Flexible Foam Filled Donut Fender Floating Rotating On Piles At Lock Entrance

Flexible Foam Donut Marine Floating Fender Rotating on Piles at Lock Entrance

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.

As a professional manufacturer of foam filled donut fenders, Qingdao Luhang is supplying with this versatile donut fenders for many ports and docks around the world. Generally Foam Filled 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.

 
Structure and Constrution of Foam Dunut Fenders                                                                  
 

 
Applications of Donut Fenders                                                                                                 
 
1. Breasting dolphins
2. Corner protection
3. Guiding structures
4. Locks and dry dock entrances, corner protection, turning dolphins, areas with large tidal variations or bridge protections
5. Other monopile structures
6. Submarine jetties

 
Characteristics and Advantages of Foam Donut Fenders                                                         
 
1. Proportional load deflection curve
2. Low shear forces
3. Self-adjusting to changing water levels
4. Low installation costs
5. Generally maintenance free
6. Individual drafts can be controlled by counterweights
 
Sizes and Performance of Foam Donut Fenders                                                                     
 
The performance of the standard size Donut fenders given below represents a small selection of sizes selected to give an indication of the performance of a fender as a guide only.

 
Generally Donut fenders are designed on a project by project basis taking into consideration the required berthing energy requirement and the size of the pile the fender will be installed on. The installation pile can either be existing or if new then the final size of the fender can be determined taking into consideration movement and therefore energy absorption of the pile.
 
Pictures of our Foam Donut Fenders                                                                                        
 

 

How to install the donut fenders?                                                                                               

Installation of our Donut Fenders is very easy. The fenders will be delivered to site ready for installation on the fender piles. Once lifted over and lowered onto the fender pile the fender should be ready for use. Ballasting or trimming is not required as the fender will float at the designed level. Finally a capping feature can be placed over the top of the fender pile to finish the installation off. Maintenance of our donut fenders is very low as the internal bearings are designed to allow the fender to rotate and float up and down with the tide for a period of 25 years.

Any additional equipment installed with the donut fender such as secondary fenders or mooring points should be maintained separately.

How to Select and Order Suitable Foam Donut Fenders?                                                         
 
Generally Donut fenders are made to measure.
We have therefore given the dimensions, weight and performance (table on previous page) in groups of sizes designed to be an indication of performance only.
Precise design and finalised dimensions can be calculated with project specific pile dimensions and berthing energy/reactive load requirements.
 
Please just drop us a message here below or send us an email with your requirement for a detailed design to suit your requirements.

Guaranteed Quality of our Foam Donut Marine Fenders                                                         

Our goal is to meet the ever growing needs of our customers through the on time delivery of error free products, quality assurance is instrumental in the pursuit of our goal. Through document data and process control we can review and act, allowing to continually improve our products and processes. Internal audits of these control procedures helps to maintain a high standard of manufacturing.

The information obtained from the control procedures forms the basis of the Production Method Sheets (P.M.S.) systems helping us to train staff so specific manufacturing processes are adhered to and customer requirements are met.

Why Choose Luhang company and our pneumatic rubber fenders?                                     

1. Luhang is the first one and professional manufacturer of foam filled donut fendes with more than 20 years of developing and production experience

2. Credible company to make foam filled donut fenders with optimzied EVA foam material, enough sizes and enough thickness of SPUA coating;

3. ISO certificated with a number of patents on products

4. Dount Foam Filled Fenders have been inspected and approved by Third-Party like CCS, BV, SGS, V-Trust etc with excellent performance of high energy absorption and low force reaction and airtightness.

5. Satisfying and timely after-sale service: In case of any quality claims during the warranty period, we will carry out the Three Guarantees for repair, replacement and compensation of faulty foam filled donut fenders.

Please do not hesitate to contact us by dropping a message below or send us an email for any inquiry, which will be responed or replied immediately or at least within 24 hours.