Crane Load Test Water Bags High Strength Fabric Leak Proof Easy Transport
Description
Crane Load Test Water Bags provide a modern, flexible solution for proof-load testing of cranes, lifting appliances, and structural hoisting systems across marine, port, construction, and industrial sectors. Designed as a safer and more economical alternative to traditional solid weights, these systems enable precise load simulation while simplifying transportation, storage, and deployment.
Hongruntong Marine water load bags are fabricated from high-strength polyester woven fabrics coated with advanced PVC elastomer compounds engineered for marine durability. The reinforced structural design ensures high tensile capacity, excellent tear resistance, and strong abrasion performance. Integrated lifting webbings distribute load forces evenly to maintain structural integrity during repeated lifting cycles.
Each bag incorporates high-flow filling valves, secure discharge systems, pressure safety protection, and optional calibrated monitoring equipment to allow gradual load application. Capacities typically range from small verification loads to large-scale heavy lift testing through modular combinations.
These water bags are widely used in shipbuilding, port infrastructure, offshore maintenance, heavy construction, and industrial crane certification programs where safe, repeatable, and efficient load testing is required.
Case Study
A large shipbuilding company required commissioning tests for newly installed gantry cranes used in hull block assembly. Previous testing relied on steel weights that were costly to transport within the yard and required significant labor for rigging and repositioning. Tight construction schedules made prolonged testing operations undesirable.
Hongruntong Marine supplied crane load test water bags configured to match the required proof loads. The bags were positioned quickly, filled using available freshwater sources, and monitored throughout the testing process. Gradual load application allowed engineers to verify crane structural performance, load indicators, braking systems, and safety mechanisms with high accuracy.
The shipyard completed the commissioning process ahead of schedule. Handling risks associated with heavy steel weights were eliminated, labor requirements were reduced, and storage space for test equipment was significantly minimized. The company subsequently integrated water load bags into its standard crane commissioning procedures and reported strong satisfaction with reliability, operational simplicity, and cost efficiency.
Specifications
| Name | Crane Load Test Water Bags |
| Application | Proof Load Testing, Offshore Load Testing, Structural Load Testing, Ship Load Testing, Industrial Equipment Testing, Research and Development. |
| Content | 100% POLYVINYL CHLORIDE |
| Phthalate | 7P Phthalate Free (includes all Phthalates listed in CAL Prop 65, CPSIA and REACH) |
| Backing Material Size | 1.8/2.0 Mm X 1.55m, Thickness Produced as Per Your Request. |
| Weight | 37.1 oz square yard/ 1450 +- 50 GSM |
| Special | UV Resistant |
| 7P Phthalate Free (includes all Phthalates listed in CAL Prop 65, CPSIA and REACH) | |
| BPA Free / Tris Free / Formaldehyde Free | |
| Does Not Contain Conflict Minerals | |
| Care Instructions | Rinse with Fresh Water and Air Dry |
| Do Not Store with Seawater and Keep Away From Heat Sources | |
| Available sizes | 5000 kg |
| 8,000 kg | |
| 1,0000 kg | |
| 15,000 kg | |
| 20,000 kg | |
| 30,000 kg | |
| 50,000 kg | |
| 100,000 kg | |
| Special Sizes Could be Customized | |
| OEM | Supported |
| MODEL | Weight | Volume | Empty Height (Length) |
Filled Height (Length) |
Max Diam (ø) |
Dry Weight without accessories |
| kg | Liters / m3 | m | m | m | kg | |
| lbs | USG | ft | ft | ft | lbs | |
| HM-1T | 1,000 | 1,000 / 1 | 2.52 | 2.23 | 1.39 | 36 |
| 2,204 | 264 | 8.27 | 7.33 | 4.56 | 80 | |
| HM-2T | 2,000 | 2,000 / 2 | 2.87 | 2.6 | 1.65 | 41 |
| 4,409 | 528 | 9.41 | 8.5 | 5.43 | 90 | |
| HM-3T | 3,000 | 3,000 / 3 | 3.38 | 2.97 | 1.82 | 50 |
| 6,613 | 792 | 11.11 | 9.75 | 6.0 | 110 | |
| HM-4T | 4,000 | 4,000 / 4 | 3.41 | 3.07 | 1.88 | 64 |
| 8,818 | 1,056 | 11.22 | 10.1 | 6.16 | 141 | |
| HM-5T | 5,000 | 5,000 / 5 | 4.14 | 3.52 | 2.13 | 80 |
| 11,023 | 1,320 | 13.60 | 11.58 | 7.0 | 176 | |
| HM-6T | 6,000 | 6,000 / 6 | 4.39 | 3.91 | 2.28 | 86 |
| 13,227 | 1,585 | 14.41 | 12.83 | 7.48 | 189 | |
| HM-8T | 8,000 | 8,000 / 8 | 4.54 | 3.93 | 2.52 | 104 |
| 17,636 | 2,113 | 14.91 | 12.91 | 8.27 | 230 | |
| HM-10T | 10,000 | 10,000 / 10 | 5.18 | 4.49 | 2.70 | 130 |
| 22,046 | 2,641 | 17.0 | 14.75 | 8.90 | 286 | |
| HM-12.5T | 12,500 | 12,500/ 12.5 | 5.43 | 4.62 | 2.86 | 154 |
| 27,558 | 3,302 | 17.91 | 15.16 | 9.39 | 340 | |
| HM-15T | 15,000 | 15,000 / 15 | 6.24 | 5.48 | 2.95 | 159 |
| 33,069 | 3,962 | 20.50 | 18.00 | 9.70 | 350 | |
