Sourcing geotextile dewatering bags from China
Geotextile dewatering bags within heading 6305 generally carry 6% UK duty; knitted strip bags carry 12%, with a narrowly defined 0% suspension for certain lined bulk bags. Confirm the finished bag's code. In England, dewatering may need abstraction and discharge permissions. Cambridge China Bridge sources geotextile dewatering bags.
Duty depends on the finished bag
Heading 6305 covers sacks and bags of a kind used for packing goods. For geotextile dewatering bags, the table gives candidate lines for woven strip fabric, nonwoven fabric, other man-made textiles and nonwoven bulk containers. Ask your customs broker to assess the finished bag's material, construction and intended use before treating any line as confirmed.
Read from the UK Trade Tariff on 1 October 2026, the selected lines carry 6% duty for goods from China; knitted polyethylene or polypropylene strip bags carry 12%. The supplied extract lists no anti-dumping or countervailing measures or attached import controls. Under 6305 32 19 00, a 0% suspension applies specifically to polypropylene strip bags with a polyethylene liner, subject to its stated exclusions. Do not assume a permeable dewatering bag qualifies.
Provide fabric composition, construction details, photographs and a description of use when confirming the commodity code. Compare the wider bulk bags and woven sacks guide, but agree filtration performance separately from any bulk-container load rating.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Other woven bags of polyethylene or polypropylene strip | 6305 33 90 00 | 6% | None |
| Other nonwoven bags of man-made textile materials | 6305 39 00 10 | 6% | None |
| Other man-made textile bags, neither knitted nor nonwoven | 6305 39 00 99 | 6% | None |
| Nonwoven flexible intermediate bulk containers | 6305 32 90 10 | 6% | None |
Specify filtration, seams and hose entry
State the polymer, woven or nonwoven construction, fabric mass, pore opening, water permeability, bag dimensions and hose connection. Describe the slurry, particle distribution and proposed pumping conditions. Agree test methods and acceptance criteria for sediment retention, drainage and seam strength. Trial a sample with representative slurry before approving production.
Specify inlet reinforcement, closure method, supporting surface, filling limits, outdoor exposure and handling after filling. Ask for instructions covering installation, pumping, inspection and removal. If the bag is intended to be lifted when full, request evidence for that complete design and handling method.
For Great Britain sales, check the material and additives against applicable UK REACH restrictions, which can limit, ban or impose conditions on substances. Request composition information and relevant test evidence. In England, dewatering may require both an abstraction licence and a water discharge activity permit; confirm site permissions separately from the bag specification.
Worked duty example
Illustrative example, not a quote: 5,000 small nonwoven dewatering bags, illustrative order under 6305 39 00 10, invoiced at £25,000 free on board, with £3,000 of freight and insurance to the UK. The customs value is £28,000. Duty at 6% is £1,680. Import VAT at 20% is charged on the customs value plus duty, £29,680, so it is £5,936. Import taxes total £7,616; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £1,680 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Fabric: compare construction, mass, dimensions and batch test reports with the approved sample; inspect for holes and damaged folds.
Seams and inlet: check stitching, reinforcement and hose fit; look for skipped stitches, loose closures and leakage around the connection.
Filtration: trial representative slurry at the agreed pumping conditions; record drainage, sediment breakthrough and clogging.
Instructions and traceability: match batch identification to reports and check installation, filling and removal instructions against the ordered design.
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What goes wrong
A fabric that drains quickly with clean water may clog with the buyer's slurry or release fine sediment. Weak seams and an unsupported inlet can leak before the bag reaches its intended fill level. Fabric substitutions can change filtration even when dimensions and colour match. Keep an approved sample and agreed test records for comparison.
Do not treat clear-looking filtrate as evidence that site permissions have been settled. Confirm the dewatering activity with the relevant authority before pumping. Reject unsupported claims that a generic fabric report proves the finished bag's filtration, seam performance or suitability for lifting.
Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For own-brand ranges, see sourcing for brands.
Frequently asked questions
What is the UK import duty on geotextile dewatering bags from China?
The selected heading 6305 lines carry 6%; knitted strip bags carry 12%. A specific lined bulk-bag line has a conditional 0% suspension. Confirm the finished bag's code before ordering.
Which fabric should I specify for a dewatering bag?
Specify sediment retention and drainage for your actual slurry, then agree fabric construction, pore opening, permeability and seam tests. Fabric mass alone does not establish filtration performance.
Can I lift a dewatering bag when it is full?
Agree this before ordering. Request evidence for the complete bag and intended lifting method, including seams and attachments. Do not infer lifting suitability from a fabric strength report.
Does using a dewatering bag remove the need for a discharge permit?
Check the activity separately. In England, dewatering may require both an abstraction licence and a water discharge activity permit. Confirm the site's permissions before pumping.