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QINFENG Custom FIBC manufacturer since 2001

Circular FIBC

A seamless circular-woven bag closed with a round base, so free-flowing product empties completely and the body stays circular under load.

Direct factory B2B volume pricing
Size 70 cm diameter x 100 cm to 110 cm diameter x 130 cm (typical)
SWL / Safety Factor 500 kg to 1,500 kg SWL
Top Open top, duffle top, filling spout, with or without skirt
Lifting loops Four-corner, cross-corner, single-loop, two-loop
Best for: Free-flowing powders and granules loaded to 500-1,500 kg that are emptied into a round hopper, pneumatic line or screw conveyor, where complete discharge matters more than…
Not the answer when: The filled bag has to stack flat on a pallet, hold a rectangular footprint in a container, or stay dimensionally stable on an automated line.
Confirm before quoting: The intake the bag is emptied into, SWL and safety factor, filling and discharge method, and whether a liner is needed.
/ Overview & Principle

HOW THIS BAG IS BUILT

Woven on circular looms as one continuous tube, with no vertical side seam in the body. The base is closed into a circle rather than folded into a rectangle, and the lifting loops are sewn into the top seam. Filling and discharge openings follow the customer’s line: an open top or a filling spout, and a discharge spout sized to how the material actually flows.

Because there is one body seam to control instead of four, the construction keeps the seam count of a tubular bag while removing the flat-bottom corner where fine product otherwise collects.

Operational summary:

A seamless circular-woven bag closed with a round base, so free-flowing product empties completely and the body stays circular under load.

Circular FIBC — construction diagram, 720 x 520 px placeholder Recommended Size: 720 x 520 px
/ Features

KEY DESIGN ADVANTAGES.

Complete discharge, no corner residue

A round base leaves no flat corner for powder to sit in, which matters where a changeover cannot tolerate carry-over between products.

Fits round hoppers and pneumatic lines

The circular section matches the intake of a round hopper or screw conveyor, so the bag can be emptied without a liner or a shaking cycle.

One body seam to control

Seam leakage is the usual route for fine powders, and a circular body has one seam instead of four.

/ Construction & Performance

WHAT DECIDES THE SPECIFICATION.

5 points decide how this bag is specified. Use the arrows, the dots, or a swipe.

Circular FIBC — What it is for (960 x 640 px) 960 x 640 px
Positioning

What it is for

A seamless circular-woven bag closed with a round base, so free-flowing product empties completely and the body stays circular under load.

Circular FIBC — How it is built (960 x 640 px) 960 x 640 px
Construction

How it is built

Woven on circular looms as one continuous tube, with no vertical side seam in the body. The base is closed into a circle rather than folded into a rectangle, and the lifting loops are sewn into the top seam. Filling and discharge…

Circular FIBC — What you fix before weaving (960 x 640 px) 960 x 640 px
Configuration

What you fix before weaving

Size · SWL / Safety Factor · Top · Lifting loops

Circular FIBC — Its working envelope (960 x 640 px) 960 x 640 px
Performance

Its working envelope

Rated for 500-1,500 kg SWL in standard configurations, with fabric weight and loop construction set by the confirmed SWL and safety factor. Performance figures in a quotation apply to the confirmed specification only.

Circular FIBC — Where it is not the answer (960 x 640 px) 960 x 640 px
Limits

Where it is not the answer

A round base does not sit flat on a pallet and the body does not hold a square footprint, so this is not the bag for pallet stacking or for container plans that depend on a rectangular load.

/ Configurations

CUSTOM CONFIGURATIONS & SIZING.

Size
70 cm diameter x 100 cm to 110 cm diameter x 130 cm (typical) Set by the fill volume and the intake the bag is emptied into.
SWL / Safety Factor
500 kg to 1,500 kg SWL Safety factor and test protocol confirmed at quotation stage.
Top
Open top, duffle top, filling spout, with or without skirt A skirt or duffle is the usual answer to dust at the fill point.
Lifting loops
Four-corner, cross-corner, single-loop, two-loop Loop type follows the lifting equipment at the customer's site.
/ Performance

PERFORMANCE, TESTING & LIMITS.

1. Performance & working envelope

Rated rangeRated for 500-1,500 kg SWL in standard configurations, with fabric weight and loop construction set by the confirmed SWL and safety factor. Performance figures in a quotation apply to the confirmed specification only.

2. How it is validated

TestingIn-house checks cover fabric weight, seam strength and bag dimensions on each production run, with first-piece and final inspection recorded against the order. Third-party testing is arranged where the buyer's market requires it and is quoted separately.

3. Limits

Where it is not the answerA round base does not sit flat on a pallet and the body does not hold a square footprint, so this is not the bag for pallet stacking or for container plans that depend on a rectangular load.

Selection & Purchasing Guidance

Best For:
Free-flowing powders and granules loaded to 500-1,500 kg that are emptied into a round hopper, pneumatic line or screw conveyor, where complete discharge matters more than shape retention.
Consider Alternatives When:
The filled bag has to stack flat on a pallet, hold a rectangular footprint in a container, or stay dimensionally stable on an automated line.
Must Confirm Before Quoting:
The intake the bag is emptied into, SWL and safety factor, filling and discharge method, and whether a liner is needed.
/ On site

SEEN ON SITE.

Loading, lifting and standing full — the working conditions the specification is written for. Use the arrows, or drag the rail.

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  • Circular FIBC on site — Filled at the bagging line 1000 x 625 px
    Filled at the bagging line
  • Circular FIBC on site — Handled under the base 1000 x 625 px
    Handled under the base
  • Circular FIBC on site — Lifted on the loops 1000 x 625 px
    Lifted on the loops
  • Circular FIBC on site — Standing full in a yard 1000 x 625 px
    Standing full in a yard
  • Circular FIBC on site — Base and seams after a load 1000 x 625 px
    Base and seams after a load
  • Circular FIBC on site — Baled and stacked in the warehouse 1000 x 625 px
    Baled and stacked in the warehouse
/ Factory direct B2B pricing

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