Kunwu Heavy Request a Quote

Large Weldments, Machined Complete — In One Plant

We cut, form, weld and finish-machine heavy steel parts to your drawings. Parts up to 4 tonnes and 12000 mm long, machined after welding without leaving the building.

Email Your Drawing Can We Make It?

Acknowledgement in 4 working hours. Quotation in 48.

Five-axis double-swivel milling head with a tool loaded
Max part envelope2800 × 1600 × 800 mm
Max piece weight4 t
Max plate thickness80 mm
Hole position after welding±0.5 mm

Welded and machined under one roof

Cutting, forming, welding, stress relief and finish machining happen in the same plant. The part is set up once and stays on one datum. One supplier, one responsibility.

Paperwork your auditor will accept

EN 10204 3.1 mill certificates, documented melt-and-pour origin, welding records and a first-article dimensional report travel with every shipment.

A quotation, not just a price

Within 48 hours you get a proposed process route, a material plan, an inspection plan and a priced breakdown — enough to put straight into your purchasing system.

What we make

Materials we handle

Paperwork that travels with the part

Importing fabricated steel into the EU has become a documentation problem as much as a manufacturing one.

Since January 2026, CBAM applies to CN codes including 7308, 7311, 7318 and 7326 — which is where most weldments and fabricated steel parts land. From 1 October 2026, you need to be able to show where the steel was melted and poured. And a mill certificate marked 3.1 is not the same thing as one marked 3.2.

We keep that trail on our side so your customs broker and your auditor don't have to chase it.

Process chain from plate to packed part Eight stages: plate, cutting, forming, welding, stress relief, machining, coating and packing, all performed in one plant. FROM PLATE TO PACKED PART Every stage below happens inside the same plant. Plate mill cert + heat no. 01 Cutting laser / plasma / flame 02 Forming press brake / rolling 03 Welding to qualified WPS 04 Stress relief before machining 05 Machining one setup, one datum 06 Coating blast + paint 07 Packing fumigated crate 08 The part is referenced once, at stage 06. Stress relief comes before machining, not after.
Every stage happens inside the same plant.

How a job runs

StepWhenWhat happens
1. Drawing reviewWithin 4 working hoursWe open the files and tell you whether it is inside our envelope.
2. Technical clarificationSame dayIf something on the drawing is ambiguous, you hear about it before we price it — not after we cut it.
3. QuotationWithin 48 hoursProcess route, material plan, inspection plan, priced breakdown.
4. ProductionPer scheduleCut, formed, welded, stress-relieved, machined, coated.
5. InspectionFirst article, in-process, finalDimensional report on every new part number.
6. Packing—Fumigated crates, export marking, photographs before the lid goes on.
7. DeliveryFOB / CIF / DAPDocuments issued before the vessel sails.

Talk to the engineer who will quote it

Your enquiry is read by an engineer before anyone replies to it. The person who answers is the one who works out how to make the part.

Technical Team

Fabrication and machining engineers

Drawing review, process planning and quotation — the reply you get is written by the person who worked out how to make the part.

sales@kunwuheavy.com

Not sure if we're the right shop?

Tell us the material, the thickness and roughly how big it is. We'll tell you straight away whether it's a job for us — and if it isn't, what kind of shop you should be looking for.

Email Your DrawingCan We Make It?