Sourcing sludge filter belts from China
Candidate sludge-dewatering belt lines carry 4% to 6% UK duty from China; classification depends on construction and machine use. Check UK REACH obligations for substances in the belt, including finishes and coatings. Cambridge China Bridge sources sludge-dewatering filter belts.
4% or 6%, depending on classification
Read from the UK Trade Tariff on 30 September 2026, heading 5911 covers textile products and articles for technical uses. The table is a classification shortlist for sludge-dewatering belts and their filter cloth. The paper-making or similar-machine lines cover endless fabrics or fabrics fitted with linking devices. A sludge belt should not be assigned these lines solely because it is endless: confirm the machine use, material and construction.
The shortlisted similar-machine lines carry 4% duty from China; other filtering cloth and other technical textile articles carry 6%. The supplied facts show no anti-dumping or countervailing measures, suspensions or attached import controls on these selected lines. The wider heading includes 0% duty and suspensions for specified products, but those descriptions do not cover sludge-dewatering filter belts.
Confirm the commodity code using the machine description, belt drawing, fibre composition, fabric mass and joining method. HMRC's Tariff Classification Service offers advice without legal binding effect if classification remains uncertain. For the wider heading, see filter press cloths.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Other silk or man-made fibre belts for paper-making or similar machines, below 650 g/m² | 5911 31 19 00 | 4% | None |
| Other silk or man-made fibre belts for paper-making or similar machines, 650 g/m² or more | 5911 32 19 00 | 4% | None |
| Other filtering or straining cloth for presses or similar equipment | 5911 40 00 90 | 6% | None |
| Other technical textile articles; check applicability to finished filter belts | 5911 90 99 90 | 6% | None |
Specify the belt, joint and sludge conditions
Provide the press model and a drawing showing finished width, operating circumference, edge reinforcement, seam construction and joining-pin details. State whether the belt is supplied endless or opened for installation. Specify fibre, weave, fabric mass, thickness, permeability at an agreed pressure, working tension and operating temperature. Agree how dimensions are measured, including whether the belt is relaxed or tensioned.
Describe the sludge, conditioning chemicals, wash water and cleaning method. Agree a sample trial assessing drainage, solids retention, cake release and tracking on the intended equipment. Ask for a UK REACH statement covering fibres, finishes and coatings. UK REACH generally applies to substances in articles, so assess the applicable obligations alongside the supplier's evidence.
Worked duty example
Illustrative example, not a quote: Illustrative batch of replacement sludge-dewatering filter belts, assuming this code is confirmed under 5911 90 99 90, invoiced at £14,000 free on board, with £1,200 of freight and insurance to the UK. The customs value is £15,200. Duty at 6% is £912. Import VAT at 20% is charged on the customs value plus duty, £16,112, so it is £3,222.40. Import taxes total £4,134.40; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £912 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Fit: measure width and circumference using the agreed method; compare the seam, pin and edge details with the drawing and check installation compatibility.
Fabric: check fibre identity, weave, fabric mass and permeability across the width against the approved sample and specification.
Joint and edges: inspect seam alignment, pin retention, loose yarns and edge reinforcement; check for raised areas that could mark the cake or catch on the machine.
Arrival: inspect for creases, abrasion, damp packing and mixed belt sizes; retain batch identification and compare the delivered belt with the approved sample.
Working out your own order? Send us the product on WhatsApp and we reply the same working day: WhatsApp us
What goes wrong
A belt can match the nominal width but have the wrong operating circumference or joining arrangement. Uneven weave or a crooked joint can cause tracking problems. Excessively open fabric can lose solids, while unsuitable permeability or a finish that blinds readily can reduce drainage. Weak edges and poorly retained joining pins can interrupt operation.
Approve substitutions with the equipment operator before production. Compare the delivered construction with the signed sample and trial it with the actual sludge and wash conditions before accepting its performance. Include seam and edge checks in the inspection brief.
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 sludge-dewatering filter belts from China?
The shortlisted lines carry 4% or 6%, with no listed anti-dumping or countervailing measures. Similar-machine fabric lines carry 4%; other filter cloth and technical textile articles carry 6%. Confirm the belt's code.
What measurements does a filter belt supplier need?
Send finished width, operating circumference, seam and joining-pin details, edge construction and the press model. State how dimensions are measured and whether the belt is relaxed or tensioned.
How do I compare sludge filter belt samples?
Compare fibre, weave, fabric mass and permeability using the same method. Trial drainage, solids retention, cake release and tracking with the intended sludge, conditioning chemicals and wash conditions.
Do sludge-dewatering filter belts need a UK REACH check?
UK REACH generally applies to substances in articles. Obtain information on fibres, finishes and coatings, then assess the relevant obligations; a supplier statement alone does not complete that assessment.