Sourcing telescopic hydraulic cylinders from China

Duty on telescopic cylinders and related parts

Heading 8412 covers other engines and motors, including linear acting hydraulic cylinders. For an ordinary telescopic hydraulic cylinder, check 8412 21 80 90 first. The table also includes hydraulic systems, hydraulic parts and a narrowly described container-handling cylinder line. Use that specialised line only where the complete tariff description matches; its inclusion does not establish that your cylinder qualifies.

Read from the UK Trade Tariff on 30 September 2026, the selected cylinder and hydraulic-system lines carried 2% duty on goods from China, while hydraulic parts carried 0%. The supplied tariff record lists no anti-dumping or countervailing duty, suspension or attached import control for these selected lines.

Confirm the commodity code using the drawing, function and condition as imported, including whether the shipment contains complete cylinders, systems or separate parts. For the wider product family, see hydraulic and pneumatic cylinders.

Specify every telescopic stage

Specify single-acting or double-acting operation, stage count, each stage's diameter and stroke, total travel, closed length and mounting centres. Provide the load and mounting geometry throughout extension, not just the cylinder's overall pressure rating. Ask the factory to identify the available force at each stage and the intended extension and retraction sequence.

Agree working and test pressure, oil compatibility, temperature range, port threads, seal compounds, wipers and replacement seal kits. Record acceptable leakage, surface finish and corrosion protection on the approved drawing. Describe any side loading and ask the machine designer to confirm the mounting arrangement.

Confirm with the relevant machinery-safety authority how incorporated cylinders should be addressed in the machine builder's conformity assessment. Ask the supplier and machine builder to settle the cylinder's status before ordering. If supplied as partly completed machinery, it should be accompanied by assembly instructions and a declaration of incorporation.

Worked duty example

Illustrative example, not a quote: 40 telescopic hydraulic cylinders, illustrative order under 8412 21 80 90, invoiced at £28,000 free on board, with £4,000 of freight and insurance to the UK. The customs value is £32,000. Duty at 2% is £640. Import VAT at 20% is charged on the customs value plus duty, £32,640, so it is £6,528. Import taxes total £7,168; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £640 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Dimensions: measure closed length, mounting centres, pin bores and each stage's travel against the approved drawing. Check port positions and clearance through the installed movement.

Movement and leakage: have the factory demonstrate full extension and retraction under the agreed test conditions. Record stage sequence, sticking, external leakage and any movement during the agreed holding test.

Surfaces and seals: inspect exposed stages for scoring, dents, corrosion and plating defects. Check wipers and seal identification against the agreed materials, and examine mounting and port welds.

Cleanliness and records: check plugged ports, protected sliding surfaces and packing damage on arrival. Match pressure-test records and material certificates to the delivered batch. Put these checks in the inspection brief.

What goes wrong

A cylinder can match the total stroke yet fail to fit because its closed length, mounting centres or port orientation differ. A load assessment based only on the largest stage can miss the available force near full extension. Settle the stage-by-stage load requirement with the machine designer before approving the sample.

Side loading, scored sliding surfaces and unsuitable seals can cause sticking or leakage. Dirt trapped between stages can damage seals, while unprotected surfaces can corrode during storage. Test the agreed movement and leakage conditions before shipment, then check arrival damage before installation.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For machinery and equipment, see machinery imports.