Hongruntong Marine LLC.
| Payment Terms | L/C,T/T,D/A,D/P,Western Union,MoneyGram |
| Supply Ability | 1883 Pcs Per Month |
| Delivery Time | 5-7 Work Days |
| Packaging Details | Wooden Pallets, Wooden Box |
| Product Name | Buoyancy Bags |
| Reinforcement | Nylon Fabric |
| Feature | Durable Construction, Easy Filling and Emptying |
| Lifting Capacity | 200kg to 50 tons |
| Thickness | 0.4mm-2.5mm, or as Request |
| Valve | Inflation and Pressure Release |
| Color | Black, Yellow, Orange, or as Request |
| Material | PVC Coating Fabric |
| Application | Structural Load Testing, Proof Load Testing |
| Brand Name | Hongruntong Marine |
| Model Number | HM-BB8 |
| Certification | ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T,D/A,D/P,Western Union,MoneyGram | Supply Ability | 1883 Pcs Per Month |
| Delivery Time | 5-7 Work Days | Packaging Details | Wooden Pallets, Wooden Box |
| Product Name | Buoyancy Bags | Reinforcement | Nylon Fabric |
| Feature | Durable Construction, Easy Filling and Emptying | Lifting Capacity | 200kg to 50 tons |
| Thickness | 0.4mm-2.5mm, or as Request | Valve | Inflation and Pressure Release |
| Color | Black, Yellow, Orange, or as Request | Material | PVC Coating Fabric |
| Application | Structural Load Testing, Proof Load Testing | Brand Name | Hongruntong Marine |
| Model Number | HM-BB8 | Certification | ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS |
| Place of Origin | China |
Hongruntong Marine Buoyancy Bags are professional underwater lifting systems engineered for offshore recovery operations, submerged vessel stabilization, underwater construction support, and marine emergency response applications requiring reliable buoyancy performance under demanding operational conditions.
The product is manufactured using reinforced industrial composite fabric integrated with high-strength internal load-bearing structures, providing stable lifting capability and long-term structural durability during repeated subsea deployment.
A large offshore ship repair facility in East Asia experienced an emergency operational incident involving a partially flooded maintenance barge positioned inside a restricted dry dock transition zone during severe weather conditions.
Hongruntong Marine Buoyancy Bags were deployed as part of the emergency stabilization procedure. Multiple buoyancy units were installed along the affected section of the partially submerged vessel while commercial divers coordinated underwater attachment operations under restricted visibility conditions.
The buoyancy-assisted stabilization process enabled the engineering team to maintain controlled vessel positioning while emergency dewatering systems and temporary structural reinforcement procedures were performed simultaneously.
| Product Name | Buoyancy Bags |
| Raw Material | PVC coating fabric |
| Type | Cylindrical |
| Size | 500kg, 1000kg, 5000kg, 10000kg, etc |
| Thickness | 0.4-1.2mm, or as request |
| Color | Yellow, Blue, Black, etc |
| Density | 0.33-0.9g/cm³ |
| Safety Factor | 7:1 |
| Tolerances | +/- 0.03 on densities +/- 0.2 mm on thickness +/- 0 to +3mm on width +/- 0 to +3mm on length |
| Model | Buoyancy [kg] | Buoyancy [lbs] | Diameter [mm] | Length [mm] | Appr. Weight [kg] |
|---|---|---|---|---|---|
| HM-ULB01 | 200 | 441 | 500 | 1,000 | 5 |
| HM-ULB02 | 500 | 1,103 | 800 | 1,000 | 8 |
| HM-ULB03 | 1,000 | 2,205 | 1,000 | 1,500 | 11 |
| HM-ULB04 | 2,000 | 4,410 | 1,300 | 1,500 | 20 |
| HM-ULB05 | 4,000 | 8,820 | 1,600 | 2,000 | 50 |
| HM-ULB06 | 6,000 | 13,230 | 2,000 | 2,000 | 66 |
| HM-ULB07 | 8,000 | 17,640 | 2,000 | 2,600 | 75 |
| HM-ULB08 | 10,000 | 22,050 | 2,400 | 2,400 | 80 |
| HM-ULB09 | 15,000 | 33,075 | 2,600 | 3,000 | 110 |
| HM-ULB10 | 20,000 | 44,100 | 3,000 | 3,000 | 130 |
| HM-ULB11 | 30,000 | 66,150 | 3,000 | 4,500 | 170 |
| HM-ULB12 | 50,000 | 110,250 | 4,000 | 4,000 | 220 |
| HM-ULB13 | 70,000 | 154,350 | 4,000 | 5,700 | 310 |
| HM-ULB14 | 100,000 | 220,500 | 4,000 | 8,000 | 450 |
| HM-ULB15 | 150,000 | 330,750 | 5,000 | 8,000 | 660 |
| HM-ULB16 | 200,000 | 441,000 | 5,000 | 10,000 | 900 |
Note: Other sizes can be customized according to the requirements.
Company Details
Business Type:
Manufacturer
Year Established:
1990
Total Annual:
5,256,780-5,593210
Employee Number:
220~360
Ecer Certification：
Verified Supplier
Hongruntong Marine is a leading marine company specializing in providing comprehensive services in the maritime industry. With a strong emphasis on quality, safety, and efficiency, we strive to meet the evolving needs of our clients. Established in 1990, Hongruntong Ma... Hongruntong Marine is a leading marine company specializing in providing comprehensive services in the maritime industry. With a strong emphasis on quality, safety, and efficiency, we strive to meet the evolving needs of our clients. Established in 1990, Hongruntong Ma...
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