Customized PU Coating Foam Fender Donut Fender For Jetty Protection

Donut Fenders will provide a high Energy absorption for a low reaction force as with other foam filled fendering systems. It also has the ability to rotate around a steel monopile where large tidal changes occur with no high shear forces, by the mean of internal anti-friction UHMW bearing pads, even under compression; it gives the capability of changing the direction of Energy with no need to absorb all of it, just as a pulley.

Working out the specification of a Floating Monopile Donut Fender is an important process. All aspects must be considered with a special emphasis on the design, involving simultanously consideration of both the pile and Donut Fender parameters. This as well taking into account features which should be checked to ensure an adequate design is developped : in view to ensure there is no contact between the Vessel and the pile at maximum impact loads, and to ensure a safe behaviour of the Donut Fender when in contact with the Ship during high winds or strong tidal surges.

Materials

Donut Fenders are manufactured with the same high quality raw materials as its other foam filled products such Dock Fenders and Workboat fendering Systems :

Cross-linked Poly Foam with 100 % closed cells, densities ranging from 30 Kg/m³ to 140 Kg/m³ and sometimes higher, are used to manufacture Specific Fenders, such as to propose the widest range of adequate products to consider all parameters of Energie absorption.

Composite Coating based on High Abrasion resistance Polyurethane, reinforced with multiple fibers, thread layers or polyester textiles to ensure best hydrolysis behaviour. The coating thickness may vary from 10 mm to 50 mm and more according to targeted life span and considered strengths in the scope of work.

Should Steel pile is also embedded on upper part, then Donut Fender will have to ensure the whole Berthing Energy in that case.

Donut Fender introduction

• Reinforced elastomer skin

EVA foam filled fenders have a nylon filament reinforced polyurethane skin which has excellent resistance to water , Oil , ice , strong sunlight and abrasive surfaces . It remains flexible even at -40°C (-40°F) making it suitable for Tropical or Arctic operations.

• Energy absorbing

The EVA foam filled fender absorbs impact energy so colliding vessels will not damage the buoy or themselves .

• Unsinkable foam

Only closed-cell foams are used in EVA foam filled fenders . The micro-bubble matrix of the foam means it does not absorb water even if cut or damaged. This makes EVA foam filled fenders impossible to sink.

• Permanent colors

The poly urea skin is pigmented through its entire Thickness , so colors will not wear off and will never need repainting . A wide choice of bright colors can help improve safety and identification.

Features of LUHANG Donut Fender

• Great Floating Performance , not influenced by tidal waves
• Bright Colours are available upon customer request (not all)
• No air inflation needed ( as compared to pneumatic fenders )
• High Energy Absorption
• Reasonably resistant to acid and alkali
• Good Angular Performance
• Strong & safe
• Extremely long useful life

Donut Fender specifications

LUHANG Certification

LUHANG Company has been Certificated by ISO 9001:2009, CCS, BV, SGS, GL, DNV.

Passed Environment Management System Certification, and OHSMS Certification.

LUHANG Products have been approved by CCS, BV, LR, DNV, GL, ABS, V-TRUST and other third party inspector.

LUHANG Company Information

Qingdao LuHang Marine Airbag and Fender Co., LTD,foundedin 1988, is the largest marine airbag and fender manufacturer in China.We have established long-term cooperation relationship with central enterprises, many big shipyards and ship owners, trading companies in China. We also export to Malaysia, Indonesia, Philippines, Singapore, India,Vietnam, Turkey etc. and many other countries in the world.