U-Panel Bags
“The industrial standard. Built for heavy and dense loads.”
The U-Panel bag is the proven industrial standard for heavy-duty bulk shipping. A single continuous length of high-tenacity woven fabric forms the base and two opposite side walls in a 'U' shape, closed by two parallel side panels.
The Engineering Behind This Construction
The 'U' shaped fabric sheet eliminates bottom corner seams, placing the entire deadweight of the payload onto unbroken fabric.
Two vertical side panels are double-needle chain stitched to the U-section with heavy polyester thread.
The unbroken bottom cradle provides superior lifting loop load transfer, making it the most reliable construction for dense minerals and metals.
Best Suited To
- ✓Dense mineral sands, abrasive concentrates, ferro-alloys, and ores
- ✓Rigorous export shipping where bags experience multiple intermodal transfers
- ✓Multi-trip operations demanding 6:1 safety factor reliability
Where This is the Wrong Economy
- ✕Lightweight voluminous goods that demand rectangular container maximization (choose Baffle)
- ✕Extremely fine fluidised powders where completely seamless bodies are preferred (choose Circular)
Specification Parameters
| Safe Working Load (SWL) | 500 kg to 2,000 kg |
| Safety Factor (SF) | 5:1 (Single trip) and 6:1 (Multi-trip reusable) |
| Fabric Construction | Flat woven PP fabric with UV stabilization (160 to 250 GSM) |
| Base Reinforcement | Continuous unbroken U-piece cradle |
| Stitching | Heavy-duty chain stitch + overlock with optional dustproof cord |
Continuous Load Cradle
The base of the bag is formed by continuous woven fabric, eliminating perimeter base seams that fail under shock drops.
Proven Lifting Geometry
Corner loops align naturally with the continuous fabric span, distributing dynamic crane acceleration forces evenly.
Dense Load Resilience
Engineered specifically for heavy bulk density products (ores, ferrosilicon, dense chemicals, wet sands).
Global Supply Familiarity
Standardised construction recognized and handled smoothly by bulk terminals and port operators worldwide.
Available Lifting:
- • Corner seam loops with heavy backing patches
- • Cross-corner loops with double-stitched anchor bands
- • Heavy stevedore loops for deep-sea vessel hoisting
Filling & Discharge:
- • Full open top with hemmed edge
- • Top filling spout with tie string
- • Reinforced heavy-duty discharge spout with protective pyjama/petal closure
Engineer your U-Panel Bags specification.
Provide your cargo weight, target bulk density, and facility handling requirements. We evaluate your application and supply an itemized quotation within 24 business hours.