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Safety and Reliability
Zhonghaike Pneumatic Rubber Fenders are constructed of several layers of strong tire-cord, and are thus resistant to pressure and cutting. The safety factor adopted in the design of this fender is based on accepted theory and has been proven by extensive experimentation. Operational experience over a long period of time attests to its high safety and reliability, and hydraulic pressure tests have proven the strength to be suitable. Furthermore, large-size fenders are equipped with a safety valve to release the inside air in the event of accidental over-pressure. The figure below shows data obtained from many destructive pressure tests at various percentage compressions. Such data are used to establish a basic minimum endurable pressure (MEP) curve for pneumatic rubber fenders.
Ships usually make initial contact with the dock or another ship on STS operations at an oblique angle. In the case of solid rubber fenders or foam fenders, rated reaction force and energy absorption decreases considerably at inclined compressions compared with parallel compression. In order to compensate for the decrease of energy absorption at inclined compression, it is necessary to use larger sizes in the case of solid rubber fenders or foam fenders.
Distribution of load is also comparatively even because of the molecular freedom of air and high flexibility of the multi-layered cord-reinforced rubber membrane. This makes the body of a pneumatic rubber fender more shape conformant compared to solid or foam fenders, and thus able to better distribute the load along the hull of a ship or jetty structure during inclined compression.
Adaptable to the Tide
Zhonghaike Pneumatic Rubber Fenders basically float on the water in an unrestricted
vertical plane corresponding to the tidal range and ship's vertical movement.
This means that energy absorption always takes place at the most suitable position, and
that only one fender is required per dolphin.
IP50 | Water:Air | E | R |
Φ1700 * 7200 | 65:35 | 592 | 1813 |
Φ2000 * 6000 | 65:35 | 647 | 1766 |
Φ2500 * 5500 | 65:35 | 928 | 2037 |
Φ3300 * 6500 | 55:45 | 1913 | 3196 |
Φ3300 * 10600 | 65:35 | 3120 | 5170 |
Φ4500 * 9100 | Please ask Zhonghaike | ||
Performances vary with initial pressure, water:air ratio, hull curvature and for other pressurising gasses (ie Nitrogen).Zhonghaike can guide on all special and non-standard design cases. Please ask for details. | |||
[Units: mm, kJ, kN] |
Performance Table for IP50 | |||||
SIZE*D | INTERNAL PRESSURE |
BODY WEIGHT |
SAFETY VALVE PRESSURE SETTING | TESTING PRESSURE | Please contact us directly about technical questions on submarine fenders |
mm(D)*mm(L) | Kpa | Kg | Kpa | Kpa | |
1700*7200 | 50 | 940 | 200 | ||
2000*6000 | 50 | 930 | 200 | ||
2500*5500 | 50 | 1300 | 175 | 250 | |
2500*7700 | 50 | 1854 | 175 | 250 | |
2500*9100 | 50 | 2300 | 175 | 250 | |
3300*6500 | 50 | 2200 | 175 | 250 | |
3300*8600 | 50 | 3140 | 175 | 250 | |
3300*10600 | 50 | 4200 | 175 | 250 | |
4500*9000 | 50 | 5000 | 175 | 250 | |
4500*11000 | 50 | 5600 | 175 | 250 | |
4500*12000 | 50 | 7000 | 175 | 250 | |
Performance Table for IP80 |
|||||
SIZE*D | INTERNAL PRESSURE |
BODY WEIGHT |
SAFETY VALVE PRESSURE SETTING | TESTING PRESSURE | Please contact us directly about technical questions on submarine fenders |
mm(D)*mm(L) | Kpa | Kg | Kpa | Kpa | |
1700*7200 | 80 | 1140 | 250 | ||
2000*6000 | 80 | 1100 | 250 | ||
2500*5500 | 80 | 1460 | 230 | 300 | |
2500*7700 | 80 | 2030 | 230 | 300 | |
2500*9100 | 80 | 2480 | 230 | 300 | |
3300*6500 | 80 | 2520 | 230 | 300 | |
3300*8600 | 80 | 3350 | 230 | 300 | |
3300*10600 | 80 | 4700 | 230 | 300 | |
4500*9000 | 80 | 5500 | 230 | 300 | |
4500*11000 | 80 | 6100 | 230 | 300 | |
4500*12000 | 80 | 7600 | 230 | 300 |
Lies in Qingdao, a beautiful coastal city with red tiling and green trees, blue sea and clear sky, Zhonghaike (Qingdao) Marine Engineering Technology Co., Ltd is a high-tech enterprise integrated with manufacturing, research and innovation, technical services,specialized in manufacturing marine products, such as marine rubber fender, marine airbag, navigation mark and marine buoy. All products get ISO 9001-2008 certificate and IACS quality authentication from CCS, BV, GL, ABS, LG, etc.
With strong technology base, advanced manufacturing technique, complete manufacturing facilities and well-equipped check out equipment, Zhonghaike (Qingdao) Marine Engineering Technology Co., Ltd is devoted to forge itself into a top-ranking international competitive marine products manufacturer providing high quality products and perfect service for all customers, and shoulder the responsibility of ensuring global marine safety via mutually beneficial cooperation with partners from all over the world.
FAQ
Why choose your company?
Zhonghaike insists customers requirement first since founded,supply the most professional solution to meet customer's personalized requirements. And we pay great attention to quality control, high reliability is our design principle, quality control starts from beginning, high quality parts,advanced technology and equipment are used, products are designed,manufactured and tested as ISO9001:2015 requirements. All procedures are strictly controlled and completely meet requirements of ship surveyors such as CCS, BV, RS, ABS, LR, etc.
What are Zhonghaike's hightlights?
We provide all types of fenders, such as Super Cell Fender, Super Cone Fender, Arch Fender, Cylindrical Fender, D Type Fender, etc. We also offer clients with a design of a complete fender system and installation for port facility.
What are the selling points about your products?
A superior fender product can protect both the vessel and the berthing structure berthed against, preventing any damage and save on repair costs.Our rubber fenders are manufactured in accordance with PIANC guidelines and come in a range of compounds to suit various applications. In addition, Zhonghaike can produce according to drawings and provide technical advisory services free of charge.
Is the main material of this product rubber?
Zhonghaike produce rubber fenders not only by using natural rubber, polybutadiene, and other general rubber, but also by using chlorosulfonated polyethylene, polyurethane, and other special rubber in order to meet the special requirements of users and requirements of different use environmental.