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Hongruntong Marine LLC.

  • China,Beijing ,Beijing
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China Boat Lift Bag Lightweight Flexible Sturdy Corrosion Resistant Long Service Life
China Boat Lift Bag Lightweight Flexible Sturdy Corrosion Resistant Long Service Life

  1. China Boat Lift Bag Lightweight Flexible Sturdy Corrosion Resistant Long Service Life
  2. China Boat Lift Bag Lightweight Flexible Sturdy Corrosion Resistant Long Service Life
  3. China Boat Lift Bag Lightweight Flexible Sturdy Corrosion Resistant Long Service Life
  4. China Boat Lift Bag Lightweight Flexible Sturdy Corrosion Resistant Long Service Life

Boat Lift Bag Lightweight Flexible Sturdy Corrosion Resistant Long Service Life

  1. MOQ: 1
  2. Price: US$18-US$888
  3. Get Latest Price
Payment Terms L/C, T/T, D/A, D/P, Western Union, MoneyGram
Supply Ability 3250 Pcs Per Month
Delivery Time 5-7 Work Days
Packaging Details Wooden Pallets, Wooden Box
Product Name Boat Lift Helper
Feature Durable Construction, Easy Filling and Emptying
Reinforcement Nylon Fabric
Warranty 36 Months
Lifting Capacity 200kg to 50 Tons
Application Structural Load Testing, Proof Load Testing
Valve Inflation and Pressure Release
Material PVC Coating Fabric
Thickness 0.4mm-2.5mm, or as Request
Color Black, Yellow, Orange, or as Request
MOQ 1
OEM Welcome
Brand Name Hongruntong Marine
Model Number HM-BLH66
Certification ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms L/C, T/T, D/A, D/P, Western Union, MoneyGram Supply Ability 3250 Pcs Per Month
Delivery Time 5-7 Work Days Packaging Details Wooden Pallets, Wooden Box
Product Name Boat Lift Helper Feature Durable Construction, Easy Filling and Emptying
Reinforcement Nylon Fabric Warranty 36 Months
Lifting Capacity 200kg to 50 Tons Application Structural Load Testing, Proof Load Testing
Valve Inflation and Pressure Release Material PVC Coating Fabric
Thickness 0.4mm-2.5mm, or as Request Color Black, Yellow, Orange, or as Request
MOQ 1 OEM Welcome
Brand Name Hongruntong Marine Model Number HM-BLH66
Certification ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS Place of Origin China
High Light lightweight boat lift bagcorrosion resistant boat lift helpersturdy flexible boat lift bag
Boat Lift Bag Lightweight Flexible Sturdy Corrosion Resistant Long Service Life

Boat Lift Helper is a versatile marine lifting system designed to provide reliable buoyancy assistance for underwater lifting, vessel positioning, and flotation support. It plays a crucial role in marine operations where controlled lifting and stability are required, including shipyard maintenance, port services, offshore construction, and marine salvage activities.

The system is manufactured using high-strength PVC-coated synthetic fabric that offers exceptional durability and resistance to harsh marine environments. The reinforced structure ensures high tensile strength and reliable buoyancy performance even when exposed to repeated heavy lifting operations.

Case Study: Harbor Workboat Refloating Operation

A commercial harbor in Northern Europe experienced an incident where a 16-meter harbor service workboat partially flooded and sank at its berth due to a mechanical failure in the bilge pump system. The vessel weighed approximately 25 tons and settled on the harbor floor at a depth of around 4 meters.

Because the incident occurred in a narrow docking area, bringing in a large crane was impractical. Harbor authorities decided to deploy Boat Lift Helper systems to perform a controlled refloating operation.

Divers installed several units along both sides of the vessel's hull. Special attention was given to distributing the lifting force evenly to avoid hull stress during the lifting process. After the installation was completed, compressed air was gradually introduced into the systems.

