Chain Support Buoys
Hongruntong Marine’s chain support buoy is designed to support chafe chains and reduce tension in SPM systems. It provides reliable buoyancy and protects chains from seabed abrasion.
Hongruntong Marine’s Chain Support Buoy is engineered to provide superior buoyancy and protection for mooring and anchor chains in harsh marine environments. Featuring an advanced dual-layer construction – a rugged polyurethane (PU) outer shell encapsulating high-performance closed-cell foam – this buoy delivers unmatched durability, corrosion resistance, and long-term buoyancy stability. Ideal for offshore rigs, floating docks, ship mooring systems, and aquaculture installations.
Characteristics
► Durable material
► Polyurethane elastomer
► Strengthen skin tear resistance
► Even if the skin is severely damaged, it hardly sinks
► High impact energy absorption
► Can be customized according to requirements
Applications
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Offshore oil & gas mooring systems
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Port and harbor anchor chains
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Floating docks, pontoons, and aquaculture cages
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Shipyard and marina chain management
Dimensions
| Model | Buoyancy [kg] |
Diameter [mm] |
Length [mm] |
Weight [kg] |
| HM-CSBS1000 | 1,000 | 1,080 | 1,550 | 375 |
| HM-CSBS1250 | 1,250 | 1,160 | 1,550 | 380 |
| HM-CSBS1500 | 1,500 | 1,130 | 2,000 | 445 |
| HM-CSBS1700 | 1,700 | 1,180 | 2,000 | 455 |
| HM-CSBS1750 | 1,750 | 1,190 | 2,000 | 460 |
| HM-CSBS1850 | 1,850 | 1,230 | 2,000 | 470 |
| HM-CSBS2000 | 2,000 | 1,290 | 2,000 | 490 |
| HM-CSBS2250 | 2,250 | 1,340 | 2,000 | 500 |
| HM-CSBS2500 | 2,500 | 1,400 | 2,000 | 515 |
| HM-CSBS2800 | 2,800 | 1,510 | 2,000 | 535 |
| HM-CSBS3000 | 3,000 | 1,520 | 2,000 | 550 |
| HM-CSBS3200 | 3,200 | 1,560 | 2,000 | 560 |
| HM-CSBS3500 | 3,500 | 1,630 | 2,000 | 580 |
| HM-CSBS3900 | 3,900 | 1,710 | 2,000 | 610 |
| Model | Buoyancy [kg] |
Diameter [mm] |
Length [mm] |
Weight [kg] |
| HM-CSBT1500 | 1,500 | 1,195 | 2,000 | 520 |
| HM-CSBT1700 | 1,700 | 1,260 | 2,000 | 545 |
| HM-CSBT2000 | 2,000 | 1,325 | 2,000 | 560 |
| HM-CSBT2250 | 2,250 | 1,395 | 2,000 | 580 |
| HM-CSBT2500 | 2,500 | 1,450 | 2,000 | 610 |
| HM-CSBT2750 | 2,750 | 1,505 | 2,000 | 630 |
| HM-CSBT3000 | 3,000 | 1,565 | 2,000 | 658 |
| HM-CSBT3500 | 3,500 | 1,680 | 2,000 | 750 |
| HM-CSBT4500 | 4,500 | 1,900 | 2,000 | 880 |
Detailed Photos
Why Choose Hongruntong Chain Support Buoys?
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Proven Experience – Over 230 years specializing in marine and offshore solutions.
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High-Quality Materials – EVA/PE foam, PU elastomer, and reinforced steel for maximum strength.
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Excellent Performance – Superior buoyancy, impact resistance, and anti-corrosion properties.
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Customizable Solutions – Available in various sizes and specifications for different projects.
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Global Supply & Service – Fast delivery, technical support, and long-term after-sales guarantee.
FAQ – Chain Support Buoys
Q1: What is the function of a chain support buoy?
A1: Chain support buoys provide buoyancy to subsea chains and mooring lines, reducing seabed contact, minimizing abrasion, and extending the service life of the system.
Q2: What materials are Hongruntong buoys made of?
A2: Our buoys are constructed from high-density EVA/PE foam with a durable polyurethane (PU) outer skin, reinforced with internal steel structures for maximum strength.
Q3: Can chain support buoys be customized?
A3: Yes, we offer customized buoyancy, sizes, and chain passage diameters according to project requirements.
Q4: How long is the service life of Hongruntong chain support buoys?
A4: Typically more than 10 years under normal marine operating conditions, with minimal maintenance required.
Q5: Do you provide certifications?
A5: Yes, we supply buoys in compliance with international standards, and third-party inspection certificates (ABS, DNV, RMRS, etc.) can be provided upon request.
