DONUT FENDERS

Donut Fender

The Donut Fenders are made of polyethylene foam with a polyurethane
elastomer shell. Special donut fenders have been specifically designed
to protect the berthing pipes of the vessels. The internal structure is
heavy duty, but it allows the rotation on the support pipe.

The polyethylene foam guarantees unsinkability even in case of
damage and ensures high energy absorption with low reaction force,
which is essential to eliminate the risk of damage to the hulls. They can
be purposely created for any pipe type and any pipe diameter

  • Corner protection.
  • Turning structures.
  • Lead-in jetties.
  • Simple breasting dolphins.
  • Bridge protection.

Related Product

Pneumatic Fender

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Pneumatic fenders are marine equipment used to prevent collisions between ships, docks, and cargo ports.

Hydro- Pneumatic Fender

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The hydro-pneumatic fender is partially filled with water and air, maintain vertical position to effectively protect the hull.

Yacht Fender

pneumatic-fenders-003
Yacht fender play a role in berthing and protecting ships, mainly suitable for yachts, speedboats and small vessels.

Foam Filled Fender

foam-fenders-0001
The interior of the foam fender uses EVA foam material as the buffer medium and polyurea as the outer protective layer.

Foam Filled Fender

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Foam filled fender effectively absorb the impact energy of ships,widely used in ports, offshore and STS operations.

Fixed Rubber Fender

cell
Fixed rubber fenders are usually used to docking. it has many types:cell, cone, Cylindrical, D type, Extruded, Tugboat...

Donut Fender Characteristics

  • Freely rotates around a pile.
  • Superior energy absorb and low reaction force.
  • Compression & recovery efficiency golden ratio.
  • Extrely low hull pressure,non-marking polyurethane coating.
  • Anti-burst,anti-sinking, ultimate security.
  • Remain functions under accidental damage.
  • Excellent anti-ultraviolet light (UV) resistance.
  • Customization of fender size and shape.

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    Donut Fender Construction

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    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

    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.

    Heavy Duty Internal Structure

    Heavy Duty Chain Connecting Swivel End Fitting Type (The internal chain guarantees maximum pull-through strength, even distribution of energy and stresses.) and Heavy Duty Internal Pipe Fixed End Fitting Type optional. All fittings are constructed of top-quality steel.

    Donut Fender Construction

    7c927fa71e6
    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

    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.

    Heavy Duty Internal Structure

    Heavy Duty Chain Connecting Swivel End Fitting Type (The internal chain guarantees maximum pull-through strength, even distribution of energy and stresses.) and Heavy Duty Internal Pipe Fixed End Fitting Type optional. All fittings are constructed of top-quality steel.

    Specifications And Related Resources

    Different donut fender densities present different energy absorption reaction force properties.  

    SunHelm Marine provide Low Capacity | Standard Capacity | High Capacity | Extra High Capacity for selection.

    International Leading Donut Fender Manufacturer

    SunHelm Marine Co., Ltd. is a Chinese manufacturer specializing in maritime products. SunHelm Marine currently has several large-scale modern factories and R&D centers. SunHelm Marine mainly produces pneumatic fenders, marine rubber fenders, foam fenders, hydro-pneumatic fenders, marine airbags, marine salvage airbag, caisson moving airbags and other products.

    Based on ship industry chain, SunHelm Marine has expanded its market layout, main business involves ship mooring and berthing, marine engineering,  port construction and other fields. SunHelm provides customers with systematic, comprehensive and creative services.

    After nearly 20 years of development, product and technology applications have covered more than 80 countries and regions in 7 continents, NANHAI became the well-known brand in the world.

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    Quality Management System Qualification
    环境管理体系

    ISO 14001


    Environmental Management System Qualification
    职业健康安全

    ISO 45001


    Occupational Health & Safety Management System Qualification
    SGS证书

    SGS


    SGS Third Party Testing

    Our Products

    We are in the business of developing high performance marine rubber protections.  According to 20 years researching and developing, SunHelm Marine has abundant experiences in custom designing marine fenders and airbags to meet specific application needs. We are pride with ourselves on our quality and stand behind our products. 

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    WE GET THE ANSWERS YOU NEED

    We commitment that we will try our best to solve all the questions for our customer. We welcome and valued your advice to us. We are not only your supplier but also your key of success and your partner of business.

     

     

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