Fabrikant stalen boeien

• Stabiel en betrouwbaar: Blijft stabiel in ruw water en houdt alles veilig.
• Langdurig: Gemaakt van sterke materialen, gebouwd om jaren mee te gaan.
• Gemakkelijk op te zetten en te onderhouden: Het is snel te installeren en eenvoudig te onderhouden, wat tijd en moeite bespaart.
• Veilig in gebruik: Ontworpen met veiligheid in het achterhoofd, werkt het goed in elke maritieme omgeving.
• Milieuvriendelijk: Gemaakt van milieuvriendelijke materialen die helpen de oceaan te beschermen.
• Sterke windbestendigheid: Bestand tegen harde wind zonder te kantelen, waardoor hij stabiel blijft bij slecht weer.
• Betaalbaar en praktisch: Een voordelige keuze die de klus klaart zonder hoge kosten.

Classification of Steel Mooring Buoy

Jerryborg Marine offers a wide variety of steel mooring buoys in different types and shapes. Classified by type, our steel mooring buoys can be categorized as chain through type, quick-release hook, spherical, and anchor buoys. Classified by shape, our steel mooring buoys can be categorized as cylindrical, pendant-shaped, and top-shaped. Different types and shapes of steel mooring buoys have different characteristics, structures, applicable sea states, and usage scenarios. A brief introduction and specific parameters for each category will follow. The two tables below provide a clear overview of the overall differences between the various types and shapes of steel mooring buoys.

（3）Gyro Mooring Buoy

The gyro-shaped buoy, as its name suggests, is wide at the top and narrow at the bottom, resembling a spinning top. Because a top can rotate, the gyro-shaped buoy has strong anti-rotation capabilities. This characteristic allows it to maintain stability even in areas with eddies or cross-currents. In complex sea conditions, the likelihood of eddies and currents from different directions is higher. Therefore, the gyro-shaped buoy is suitable for use in complex sea conditions.

2. Chain Through Mooring Buoy

A chain through a mooring buoy has a hole in the center of the buoy. Ropes or chains can pass through this hole. This design allows the buoy to adapt to changes in the direction of tension and distributes the force more evenly. In areas with large tidal variations, vessels move frequently with the tides. In this dynamic situation, a through-type mooring buoy is an excellent mooring choice.

（1）Chain-through Type Cylindrical Mooring Buoy

Chain-through type cylindrical mooring buoys are larger in size, offer greater stability, and have a central opening for anchor chains and ropes to pass through, making them more adaptable to water currents. Their installation and subsequent maintenance are also relatively convenient, which is why many ship systems frequently choose a chain through cylindrical mooring buoys.

3. Quick Release Hook Mooring Buoy

QRH mooring buoy stands for Quick Release Hook Mooring Buoy. These buoys feature a quick-release hook. This design allows vessels to quickly attach and detach mooring lines, making berthing very convenient and efficient. In addition, QRH mooring buoys are more robust and better able to withstand impacts during port operations.QRH mooring buoys can be divided into cylindrical type and pendant type.

（1）QRH-type Cylindrical Mooring Buoy

The QRH-type cylindrical mooring buoy has a regular shape and a quick-release design, making it less likely to jam chains or cables during use. It is suitable for most routine berthing operations.

（2）QRH-type Pendant Mooring Buoy

The QRH-type pendant mooring buoy is placed horizontally in the water and features a quick-release mechanism, ensuring a very smooth release of the rope. The pendant mooring buoy can also adapt to frequent changes in the vessel’s angle, improving the safety and efficiency of berthing operations.

（3）Selection of Quick Release Hook

Our QRH-type mooring buoys also come in four different models for quick unhooking: QRH-A, QRH-B, QRH-C, and QRH-D. Each model offers varying adaptability to different pulling forces, berthing conditions, and vessel tonnage. To enhance safety and ease of operation for mooring buoys during mooring and release operations, Jerryborg Marine will recommend the most suitable release model based on the customer’s specific requirements and circumstances.

4. Spherical Mooring Buoy

Spherical mooring buoys are simply spherical in shape. The advantage of this shape is its distributed force. Regardless of the direction of the water flow, it can withstand tension from any angle. It has no obvious limitation on the direction of force. Spherical mooring buoys are commonly used in waterways, warning areas, and places requiring positioning markings.

5. Anchor Buoy

Anchor buoys are used to mark the location of underwater anchor points. They can be used in marine aquaculture, dock mooring systems, and floating work platforms. Jerryborg Marine can provide anchor buoys suitable for different water depths and stress requirements based on the customer’s specific needs. Customers can also customize the color of the anchor buoy and other accessories, such as steel lifting rings.

Manufacturing Process of Steel Mooring Buoys

1. Welding Assembly: First, weld the steel components together to form the basic buoy body.
2. Airtightness Inspection: Conduct an airtightness test on the welded buoy body to ensure there are no leaks.
3. Polyurethane Foam Filling: Fill the buoy with polyurethane foam.
4. SA2.5 Sandblasting Finish: After removing rust, scale, and impurities from the buoy surface, sandblast the surface.
5. Marine Anti-Corrosion Coating: Apply a marine-grade anti-corrosion coating to the surface of the buoys. This prevents the buoys from rusting.
6. Film Thickness Inspection: We measure the paint film thickness to ensure the buoy’s paint film thickness meets relevant standards.
7. Marking / Label Painting: We spray markings on the buoy surface, such as company name, model number, customer logo, load-bearing capacity, etc.
8. Packaging: Cover the surface of the buoys with fabric and secure them to the pallet. This prevents the buoys from rolling and being scratched during transportation.
9. Delivery: Deliver the buoys to the customer according to the agreed logistics method.

Inspection and Testing Quality Control

1. Welding Inspection

• Visual Inspection: We first inspect the weld surface of the mooring buoy for cracks, porosity, and slag inclusions, as well as the smoothness of the transition between the weld and the base material.
• Dimensional Tolerance Inspection: In addition to visual inspection, we also use a ruler to measure the width, height, and joint misalignment of the weld to ensure they meet the requirements.

2. Non-Destructive Testing (NDT)

• Ultrasonic Testing (UT): Ultrasonic testing can detect incomplete weld penetration, cracks, and other defects.
• Radiographic Inspection (RT): Radiographic inspection uses X-rays to examine the weld. We generally use radiographic inspection for welds in critical stress areas. This allows for efficient detection of internal defects in key areas.
• Magnetic Particle Testing (MT): Magnetic particle testing is mainly used for surface crack detection. Magnetic powder is sprayed onto the surface of the buoy. If there is a crack on the buoy surface, the magnetic powder will accumulate at the crack, enabling the precise location of the crack.

3. Airtightness Testing

Buoys need to float at sea, so airtightness is very important. We will conduct gas or watertightness tests on the buoy. This allows us to check for leaks in the buoy’s welds and overall structure.

4. Performance Testing

• Central Shaft Tensile Strength Test: We conduct a tensile strength test on the core shaft of the buoy. This test ensures that the buoy’s core shaft meets the customer’s required mooring load.
• Load Capacity and Buoyancy Test: We test the buoy’s load capacity and buoyancy. This verifies whether the buoy’s stability, floating state, and safe buoyancy in water meet the customer’s requirements.
• Salt Spray Corrosion Test: To test the buoy’s resistance to rust and corrosion in a real marine environment, we also conduct a salt spray test.