Cylindrical Buoy

Material: HDPE + EPS foam
Buoyancy: 6kg - 850kg
Thickness: 3mm - 8mm
Length: 550mm - 1200mm
Inner Diameter: 40mm
Outside Diameter: 150mm - 1000mm
Color: Orange & Customer Settings
Warranty: 12 Months
Certificate: ISO9001:2015
Cylindrical Buoy is designed for float control, safe area marking, aquaculture projects and other marine applications. These cylindrical buoys typically consist of an enclosed EPS foam core wrapped in a tough, corrosion-resistant polyurethane shell combined with high-quality steel construction. Its inner diameter is 40mm standard, but can also be customized if required.

Polyurethane foam ensures that the buoy does not absorb moisture from skin pricks, extending product life and reducing maintenance costs. The elastic material makes the buoy self-defense with high shock absorption. And the natural color polyurethane elastomer skin is resistant to abrasion and UV degradation. For extreme service environments, the polyurethane elastomer skin can be reinforced with nylon, and the protective coating has higher tear strength, making the buoy durable and virtually maintenance-free.

As a professional marine equipment supplier, Boomarine offers various types of marine buoys. And according to customer's requirements, we can provide a wide range of sizes, and can print LOGO on the buoy.


Features of Cylindrical Buoy:

- High Environmental Protection: Made of environmentally friendly food grade HDPE material.
- Impact Resistance: The outer shell is made of rotomolded plastic, and the inner layer of polyurethane foam is impact-resistant.
- Abrasion Resistant Construction: Features a durable double skin and internal plenum.
- Corrosion Resistance: The shell of the buoy is made of PE material, which is resistant to acid, alkali and seawater corrosion.
- Light Weight: In case of typhoon, the buoy will not be skewed.
- Shock-absorbing technology prevents damage to buoys or boats.
- Closed-cell foam core filling prevents loss of buoyancy when punctured.
- Steel core central strength member with load distribution structure.



cylindrical buoys
Model Inner Diameter Outside Diameter Length Thickness Buoyancy
(mm) (mm) (mm) (mm) (kg)
FT150*500 40 150 500 3 6
FT150*550 40 150 550 3 7
FT200*1000 40 200 1000 4 28
FT220*1000 40 220 1000 4 32
Wear the screw  
220 1550 5 50
The suspension loop
250 500 4 23
FT250*850 40 250 850 5 35
FT300*500 40 300 500 4 30
FT300*800 40 300 800 5 50
FT300*1000 40 300 1000 4 65
FT380*480 40 380 480 4 50
FT380*580 40 380 580 4 60
FT400*800 40 400 800 5 70
FT400*1000 40 400 1000 6 110
FT500*750 40 500 750 5 90
FT500*800 40 500 800 6 130
FT500*900 \ 500 900 6 140
FT550*950 40 550 950 6 210
FT600*760 40 600 760 5 180
FT600*1000 40 600 1000 6 220
FT600*1100 \ 600 1100 6 290
FT800*900 \ 800 900 7 420
FT800*1200 \ 800 1200 8 550
FT1000*1000 40 1000 1000 8 650
FT1000*1200 40 1000 1200 8 850

Application Cases:

Cylindrical buoy can be used as floating barrier (barrier floats) and warning floating line:

Floating Barrier Line

                                        Floating Barrier
The design of the floating barrier depends on what is to be contained, i.e. garbage, oil slicks, and also on-site conditions, i.e. high-speed rivers, deep reservoirs, etc. Typically, floating barriers consist of buoys, cables, nets, ballast, or positioning buoys. With increasing environmental awareness, floating barriers are rapidly gaining popularity around the world.

cylindrical buoy

                                               Floating Body
The integrated floating body is the main barrier to intercept the floating garbage on the water, and the connection method is series.


Cylindrical Buoy                       

                                     Warning Floating Line
Warning Floating Line can be simply used to guide, direct or demarcate non-entry areas to prevent the accidental entry of individuals or ships, etc. 

In order to achieve a better warning effect, warning floating line often inserts marker buoys with warning lights or adds luminous bands to the main buoys, which makes the warning floating Line boundary clearer and provides a clearer view.

The design and model selection of the warning floating line is determined by the functions to be achieved, the water regime of the target waters, the geographical status, etc. The location of the Warning Floating Line can be achieved either by the fixed pile on the shore or in the water, or by the use of the anchor buoy. The main body is usually composed of a cylindrical buoy or afloat, connected by a main rope cable.


Why Choose Our Cylindrical Buoys?

100% Raw Materials Imported From Korea
After years of testing and demonstration of raw material solution flow rate, resin density and resin thermal stability, we have selected 100% raw materials suitable for plastic buoys.

Advanced Rotational Moulding Process
Rotational molding is a manufacturing process used to create seamless, stress-free hollow products. Additional crafts can be added, such as filling with EPS foam.

Beautiful Appearance, High Performance
The buoy consists of an impact-resistant rotationally molded polyethylene casing. The filling material of the buoy is expanded polystyrene foam (EPS). The buoyancy capabilities of our products have been developed and tested over many years.

Customized Service
If our standard products do not meet your requirements, we are more than happy to design and manufacture products that meet your unique requirements.



Q1: Can you provide a detailed e-catalog or product details?
A: Yes. We will email the catalog and details you need.

Q2: Do you provide samples for testing?
A: Of course, welcome to buy our samples. According to our company's policy, the large order price is more favorable, and even the sample fee will be refunded.

Q3: Are small customers or small orders acceptable? What is the MOQ?
A: Of course, every customer is our god, no matter how big or small, we treat every customer as a friend and provide one-stop service.

Q4: Should I add my logo to the product?
A: Yes, we provide OEM service. But you should tell us before placing the order and send us a trademark authorization L letter.

Q5: What are your payment terms?
A: We support multiple payment methods, T/T prepayment, Western Union, etc. If you are not sure, our sales consultants can give you professional advice. Please chat with them for more information!

Q6: How to get after-sales service?
A: We can provide usage suggestions. Each product has a fixed warranty period. If any quality problem occurs within the fixed quality guarantee period, we can provide you with a new one.

Q7: How much is your shipping fee?
A: We offer ocean freight for large products, standard shipping and FedEx for most small size and weight (non-liquid) orders.