Donut Fender

Your Professional Donut Fender Supplier

Qingdao Luhang Ship Airbag Fender Co., Ltd. is a high-tech enterprise that integrates scientific research and design, product development, sales, and technical services.

We are a professional manufacturer of SPUA Coated and EVA Foam Filled Fenders,Pneumatic Rubber Fenders,Solid Rubber Fenders,Marine buoy, Deep Sea Floating Material, Marine Airbag and A variety of Rubber Airbags.

Why Choose us

Excellent Team

We have an excellent R&D and technical team that has been conducting diving research for many years and currently has more than 100 national patents.

Rich Experience

We have been dedicated to the research and development of marine airbags and fenders for over 30 years.

Strong Strength

Equipped with advanced manufacturing equipment and a rigorous quality control system, we provide high-quality products and after-sales service, which have been widely recognized by both domestic and international customers.

Parameter

Pile Diameter (PD)	Outer Diame- ter of Fender (OD)	Vertical con- tact face height (H)	Energy Ab- sorption (KNm)	Reaction Force (kN)	Energy Ab- sorption (kNm)	Reaction Force (kN)
500	1000	3000	14.7	224.6	24.5	374.7
600	1200	2000	13.7	179.5	23.5	300.2
600	1200	3000	21.5	269.6	34.3	450.2
900	1800	1000	15.7	135.3	26.4	224.6
900	1800	2000	32.3	269.7	51.9	450.2
900	1800	3000	48	405.1	78.4	674.9
1250	2500	2000	61.8	374.7	100.1	624.8
1250	2500	3000	92.2	562.1	151	937.8
1250	2500	4000	123.6	750.4	201.1	1249.7
1500	3000	2000	89.2	450.2	144.2	750.4
1500	3000	3000	133.4	674.9	200.6	1125.2
1500	3000	4000	177.5	899.7	289.4	1509.7
2000	4000	2000	157.9	600.3	257	999.6
2000	4000	3000	236.4	899.5	385.5	1499.9
2000	4000	4000	315.8	1199.7	514.1	2000.3

Benefits of Donut Fender

360° Protection: They shield all sides of the pile.

Tide Friendly: They rise and fall with water levels.

Rotational Impact Control: They redirect forces and reduce damage.

Durability: The foam core won’t sink or puncture easily.

Low Maintenance: No inflation or frequent checks needed.

Donut Fender Structural Design

Heavy Duty Inner Tube
Galvanized heavy duty inner tube is the support and load-bearing structure. Its strength directly determines the service life of the fenders. Inner tube can be customized by requirements.

UHMW PE Pads
UHMW PE Pads (Ultra High Molecular Weight Polyethylene Pads) which has long-lasting, low-friction with minimal maintenance.

Closed Cell Foam Core (100%)
Due to the molecular structure of Closed Cell (Isolation of Gas), so the foam core can maintain excellent elasticity which is the basis of foam fender performance. Donut Fender utilizing only cross-linked, closed cell polyethylene.

Nylon Filament Reinforcement Layer
Donut Fender is constructed Continuous Tough and Thick Nylon Filament Reinforcement in Polyurethane skin which provides superior strength.

Corrosion Resistance Polyurethane Skin
High performance Polyurethane skin: Anti-acid, Alkali and salt corrosion, Anti-UV resistant, Non-marking which makes the Donut Fender skin extremely durable to all types of weather, forces and marine conditions.

Maintenance Matters Of Circular Fenders

Regular Inspection Schedule

We suggest setting up a regular check plan so that problems can be found before they get worse. This proactive method helps keep donut fenders working well and lasting a long time.

Cleaning and Debris Removal

When debris builds up between the fender and the pile, it can make it harder to rotate and hurt performance. We stress how important it is to regularly clean and remove trash from the fenders. These include washing them with fresh water to get rid of salt deposits that can speed up rusting.

Addressing Wear and Tear

When ships hit donut fenders, they are put under a lot of stress. It is important to check for wear and tear on a regular basis and fix any damage right away to keep their purity and performance.

Extending the Lifespan

You can make your donut fenders last a lot longer by doing things like regular checks and cleaning as part of preventative maintenance. Proper maintenance can protect this important investment. In addition, it can also ensure that it continues to perform at its best.

Additional Information

Terms Of Payment	We usually accept T/T, L/C, Paypal, Credit card, etc. If you prefer other payments terms, please feel free to discuss with us.
Shipping	We offer various shipping methods, including sea freight, air freight, and express delivery, depending on the order size and destination.

Certificate

FAQ

Q: What Is The Primary Function Of A Donut Fender In Marine Applications?

A: The primary function of a donut fender is to provide protection to vessels, docks, and other marine structures from damage caused by docking or berthing operations, absorbing energy and reducing the impact.

Q: How Do I Determine The Correct Size Of Donut Fender For My Vessel Or Dock?

A: To determine the correct size, consider factors such as the size and type of vessel, docking conditions, and the structure’s design. Consult with a marine expert or manufacturer’s guidelines to ensure the right fit.

Q: What Are The Key Benefits Of Using Donut Fenders Over Other Types Of Marine Fenders?

A: Donut fenders offer excellent energy absorption, are relatively lightweight, and easy to install. They also provide effective protection against damage from various angles. This makes them a versatile choice for marine applications.

Q: How Often Should I Inspect My Donut Fenders For Maintenance?

A: Regular inspections are crucial. We recommend inspecting your donut fenders at least every 6 months or after significant docking events. Check for signs of wear, damage, or debris accumulation.

Q: What Are The Common Issues That Can Arise During Donut Fender Installation, And How Can They Be Addressed?

A: Common issues include improper sizing, incorrect attachment, or inadequate site preparation. To resolve these issues, ensure that measurements are accurate. In addition, follow the manufacturer’s installation guidelines and assess site conditions prior to installation.

Q: Can Donut Fenders Be Used In Conjunction With Other Marine Fender Systems?

A: Yes, ring fenders can be used in combination with other fender systems. These fenders provide enhanced protection for specific docking or mooring scenarios. Consult with a marine expert to determine the best configuration for your needs.

Q: What Factors Affect The Lifespan Of A Donut Fender, And How Can It Be Extended?

A: Factors such as exposure to harsh marine environments, frequency of use, and maintenance practices impact the lifespan. Regular inspections, cleaning, and addressing wear and tear can help extend the lifespan of your donut fenders.

We're well-known as one of the leading donut fender manufacturers and suppliers in China. If you're going to buy customized donut fender, welcome to get pricelist and quotation from our factory. For price consultation, contact us.

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