Iron foundry and machine shop · Qidong, China

Large iron castings for machine tool builders

Gray and ductile iron castings up to 20 tons — poured, stress-relieved and machined in one plant, then delivered to your US dock with duties included.

Send a drawing for a quote See our castings
A long row of machined and painted machine tool columns in the Hudong plant Machine tool columns, machined and painted
20t
Max single-piece weight
20,000t
Annual casting capacity
30+yrs
Casting iron since 1994
30,000m²
Plant area
Our plant

A 30,000 m² foundry and machine shop in Qidong

Three facilities in the Qidong Binhai Industrial Park, on the north bank of the Yangtze across from Shanghai. Molding, melting, heat treatment and machining all happen on one site.

Aerial view of the Hudong Casting plant in Qidong Binhai Industrial Park
Aerial view · Qidong Binhai Industrial Park
Foundry workshop bay with overhead cranes and molding flasks
Foundry bay with overhead cranes
Resin sand processing and molding tower in the Hudong foundry hall
Resin sand system, foundry hall
Resin sand molding line in the Hudong foundry
Resin sand molding line
Finished castings staged outside Hudong production buildings
Castings staged for shipment
  1. 1994Founded in Shanghai as a green-sand foundry
  2. 2007Moved to Qidong and switched to resin sand casting
  3. 2020Third facility added in Binhai Industrial Park
  4. 2021Plant-wide equipment and workshop upgrade

Supplying castings to machine tool and industrial equipment makers

What we make

Structural castings where stiffness and accuracy matter

Most of our work goes into machine tools. The same foundry and machine shop also serves pump, gearbox and heavy-equipment makers.

Machine tool bed, column and saddle castings with machined guideways

Machine tool structures

Beds, columns, bases, saddles, cross-rails and worktables — the parts that set a machine's stiffness and long-term accuracy.

Gray ironUp to 20 t
Machined T-slot worktable casting

Machined castings

We rough- and finish-machine in our own shop, so castings arrive ready for assembly instead of going to a second supplier.

Machined facesCMM inspected
Large pump volute casting, as-cast

Industrial castings

Pump bodies, gearbox and reducer housings, compressor blocks, valve bodies and crusher wear parts.

Gray & ductileAlloy irons
Large machined bed casting beside a horizontal boring machine
Why Hudong

One plant, from molten iron to finished surface

Casting and machining under one roof

One supplier, one quality system and one point of accountability for every part.

Stress-relieved for stability

Structural castings are annealed in our 60-ton furnaces before machining, so beds stay flat over the life of the machine.

Chemistry checked on every heat

A furnace-side spectrometer verifies each melt, and material certificates ship with your order.

Priced delivered, duties included

We quote DDP to your dock, so you can compare us directly with domestic suppliers.

Capabilities

What our plant can handle

Molten iron being poured in the Hudong foundry

Foundry

Process
Resin sand casting
Gray iron
HT150–HT350 (≈ ASTM A48 Class 25–50)
Ductile iron
QT300–QT400 (≈ ASTM A536)
Max piece weight
20 t
Heat treatment
2 × 60 t stress-relief furnaces
Machining centers with castings on the floor of the Hudong machine shop

Machining and inspection

Largest part
Up to 6,000 × 4,000 mm
5-face machining
OKUMA MCM20, 4,200 × 2,200 mm
Guideway grinding
4,000 × 2,500 mm table
Vertical turning
Up to Ø4,000 mm
Inspection
ZEISS CMM, 2,500 × 5,000 mm
Full machining equipment list
MachineTypeWorking range
OKUMA MCM205-face machining center4,200 × 2,200 × 1,050 mm
Chevalier FBB-110LHorizontal boring and milling center3,000 × 2,000 × 1,800 mm
Cincinnati G15Horizontal machining center2,000 × 1,500 × 1,600 mm
YCM NDV3016BGantry machining center3,200 × 1,600 × 800 mm
Doosan HB800Horizontal machining center1,250 × 1,000 × 1,000 mm
Nantong GDW-25/400BGuideway grinder4,000 × 2,500 mm table
TK6920 / TK6916CNC floor-type boring millsUp to 6,000 × 4,000 mm
CK5250 / C5225E / CA5116ECNC vertical turning lathesUp to Ø4,000 mm
ZEISSCoordinate measuring machine2,500 × 5,000 mm
How we work

From drawing to delivery

Send your drawing

PDF or STEP file, material grade, annual volume and delivery location.

Review and quote

We check manufacturability and quote tooling, part price and lead time, delivered DDP.

First article

We make the pattern, pour the first castings and inspect them to your drawing.

Production and shipping

Serial production to your schedule, export-packed and shipped via Shanghai.

Machine tool columns stretch-wrapped for export
Wrapped for export
Export shipping container being loaded at the Hudong plant
Containerized export
Container truck leaving the Hudong plant
Leaving our dock
FAQ

Iron casting questions from buyers

What iron grades do you cast?

Gray iron HT150–HT350 (roughly ASTM A48 Class 25–50) and ductile iron QT300–QT400 (roughly ASTM A536), plus alloy irons for wear parts. All castings are made by resin sand molding.

How large a casting can you make?

Single pieces up to 20 tons. Our machine shop handles parts up to 6,000 × 4,000 mm on floor-type boring mills and up to Ø4,000 mm on vertical turning lathes.

Do you machine the castings?

Yes. We rough- and finish-machine in our own shop — 5-face machining, horizontal boring and milling, gantry machining and guideway grinding — and inspect on a ZEISS CMM, so parts arrive ready for assembly.

How do you keep large castings stable and accurate?

Structural castings are stress-relieved in two 60-ton annealing furnaces before machining, and every heat is checked on a furnace-side spectrometer. Material certificates ship with each order.

Can you deliver to the United States?

Yes. We export-pack, ship via Shanghai and quote DDP to your dock with duties included, so you can compare our price directly with domestic foundries.

What industries do you supply?

Mainly machine tool builders — beds, columns, bases, saddles, cross-rails and worktables. We also cast pump bodies, gearbox and reducer housings, compressor blocks, valve bodies and crusher wear parts.

What do you need to quote a casting?

A part drawing (PDF or STEP), material grade, annual volume, whether you need it as-cast or machined, and your delivery ZIP code. Email it to juncheng@hudongcasting.com.

Request a quote

Get a delivered price for your part

Send us your drawing and we'll come back with tooling cost, part price and lead time, quoted to your dock with duties included.

Email your drawing Call (925) 968-5999

What to include

  • Part drawing (PDF or STEP)
  • Material grade
  • Annual volume
  • As-cast or machined
  • Delivery ZIP code