China Anti-Collision Marine Fenders from SunKai factory are high-performance marine protective equipment designed to absorb impact energy and safeguard vessels, docks, and offshore structures during berthing, mooring, and close-quarters operations. Manufactured with premium elastic rubber and multi-layer high-strength cord reinforcement via high-temperature vulcanization, these fenders deliver reliable cushioning for cargo ships, container vessels, tankers, yachts, offshore platforms, piers, and floating docks.
Available in two pressure specifications—50 kPa and 80 kPa—and a full range of standard diameters and lengths, they effectively reduce collision damage to hull steel plates, dock infrastructure, and marine equipment. Engineered to endure salt spray, humidity, and heavy impacts, our fenders meet global port safety standards and are trusted by clients across more than 30 countries.
To ensure you select the optimal Anti-Collision Marine Fender for your specific application, understanding the technical specifications is crucial. Our fenders are engineered from high-grade, wear-resistant rubber compounds, offering excellent resilience against saltwater, ozone, UV radiation, and extreme weather conditions. The design focuses on maximizing energy absorption while minimizing reaction force, providing a softer berthing experience. Below are the key parameters that define our product line's performance and suitability.
| Model Series | Standard Sizes (H x W x L or Dia. x L) mm | Energy Absorption Range (EA) | Reaction Force Range (R) | Primary Construction | Typical Application |
|---|---|---|---|---|---|
| Arch Fenders (D-Type) | 1000H x 300W x 1000L to 3000H x 1000W x 3000L | 25 kJ - 1500 kJ | 100 kN - 2500 kN | Solid Rubber with Steel Mounting Plates | Quay Walls, Terminal Docks |
| Cylindrical Fenders | Φ300 x 1000L to Φ2000 x 4000L | 15 kJ - 3500 kJ | 80 kN - 4000 kN | Solid or Foam-Filled Rubber | Ship-to-Ship, Tugboat Operations |
| Cell Fenders (Box-Type) | Custom designs based on grid pattern | 100 kJ - 5000+ kJ | 500 kN - 8000+ kN | Rubber Cells with Front Panel | Large Oil Terminals, LNG Terminals |
| Inflatable Fenders (Pneumatic) | Φ500 x 1000L to Φ3000 x 8000L | 40 kJ - 6000 kJ | Low to Moderate Reaction | Reinforced Rubber with Internal Air Pressure | Temporary Mooring, Heavy Lifting, Shipyard |
| W Fenders (Wing-Type) | Custom sizes based on curvature | 50 kJ - 2000 kJ | 150 kN - 3000 kN | Solid Rubber with Specific Profile | Smaller Berths, Ferry Terminals |
Material properties are equally critical. Our standard rubber compound typically meets or exceeds the following benchmarks, ensuring longevity and consistent performance in marine environments.
1. High Energy Absorption & Low Reaction Force
The product adopts an optimized structural design and high-performance rubber formula, with high energy absorption efficiency and low reaction force at guaranteed deflection. It can fully buffer collision impact while reducing pressure on the hull and facilities, achieving a good balance between protection effect and structural safety.
2. Dual Pneumatic Pressure Specifications
We provide two standard internal pressure schemes: 50 Kpa and 80 Kpa. The 50 Kpa model is suitable for conventional berthing and daily ship operation protection, with stable performance and high cost performance; the 80 Kpa model has higher energy absorption capacity and stronger impact resistance, suitable for large-tonnage ships, high-impact berthing, and severe sea condition scenarios.
3. Excellent Marine Environment Adaptability
Using special rubber materials resistant to salt spray, ultraviolet rays, and seawater corrosion, matched with multi-layer cord reinforcement, the Anti-Collision Marine Fenders have good aging resistance, tear resistance, and wear resistance. It can maintain stable performance in long-term wind, waves, high humidity, and salt fog environments, and is not prone to cracking, air leakage, or performance degradation.
4. Complete Size & Specification System
We have a complete size layout, with diameters ranging from 500mm to 4500mm and lengths from 1000mm to 12000mm. Each size has clear and stable performance parameters such as guaranteed energy absorption, reaction force, and hull pressure, which can meet the supporting needs of different tonnage ships, docks, and offshore projects.
5. Stable Structure & Strong Safety
Through high-temperature vulcanization molding and integrated production process, the product has good air tightness and structural integrity. It is not easy to deform or leak under long-term compression and impact, ensuring continuous and effective protection during ship berthing and operation.
6. Wide Application Scenarios
In addition to conventional port berthing, it can also be used for anti-collision protection between ships during side-by-side operations such as unloading, refueling, and supply transfer. It is also suitable for collision protection of fixed structures such as bridge piers, offshore platforms, and floating docks, with strong versatility and practicability.
1. Professional Anti-Collision Protection Effect
Compared with ordinary protective pads, our marine fenders have higher energy absorption efficiency and more reasonable reaction force distribution, which can significantly reduce the impact damage to ships and docks, effectively reduce the maintenance cost of hulls and port facilities, and improve the safety of port operation.
