Cast Pump & Gearbox Housings
Sand-cast pump and gearbox housings in grey iron and alloy steel, machined on the critical faces to the drawing.
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Casting Parts
Cast Brackets & Valve Bodies
Cast valve bodies and support brackets in cast iron, with the flow path cored and the sealing faces machined.
| Casting weight | 1 – 300 kg per part |
|---|---|
| Tolerance | ±1.5 mm as-cast; ±0.10 mm after machining |
| Casting standard | JB/T 7946 general casting tolerance |
About this part
What it is and why it is made that way
Valve bodies are cast because the internal flow path is complex and because a cast iron body resists the pressure and the corrosion. The passages are formed with cores rather than drilled, and the sealing faces are machined flat so the valve seats properly. These are supplied as castings or fully machined and tested.
- Internal flow paths formed with sand cores
- Sealing faces machined flat and square
- Supplied raw or fully machined and pressure tested
- Cast iron, ductile iron or alloy steel to specification
Materials
- Grey cast iron HT250
- Ductile iron QT500-7
- Alloy cast steel ZG270-500
- Aluminium ADC12 / A356
Production processes
- Sand casting
- Resin sand casting
- Green sand casting
- Core making
- Shot blasting
Typical applications
- Valve and check valve bodies
- Pipe fittings and connectors
- Machine support brackets
- Pump manifolds
Specification
Technical detail
The ranges below are what this shop typically holds. Anything tighter than the baseline is possible — send the drawing and we will confirm it against your specific tolerances rather than quote from a table.
| Casting weight | 1 – 300 kg per part |
|---|---|
| Tolerance | ±1.5 mm as-cast; ±0.10 mm after machining |
| Casting standard | JB/T 7946 general casting tolerance |
| Machining | Datum-based machining against customer drawings |
| Inspection | Material and dimensional report issued per heat |
| Casting weight | 2 – 150 kg per part |
| Face flatness | ≤0.15 mm on machined sealing faces |
| Test | Hydrostatic pressure test available on request |
Material and finish are yours to choose. The lists above are the families this part is normally made in. We will not substitute a grade or change a tolerance without telling you first — and asking.
In the same process line
Other Casting parts
If this is not quite your part, these are made on the same equipment with the same inspection.
Cast Flanges & Manifold Bodies
Cast iron flanges and manifold bodies, drilled and faced to the specified bolt pattern and pressure rating.
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Cast Impellers & Fan Housings
Cast impellers and fan housings in cast iron and aluminium, balanced and machined to the specified hub and bore.
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Get a quote for this part
Send the drawing and we will quote it against your material, your tolerance and your quantity. One business day, in writing, with a lead time you can plan around.