| HM-20T | 20,000 | 20,000 / 20 | 6.78 | 6. 04 | 3.42 | 224 |
| 44,100 | 5,283 | 22.25 | 19.83 | 11.25 | 492 | |
| HM-25T | 25,000 | 25,000 / 25 | 7.51 | 6.40 | 3.75 | 315 |
| 55,115 | 6,604 | 24.66 | 21.0 | 12.33 | 695 | |
| HM-35T | 35,000 | 35,000 / 35 | 8.07 | 7.11 | 3.91 | 417 |
| 77,161 | 9,246 | 26.50 | 23.33 | 12.83 | 920 | |
| HM-40T | 40,000 | 40,000 / 40 | 8.71 | 7.72 | 4.07 | 440 |
| 88,184 | 10,566 | 28.58 | 25.33 | 13.36 | 970 | |
| HM-50T | 50,000 | 50,000 / 50 | 8.99 | 7.77 | 4.56 | 544 |
| 110,231 | 13,208 | 29.50 | 25.50 | 14.96 | 1200 | |
| HM-100T | 100,000 | 100,000 / 100 | 11.27 | 10.00 | 5.65 | 952 |
| 220,462 | 26,420 | 37.00 | 32.9 | 18.56 | 2100 |
Features
High Load Capacity with Structural Reliability
Hongruntong Marine water load bags are designed for high load performance using reinforced polyester fabrics and advanced polymer coatings. The integrated lifting webbing structure ensures balanced stress distribution, minimizing deformation and maintaining stability during heavy lifting operations. This structural reliability is essential for accurate crane certification and long-term operational safety.
Efficient Filling, Draining, and Handling Systems
The optimized valve design allows rapid filling and discharge of water, reducing preparation time during testing operations. Quick connection fittings simplify hose attachment, while optional monitoring systems improve load control accuracy. The foldable design allows easy handling and compact storage, significantly improving operational convenience compared with rigid test weights.
Excellent Abrasion and Chemical Resistance
Industrial and marine environments expose equipment to abrasive surfaces, oils, chemicals, and saltwater. The outer coating formulation provides strong resistance to abrasion, chemical exposure, and environmental degradation. This durability ensures consistent performance across repeated testing cycles.
Reusable Design with Long Service Life
Properly maintained water load bags can be reused for numerous testing operations. Their durable materials, reinforced seams, and high-quality fittings ensure long-term reliability, reducing lifecycle costs and improving sustainability compared with disposable or rigid alternatives.
Applications
Shipbuilding Crane Commissioning
Used extensively during new crane installation and shipyard infrastructure upgrades to verify lifting system safety and performance.
Port Infrastructure Maintenance
Suitable for periodic inspection of harbor cranes, container handling equipment, and lifting beams.
Heavy Industrial and Construction Projects
Applied in bridge construction, power plant maintenance, infrastructure lifting verification, and other heavy industrial environments requiring controlled load testing.
Why Choose Hongruntong Marine
Extensive Manufacturing Experience in Marine Load Testing Equipment
Hongruntong Marine has accumulated significant expertise in designing and manufacturing flexible load testing systems specifically for marine and industrial applications. Our products reflect practical operational experience and continuous technical refinement.
Reliable Quality Control and Product Traceability
Strict quality management procedures ensure consistent material strength, seam integrity, and lifting performance. Each product undergoes comprehensive inspection before shipment, providing confidence for certification and safety compliance.
Flexible Customization and Engineering Support
We provide customized capacities, structural configurations, filling systems, and monitoring accessories tailored to specific crane testing requirements. Engineering consultation helps customers select optimal solutions for their operational needs.
Professional Technical Service and Customer Support
From product selection to operational guidance and after-sales support, our team provides comprehensive assistance. This ensures safe deployment, efficient testing operations, and long-term product reliability.
FAQ
1. Can these water load bags replace traditional steel test weights completely?
In most crane proof-load testing applications they provide an effective alternative, particularly where transportation, safety, or operational efficiency is a concern.
2. What type of water can be used for filling?
Freshwater, seawater, or industrial water sources can generally be used, provided contaminants do not damage fittings or valves.
3. How should the bags be stored after use?
They should be fully drained, cleaned if necessary, dried thoroughly, and stored in a shaded environment away from sharp objects.
4. Are customized sizes and lifting configurations available?
Yes, Hongruntong Marine offers extensive customization to meet specific crane testing requirements.
5. Do you provide technical guidance for first-time users?
Yes, detailed manuals, operational guidance, and technical support are available to ensure safe and effective usage.



