Crane Load Test Water Bags High Strength Fabric Leak Proof Easy Transport

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.

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.

• 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.
• 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.
• 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.
• 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.

• 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.

• Extensive Manufacturing Experience: Significant expertise in designing and manufacturing flexible load testing systems specifically for marine and industrial applications.
• Reliable Quality Control and Product Traceability: Strict quality management procedures ensure consistent material strength, seam integrity, and lifting performance.
• Flexible Customization and Engineering Support: Customized capacities, structural configurations, filling systems, and monitoring accessories tailored to specific crane testing requirements.
• Professional Technical Service and Customer Support: Comprehensive assistance from product selection to operational guidance and after-sales support.