Qingdao Luhang Marine airbag and fenderCO.,LTD engineers have developed the industry’s most customisable and versatile donut fendering solutions.
Donut fenders are designed to float up and down with the tide on a circular mono-pile either driven into the bed or mounted on the face of a quay wall. Donut fenders are suited for lock entrances, turning structures, approach channels and breasting dolphins.
Not only do Donut fenders rise and fall with the tide but due to the low friction guides located inside the fender they also rotate around the pile assisting in lining up vessels for mooring or guiding though a channel.
Construction of a Donut fender is much the same as a Foam Filled Floating Fender giving them all the ideal properties for optimal, maintenance free use. As with the foam fenders any variation of size is feasible allowing the fender to be sized to fit its purpose, they are unsinkable and can be finished in a variety of colors.
Generally Donut fenders are designed with residual buoyancy to present the berthing face above the water line but some installations have utalised separate buoyancy chambers and submerged bodies for low impacts, all variations are possible with this versatile fender.
It is also possible to install any combination of mooring points or secondary fenders to the donut fender. These can be designed bespoke for your application
Luhang Donut fender floats around a tubular pile and follows changes in the water level.
With same construction Technology as Luhang foam fender but different application and process of installation.
They are a foam filled floating fender designed to guide vessels at lock entrances and is suited for approach channels, turning structures and breasting dolphins.
Donut’s special designed internal steel membrane are fitted with low friction composite bearings which allows free movement with minimal maintenance. It’s a perfect solution for dry lock entrances, areas with large tidal variations, bridge protection, corner protection and other mono-pile structures.
Available in bright vibrant colors for better visibility, please contact TEKMARINE with your project needs.
Key features:
– Free rotation lowers shear forces
– Virtually impossible to sink, burst, or deflate
– Rapid installation
– Very low maintenance
– Automatically follows water level changes
– Low hull pressure
– Tough, non-marking skin
Donut Fender specifications
| Capacity | Standard Capacity* | | |
Donut Size D
[mm] | Max. pile dia.
[mm] | Energy
[kNm] | Reaction
[kN] |
| 1270 | 610 | 7,2 | 116 |
| 1450 | 710 | 9,2 | 131 |
| 1520 | 762 | 10,5 | 140 |
| 1780 | 914 | 14,1 | 162 |
| 1910 | 995 | 16,4 | 175 |
| 2030 | 1,067 | 18,6 | 186 |
| 2210 | 1,185 | 22,3 | 204 |
| 2290 | 1,219 | 23,6 | 210 |
| 2490 | 1,345 | 28,0 | 229 |
| 2540 | 1,372 | 29,3 | 234 |
| 2790 | 1,524 | 35,3 | 256 |
| 2790 | 1,639 | 40,1 | 273 |
| 3050 | 1,676 | 42,1 | 280 |
| 3300 | 1,829 | 49,5 | 304 |
| 3450 | 1,933 | 54,6 | 319 |
| 3530 | 1,981 | 57,2 | 327 |
| 3810 | 2,134 | 65,9 | 350 |
| 3960 | 2,241 | 72,1 | 366 |
| 4060 | 2,286 | 75,1 | 374 |
| 4220 | 2,388 | 81,3 | 389 |
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.
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Donut fenders used for lock entrances and turning structures and approach channels Images
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