2. Reliable Quality & Long Service Life
From raw material selection, cord weaving, rubber mixing to finished product vulcanization and performance testing, the whole production process is strictly controlled. With proper use and maintenance, the service life can reach 10 years or even longer, with high durability and cost efficiency.
3. Flexible Adaptation to Multiple Working Conditions
Whether it is large ocean-going ships, inland waterway vessels, yachts, or offshore engineering platforms, appropriate models and sizes can be selected. The dual-pressure design further expands the application scope, adapting to different berthing speeds, ship tonnages, and sea area environments.
4. Low Maintenance & Easy Use
The product structure is firm and air tightness is stable. Daily maintenance only needs simple cleaning and regular inspection. For customers with higher demand, we also can provide foam-filled fender solutions derived from this series, which do not require inflation, have no air leakage risk, and are more suitable for all-weather unattended use.
5. Compliant with International Standards & Authoritative Certification
Products strictly implement international ship and marine engineering standards, and have passed certifications of CCS, BV, GL, ABS, LR and other IACS member classification societies, as well as ISO 9001:2008 quality management system certification, ensuring product safety performance and global circulation recognition.
6. Stable Supply & Customizable Support
Relying on our own standardized production base, we have stable production capacity to ensure timely delivery of large orders. At the same time, we can carry out targeted customization according to customer special size, pressure, installation method and other needs to meet personalized project requirements.
1. Over Decade of Deep Cultivation in Marine Protection Industry
Qingdao Sunkai has been deeply engaged in marine engineering protection for more than ten years, integrating R&D, production and technical services. We have rich practical experience in product design, material optimization and working condition adaptation, and can provide professional and reliable Anti-Collision Marine Fenders solutions.
2. Independent R&D & Self-Owned Factory Production
We have an independent R&D team composed of professionals in ocean engineering, material science and mechanical design, as well as a modern standardized production base with complete processing and testing equipment. Independent R&D and production ensure product performance iteration and quality stability, and avoid quality risks caused by outsourcing.
3. Strict Full-Process Quality Control System
From raw material incoming inspection, production process monitoring to finished product performance testing, each link is under special supervision. We implement strict quality control to ensure that each fender meets design indicators and international standards, and can withstand the test of extreme marine working conditions.
4. Factory Direct Supply with Competitive Cost Advantage
As a direct manufacturer, we eliminate intermediate links, provide customers with factory direct prices, ensure high-quality products at competitive prices, and help customers control procurement costs while ensuring protection effects.
5. Convenient Location & Efficient Global Delivery
Located in Qingdao, close to Qingdao Port, an international core logistics hub, we have convenient sea and land transportation. The processes of port loading and unloading, customs declaration and shipping are efficient, which can quickly respond to global orders, shorten delivery cycles, and ensure that customer projects are not delayed.
6. Full-Process Professional Technical Service
We provide one-stop service including pre-sales demand analysis, model selection recommendation, engineering calculation, in-sales production progress feedback, transportation coordination and on-site installation guidance, as well as after-sales maintenance guidance and warranty services. The whole process has special personnel to follow up, solving customers' application worries.
7. Global Market Recognition & Trustworthy Reputation
Our products have been exported to more than 30 countries and regions in Asia, Europe, America, Africa and Oceania, and have established long-term stable cooperative relations with many overseas ports, shipyards and engineering enterprises. Our product quality and service have been highly recognized by global customers.
1. What scenarios are Anti-Collision Marine Fenders mainly used in?
They are mainly used for port and dock berthing protection of large ships such as cargo ships, container ships and oil tankers; anti-collision between ships during side-by-side operations such as unloading, refueling and supply transfer; collision protection of fixed structures such as bridge piers, offshore platforms and floating docks; and berthing protection of small ships such as yachts and sightseeing boats.
2. What internal pressure options are available for this series of fenders?
We provide two conventional pneumatic pressure options: 50 Kpa and 80 Kpa. The 50 Kpa model is suitable for daily conventional berthing, and the 80 Kpa model is suitable for large-tonnage ships and high-impact working conditions. Customers can choose according to ship type, tonnage and operating environment.
3. How long is the service life of the fenders?
Under normal use and correct maintenance conditions, the service life of our marine anti-collision fenders can reach 10 years or even longer. Regular cleaning, avoiding sharp objects and long-term direct sunlight can effectively extend the service life.
4. How to correctly maintain the fenders daily?
After use, clean the surface mud, oil and other dirt with clean water in time; avoid using strong acid, strong alkali or corrosive cleaning agents to prevent damage to rubber materials; after cleaning, dry naturally in a cool and ventilated place, avoid long-term direct sunlight and high-temperature baking; keep away from sharp objects during storage and use to avoid scratches.
5. How to deal with slight wear on the fender surface?
For slight surface wear, first rinse the worn area with clean water; gently polish the worn area and its surrounding 2-3 cm range with fine sandpaper; use special marine rubber repair glue, apply it evenly on the worn area with a thickness slightly higher than the original surface; let it stand until it is completely cured before putting it back into use.
