September 22, 2025
Understanding Load Testing Water Bags
Load Testing Water Bags are specialized, flexible containers designed to simulate heavy loads during proof load testing of lifting equipment. They are widely used for cranes, lifeboats, davits, winches, gangways, and offshore platforms to ensure safety and compliance with international standards.
Instead of using solid weights or steel blocks, Load Testing Water Bags are filled with water on-site to create the desired test load. This method is:
Safer – Gradual loading reduces risk to equipment and personnel
Cost-effective – No need to transport heavy solid weights
Flexible – Multiple bags can be combined for higher capacities
Easy to handle – Lightweight and compact for storage and shipping
Certified and Durable Materials: Made from high-strength PVC or reinforced polyester fabric
Precision and Accuracy: Calibrated flow meters and load cells ensure accurate weight measurement
Rapid Deployment: Quick-fill valves and strong lifting points for fast setup
Wide Capacity Range: From a few tons to hundreds of tons for different applications
Reduced Logistics Costs: Only water is transported on-site
Minimal Storage Space: Foldable and compact when not in use
Customizable Solutions: Sizes and capacities tailored to specific projects
With over 30 years of manufacturing expertise, Hongruntong Marine is a leading global supplier of Load Testing Water Bags. Our products are used in shipyards, ports, and offshore industries worldwide. We provide:
ISO-certified quality
Customized load testing solutions
Global shipping and technical support
Load Testing Water Bags have transformed the way industries conduct proof load testing by providing a safer, faster, and more economical solution. Whether for crane load tests, lifeboat inspections, or offshore lifting equipment verification, Hongruntong Marine offers proven, reliable products backed by decades of experience.