber compounds and reinforced cores to provide optimal energy absorption, wear resistance, and UV stability. Rigorous quality control ensures consistent performance for every unit.
Comprehensive Technical Support
Hongruntong Marine provides guidance throughout project planning, installation, and maintenance. We offer inspection services, replacement planning, and after-sales consultation to maximize service life and operational safety.
FAQ
1. What sizes are available for D Type Fenders?
D Type Fenders are available in heights from 250mm to 1500mm, with adjustable lengths and diameters to suit different vessel sizes. Custom sizing is available upon request.
2. Can D Type Fenders handle repeated heavy impacts?
Yes, they are designed for high-frequency docking operations, retaining over 85% of their impact-absorbing capacity after 50,000 compression cycles.
3. Are these fenders suitable for cold or hot climates?
D Type Fenders maintain performance in temperatures ranging from -30°C to 70°C, making them suitable for both polar and tropical marine environments.
4. Is installation complicated for large docks?
The fenders feature a flat mounting surface and modular sections, allowing for flexible installation with standard lifting
equipment. Bolted or suspended configurations are possible.
5. Do Hongruntong D Type Fenders comply with safety standards?
Yes, our fenders meet international marine safety standards, including ISO 17357-1, ensuring reliability, repeatability, and long-term operational safety.
