Closed impeller
- Process
- Sand casting
- Material
- CF3M (316L)
- Weight
- 700 kg
- Size
- Ø1200 mm
Stainless & alloy steel foundry
Castings engineered to your drawing, poured since 1992.
Investment casting, sand casting, in-house CNC machining and full QA, under one roof in Citeureup, Indonesia.
ISO 9001:2018 certified
0.1–800 kg per casting
20+ alloy grades
About Trieka
Three decades of molten metal.
Established in 1992 as a specialised stainless steel foundry, we have grown our technique, people and supply chain to serve OEM replacement and special-needs castings for industry worldwide.
Our story →
1992Pouring stainless and alloy steel in Citeureup for over 30 years
In-house CNC machine shop
ISO9001
Certified quality management, 2018 edition
Chemical analysis, mechanical testing and NDT on every order before it leaves the foundry.
Download certificate →Under one roof
From pattern to packed part, in six steps.
No subcontracted casting, no lost handovers. Every step happens at our facility in Citeureup.
01
Pattern & tooling
Patterns, core boxes and tooling are made in our own workshop, so changes to your design never wait on a third party.
CAD/CAM · SolidWorks · SolidCAM
02
Simulation
Gating, feeding and solidification are simulated before the first pour to prevent shrinkage and porosity.
Z-Cast casting simulation
03
Melting & casting
Induction melting with tight chemistry control, poured into investment shells or resin, CO2 and green sand moulds.
125–800 kVA induction furnaces
04
Heat treatment
Solution annealing, normalising and tempering to the ASTM or customer specification.
Gas & electric furnaces, up to 1200 °C
05
CNC machining
Castings are machined to finished, ready-to-install dimensions and dynamically balanced when required.
Turning Ø1200 mm · 5-axis · balancing Ø3200 mm
06
Inspection & packing
Chemistry, mechanical properties, NDT and dimensions are verified and documented before shipment.
OES · XRF · UT · RT · PT · 7-axis CMM
Established in Citeureup
1992
Annual capacity
900 t
Max cast weight
800 kg
Dynamic balancing, mm
Ø3200
People on site
100+
Request for quotation
Send your drawing, get a quotation.
Every request is reviewed by our engineers, not a sales script. Tell us the material, weight and quantity and we come back with a quotation and a process recommendation.
Engineering review of every drawingCasting method, material and machining allowance checked.
Upload PDF, DWG or STEPUp to 25 MB per file, multiple files allowed.
Prototype to repeat productionLow, medium and high volume orders.
Poured metals
From 304 to super duplex, 20+ grades poured to ASTM.
Our metallurgists match the alloy to your service conditions: corrosion, abrasion, heat or strength. Custom alloys are poured to your specification.
View materials →Capabilities
From molten metal to finished part.
Casting, heat treatment, machining and inspection are done in-house, so quality and delivery stay under one roof.
Selected parts
Cast for pumps, turbines and process plants.
Francis vane runner
- Process
- Investment
- Material
- CF3M (316L)
- Weight
- 230 kg
- Size
- Hydro turbine
Product shot: Pelton runner CA6NM (B&W, from company profile)
Pelton runner
- Process
- Investment
- Material
- CA6NM
- Weight
- 70 kg
- Size
- Hydro turbine
Impeller
- Process
- Precision casting
- Material
- 316 (CF8M)
- Weight
- 5 kg
- Size
- Ø300 × 75 mm
What casting processes does Trieka offer?
Investment (lost-wax) casting for precise parts from 0.1 to 300 kg, and sand casting for larger parts up to 800 kg. Both can be finished with in-house CNC machining.
What materials can you cast?
More than 20 stainless and alloy grades, including 304/316(L), duplex and super duplex, CA6NM, 17-4 PH, Alloy 20, 254 SMO and heat-resistant grades such as HK-40, plus custom alloys.
How do I request a quotation?
Use the Request a Quote form and attach your drawing (PDF, DWG, STEP). Include material, weight and quantity for a faster response.
