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QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.

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City:qingdao

Country/Region:china

Contact Person:MsXiang Sun

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China Inflatable Dock Bumpers Monopile Donut Fender Foam Fenders For Boats wholesale

Inflatable Dock Bumpers Monopile Donut Fender Foam Fenders For Boats

Name: Inflatable Dock Bumpers Monopile Donut Fender Foam Fenders For Boats
Brand: DOOWIN MARINE
Price: 1 USD

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Brand Name :DOOWIN MARINE

Model Number :Inflatable Dock Bumpers

Certification :LR, BV, ABS, ect.

Place of Origin :China

MOQ :1pc

Price :$ USD 100-3200

Payment Terms :T/T,L/C

Supply Ability :100 pcs/week

Delivery Time :2~3 weeks

Packaging Details :Pallet or Plywooden Box

Product Name :Inflatable Dock Bumpers Monopile Donut Fender Foam Fenders For Boats

Service Life :10+ years

Logo :According To Te Requirement

Usuage :Ship Boat Launching And Landing

Length :5m-24m

Oem :Available

Metal Parts :Q355, SS304, SS316

Voltage :AC 220V/ DC 24V

Shape :Cylindrical

Packing :Nude Packing

Warranty :24 months

Outer Material :Natural mixed rubber

Durability :High

Feature :Tyre Cord Rubber Layer

Weight Capacity :10-50 tons

Coating :Polyurea spay

Size :Customizable

Structure :Out PE/EVA closed- foam filled fender

Out Skin :PU skin

Buoyancy :High

Specification :Dia 0.5m-4.5m, L 0.7m-9m/Customized

Lifespan :7-10 Years

Warranty Period :24 months

Temperature Range :From -60°C to 80°C

Execution Standard :ISO17357

Application :Use for harbor, offshore and ship-to-ship application

Brand :DOOWIN

Service :OEM

Inner Foam :PE/EVA closed- foam filled fender

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Inflatable Dock Bumpers Monopile Donut Fender Foam Fenders For Boats

The Donut Fender is a specialized foam fender designed to slip over stationary monopiles and float freely around a pile. This unique design maintains consistent positioning in water, even with extreme tidal fluctuations, making it an effective solution for berthing dolphins, guiding structures, and turning applications.

Constructed to float up and down single tubular piles with changing water levels, the fender freely rotates to help align or redirect vessels during berthing. When used as a turning dolphin, donut fenders guide vessels in challenging berthing situations by rotating under compression.

Key Construction Features:

100% closed-cell cross-linked foam core - Unsinkable and resistant to bursting or deflation
Internal steel core with durable UHMW bearing pads for minimal maintenance
Polyurethane elastomer skin reinforced with continuous nylon filaments for maximum durability
Customizable dimensions - Available in diameters from 1,270mm to 4,220mm with pile diameters from 610mm to 2,388mm

Floating Monopile Donut Foam Fender Features

Inflatable Dock Bumpers Monopile Donut Fender Foam Fenders For Boats

Tough Outer Skin

Donut fenders feature a rugged polyurethane elastomer outer skin designed to prevent snagging on hull protrusions or dock fittings. The thick skin is reinforced with nylon for added strength and durability.

High Energy Absorption Foam Core

The high-performance closed-cell foam core, combined with our specialized laminating process, ensures structural integrity and optimal energy absorption in every fender.

Inner Steel Tube

The central steel tube resists mooring loads while providing a stable, non-abrasive core for the foam body. This precision-engineered component is manufactured to exact specifications.

UHMW PE Pads

The low-friction UHMW bearing pads require minimal maintenance while allowing the float to rotate freely around piles and adjust to changing water levels.

Technical Specifications

Donut Outer Dia (mm)	Donut Outer Dia (ft)	Pile Dia (mm)	Pile Dia (ft)	Energy Absorption (kNm)	Reaction Force (kN)	Energy Absorption (ft-kip)	Reaction Force (kip)
1270	4.2	610	2.0	7.2	116	1.6	7.9
1450	4.8	710	2.3	9.2	131	2.1	9.0
1520	5.0	762	2.5	10.5	140	2.4	9.6
1780	5.8	914	3.0	14.1	162	3.2	11.2
1910	6.3	995	3.3	16.4	175	3.7	12.0
2030	6.7	1067	3.5	18.6	186	4.2	12.8
2210	7.3	1185	3.9	22.3	204	5.0	14.0
2290	7.5	1219	4.0	23.6	210	5.3	14.4
2490	8.2	1345	4.4	28.0	229	6.3	15.7
2540	8.3	1372	4.5	29.3	234	6.6	16.0
2790	9.2	1524	5.0	35.3	256	7.9	17.6
2970	9.8	1636	5.4	40.1	273	9.0	18.7
3050	10.0	1676	5.5	42.1	280	9.5	19.2
3300	10.8	1829	6.0	49.5	304	11.1	20.8
3450	11.3	1933	6.3	54.6	319	12.3	21.9
3530	11.6	1981	6.5	57.2	327	12.9	224
3810	12.5	2134	7.0	65.9	350	14.8	24.0
3960	13.0	2241	7.4	72.1	366	16.2	25.1
4060	13.3	2286	7.5	75.1	374	16.9	25.6
4220	13.8	2388	7.8	81.3	389	18.3	26.7

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