Proof Load Test Bags Reinforced Seam Long Service Life Excellent Durability

Water Weight Bags provide a controlled, efficient, and safe methodology for validating lifting equipment across maritime, offshore, industrial, and construction environments. Designed with robust coated fabrics engineered to withstand hydrostatic pressure, these bags replace traditional solid weight blocks by offering significantly easier deployment and a safer testing process.

When empty, the bags are lightweight and compact, allowing rapid mobilization and reduced transport cost. Once attached to the lifting device, they are filled with water drawn directly from the site, enabling highly controlled load increments. This eliminates sudden loading surges and provides real-time monitoring of structural responses during testing.

From a technical perspective, Water Weight Bags offer uniform load distribution and precise control of test parameters. The materials used are resistant to UV exposure, abrasion, and saltwater corrosion. Reinforced lifting beams, internal baffles, and stress-diffusion panels ensure the load is evenly transferred to the lifting point.

In 2023, a Norwegian offshore maintenance contractor undertook a comprehensive load verification of a 25-ton pedestal crane on a semi-submersible drilling rig. Due to deck-space limitations and strict helicopter-lift weight rules, transporting conventional steel weights to the platform was impossible.

The testing team mobilized the deflated bags via routine supply-boat delivery, eliminating the need for heavy-lift vessels. Once on deck, the bags were assembled and connected with offshore-certified slings and a load cell. The team monitored hook load and crane deformation as filling progressed through staged increments.

• Advanced Hydrostatic Stability and Controlled Deformation: Engineered with enhanced hydrostatic stability to minimize fluid-induced oscillation, especially during offshore or elevated tests.
• Reinforced Welded Seams with High-Frequency Fusion Technology: Each bag incorporates seams produced using high-frequency (HF) fusion welding, creating a bond stronger than the base material.
• Multi Point Rigging Distribution with Anti-Twist Architecture: The rigging assembly utilizes a multi-point connection system with heavy-duty webbing integrated directly into the bag's structural spine.
• Operational Efficiency Through Low Manpower Deployment: One of the defining advantages of these Water Weight Bags is the dramatic reduction in manpower required for full test setup.

• Offshore Platform Crane Verification
• Aircraft Hangar Hoist and Maintenance Bay Testing
• Structural Load Simulation for Walkways and Gangways

• Proven Track Record in Offshore and High-Risk Environments
• Integrated Engineering Support and On-Site Technical Guidance
• Strict Manufacturing Controls and Comprehensive Product Testing
• Rapid Dispatch and Global Availability of Spare Components