A U-panel bag folds one continuous fabric piece into two side walls and the base. With fewer seams than a 4-panel bag, it is the strongest value for most dry bulk — ZONGYE's default, lowest-cost standard design.
Standardised fields so you can compare quickly. Values shown are typical; the exact build is confirmed against your product and destination market.
| Parameter | Typical value | Note |
|---|---|---|
| Product Name | U-Panel FIBC Bulk Bag | Also called U-bag / jumbo bag |
| Bag Construction | U-panel (1-piece side/base) | Fewer seams than 4-panel |
| Material | 100% virgin PP woven | Anti-UV optional |
| Dimensions | Customised | 900×900×1100 mm typical |
| SWL | 500–2000 kg | Common 1000 / 1200 kg |
| Safety Factor | 5:1 | 6:1 on request |
| Top Options | Duffle / spout / open | Dust-minimising spout |
| Bottom Options | Flat / discharge spout | Spout for controlled discharge |
| Lifting Loops | 4 corner / cross-corner | Colour-coded optional |
| Fabric Weight | 90–220 g/m² | Per load & application |
| Coating / Lamination | Optional | For fine-powder leak control |
| Inner Liner | Optional PE 0.06–0.10 mm | For hygroscopic goods |
| Printing | 1–4 colours | Logo & handling marks |
| Colour | White (standard) | Custom colours available |
| UV Stabilisation | Optional | For outdoor storage |
| Electrostatic Type | Type A (standard) | Type B/C/D on request |
| Stitching | Lock-stitch + filler cord | Dust-proof seam option |
| Packaging | Bale / pallet | Wrapped, clean storage |
| Compliance | ISO 9001 · UN/Type C/D on request | Per order requirement |
Every field below is produced to your order. We confirm the exact combination before manufacturing.
One-piece side/base fabric; front and back panels sewn on for strength and economy.
Open duffle for fast fill, or spout for dust-controlled filling.
Flat closed bottom, or discharge spout for controlled emptying.
Standard lift; cross-corner loops for low-height or automated handling.
Coating optional for fine-powder leak control.
0.06–0.10 mm liner for moisture and hygiene.
Logo, lot and handling marks.
Clear pocket for batch / certificate; UV treatment on request.
The U-panel is the workhorse of the bulk-bag world. One folded fabric piece forms two walls and the base, so there are fewer seams to fail and less labour to make — that is why it is the default choice for general dry bulk.
The U-panel fits most free-flowing dry solids — pick coating or liner by how fine or moist the product is.
Cereals, animal feed and pulses where fast fill and low cost matter.
Construction sand, aggregates and industrial minerals in bulk.
Plastic granules and pellets; liner optional for cleanliness.
The "U" fold forms two sides and the base in one piece; the remaining panels and lifting loops complete the bag.
Selected steps of our woven-PP production. Full factory capability is detailed on the About Us page.
PP tape woven into fabric; tubular or panel.
Optional lamination for leak control.
Cut to size; logo and handling marks.
U-panel assembly with loop and liner.
Inspection, clean packing, shipment.
ZONGYE is an integrated FIBC manufacturer in Luannan County, Tangshan, Hebei, China. Producing in-house lets us keep the U-panel line cost-competitive and respond fast to custom orders.
See factory & capacity
Note: our ISO 9001 / 14001 / 45001 management system covers the factory. Product-specific certifications (UN, Type C/D, food-grade) are confirmed per product and order — we never present a general certificate as proof that every bag passed product testing.
Send material, use, dimensions, SWL and estimated quantity.
We lock construction, top/bottom, loops, liner, printing and documents.
Sample or final specification confirmed before bulk run.
Production, inspection, packing and shipment (FOB Tianjin / CIF / DDP).
500 pcs (standard)
Custom 1,000–2,000 pcs; trial orders special-approved.3–5 working days
Standard sample free (freight collect); custom 7–10 days. Test report on request.15–25 days (standard)
Custom 20–35 days from order confirmation & deposit.FOB Tianjin / CIF / DDP
T/T 30% + 70% before shipment or against B/L copy; L/C at sight with guarantee; Sinosure accepted.Tell us the product, load and discharge method. We'll send a data sheet and a quote within 24 hours.