As buoyancy increased, the vessel slowly separated from the seabed. The lifting operation was carefully monitored to maintain balance and ensure the hull remained stable throughout the process. Within two hours, the workboat was successfully refloated and secured at the dock.

Specifications
Product NameBoat Lift Helper
Raw MaterialPVC Coating Fabric
TypeCylindrical
Size500kg, 1000kg, 5000kg, 10000kg, etc
Thickness0.4-1.2mm, or as request
ColorYellow, Blue, Black, etc
Density0.33-0.9g/cm³
Safety Factor7:1
Tolerances±0.03 on Densities, ±0.2mm on Thickness, ±0 to +3mm on Width, ±0 to +3mm on Length
Model Specifications
ModelBuoyancy (kg)Buoyancy (lbs)Diameter (mm)Length (mm)Weight (kg)
HM-BLH012004415001,0005
HM-BLH025001,1038001,0008
HM-BLH031,0002,2051,0001,50011
HM-BLH042,0004,4101,3001,50020
HM-BLH054,0008,8201,6002,00050
HM-BLH066,00013,2302,0002,00066
HM-BLH078,00017,6402,0002,60075
HM-BLH0810,00022,0502,4002,40080
HM-BLH0915,00033,0752,6003,000110
HM-BLH1020,00044,1003,0003,000130
HM-BLH1130,00066,1503,0004,500170
HM-BLH1250,000110,2504,0004,000220
HM-BLH1370,000154,3504,0005,700310
HM-BLH14100,000220,5004,0008,000450
HM-BLH15150,000330,7505,0008,000660
HM-BLH16200,000441,0005,00010,000900

Note: Other sizes can be customized according to the requirements.

Features
  • Optimized Buoyancy Performance: Engineered for efficient buoyancy generation with cylindrical design for stable lifting profile and balanced force distribution
  • Heavy Duty Fabric Construction: Industrial-grade PVC-coated fabric reinforced with high-strength polyester fibers for exceptional tensile strength and flexibility
  • Compact and Portable: Lightweight and compact when deflated for easy transport and quick deployment in various locations
  • Operational Safety and Stability: Balanced buoyancy design ensures vessels rise evenly with controlled inflation process for greater operational control
Applications
  • Shipyard Vessel Repair Support: Lifting or stabilizing vessels for better access to underwater hull areas during maintenance and inspection
  • Marine Construction Assistance: Supporting installation of underwater structures, positioning marine components, and equipment placement
  • Harbor Emergency Response Operations: Quick refloating of flooded or partially sunk vessels in port environments
Why Choose Hongruntong Marine
  • Specialized Marine Equipment Manufacturer: Extensive experience in marine structural design and underwater lifting technologies
  • Proven Manufacturing Technology: Advanced welding and reinforcement techniques with pressure testing and structural inspection
  • Flexible Production Capacity: Capable of handling both standard product orders and customized solutions
  • Long Term Partnership Approach: Technical guidance, product training, and ongoing support for optimal results
Frequently Asked Questions
  • What buoyancy capacities are typically available? Standard options range from small lifting assistance units to larger systems capable of supporting heavy marine vessels. Custom capacities available.
  • How long does it take to deploy the lifting system? Experienced divers can typically install and prepare the system within a few hours.
  • Can the system be used in deep water environments? Yes, suitable for both shallow and deeper water environments depending on configuration.
  • What safety precautions should be taken? Ensure proper placement, balanced buoyancy distribution, and gradual air inflation with continuous monitoring.
  • How should the equipment be stored after use? Rinse with fresh water, dry thoroughly, and store in clean, dry location away from direct sunlight.
Product Images
Boat Lift Helper marine lifting system in operationClose-up view of Boat Lift Helper construction and materialsBoat Lift Helper deployed for vessel lifting applicationProfessional installation of Boat Lift Helper system

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • 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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  • Hongruntong Marine LLC.
  • C1-7, Xuhui Center, Jinguan North 2nd Street, Shunyi District, Beijing City, P.R. China 101300
  • https://www.marine-airbags.com/

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