
Grain Bunker Covers

Buoyancy and Salvage Lift Bags

Fuel and Gas Storage Bladder

Weather & Warehouse Curtains

Tanks for Rainwater Collection

Aquaculture Liners

Inflatable Brattice Walls

Custom Industrial Tank Liners

Dam and Pond Liners

Potable Water and Liquid Storage

Inflatable Underwater lift bags

Load Testing Bags

Thermal Concrete Curing blankets

Energy Storage and Production

Grain Bunker Covers

Buoyancy and Salvage Lift Bags

Fuel and Gas Storage Bladder

Weather & Warehouse Curtains

Tanks for Rainwater Collection

Aquaculture Liners

Inflatable Brattice Walls

Custom Industrial Tank Liners

Dam and Pond Liners

Potable Water and Liquid Storage

Inflatable Underwater lift bags

Load Testing Bags

Thermal Concrete Curing blankets

Energy Storage and Production
Looking for a reliable, cost-effective solution for proof load testing?
Fleximake’s Australian-made water weight bags offer a smarter, safer alternative to traditional solid weights. We design and manufacture collapsible, water-filled load testing bags for demanding industries. These bags simplify lifting equipment certification and structural performance testing across construction, mining, marine, offshore, and infrastructure sectors.
We offer a wide range of common-use designs, including our most popular Single-Point Lift water weight bags. That is available in various capacities and custom sizes. We also manufacture Cylindrical, Pillow, and Rectangular load testing bags to suit different structures, rigging requirements, and clearance limitations.
We use high-quality materials and industry-leading manufacturing techniques to produce water weight bags with excellent tensile strength. They resist tears and abrasions, making them ideal for repeated use in harsh environments.
Our water weight bags are lightweight when empty, easy to transport, and quick to deploy. They’re ideal for crane and davit testing, platform verification, bridge load assessments, and marine structural testing.
Fully reusable, they’re a practical choice for verifying structural integrity, certifying lifting equipment, and ensuring compliance across a wide range of industries.
Model No | Capacity (kg) | Dimensions (mm) | Pack Weight (Kg) |
FMWB500KG | 500 | 1000 Dia x 1450 H | 15 |
FMWB1T | 1,000 | 1250 Dia x 2050 H | 20 |
FMWB2T | 2,000 | 1700 Dia x 2450 H | 30 |
FMWB3T | 3,000 | 1700 Dia x 3450 H | 40 |
FMWB5T | 5,000 | 2300 Dia x 3800 H | 50 |
FMWB10T | 10,000 | 2500 Dia x 4000 H | 90 |
** Need a custom size? We can design to suit your load testing requirements.
Bag Type | Ideal For | Key Benefits |
Single-Point Lift | Crane and davit load testing | Central lift point for efficient hoisting |
Cylindrical | Shafts and tunnels, structural stress testing, platform support, and lifeboat or gangway simulations | Narrow footprint, makes use of height |
Pillow | Bridges, decks, flat surfaces | Low profile and compact storage |
Rectangular | Beams, floors, spread load testing | Stable base and even weight distribution |




At Fleximake, we specialise in designing custom products tailored precisely to your unique site requirements. Whether you face limited headroom, complex rigging setups, or remote locations with challenging access. Each product is precision-engineered using CAD to match your application—ensuring a secure, accurate, and practical solution.
Let Fleximake create the perfect custom load testing bag that ensures safety, accuracy, and reliability on every job.
Fleximake delivers durable, Australian-made load testing solutions with unmatched reliability. Contact us for a quote or custom design!
Let’s Discuss Your Needs.