Molten steel poured into moulds in the foundry at Klafreströms Stålgjuteri

Klavreström · since 1998

Mould.
Cast.
Finish.

We cast stainless and acid-proof steel for the pump, valve, pulp and paper, food, energy and marine industries. The whole chain sits under one roof, from pattern and mould to heat-treated, blasted and certified castings.

ISO 9001:2015 TÜV per PED Bureau Veritas Mode II Part of Opima

References

Supplying demanding industry

Our castings sit inside pumps, valves, paper machines and vessels built by manufacturers that cannot compromise on surface finish or pressure tightness.

Sulzer Alfa Laval Xylem Valmet Somas Stafsjö Cellwood Humphree Log Max Olvondo Silver Weibull Turab FFS

Production

The whole chain under one roof

Three steps, one site. The short distance between moulding, casting and finishing is why we can keep lead times short.

Read the whole process

Why KSG

A foundry that takes the whole job

  • Stainless and acid-proof is our speciality

    We cast practically every commonly used steel grade, with the emphasis on stainless and acid-proof alloys.

  • The CO₂ method gives dimensional accuracy

    New sand combined with zircon sand next to the pattern gives fine surfaces and keeps finishing costs down.

  • Documented heat treatment

    The furnace is fitted with a recorder, so the process can be followed and verified through the full cycle.

  • Short decision paths

    Quick answers and short lead times are the motto that runs through the company.

Fettling of castings in the fettling shop

1998

Formed through the merger of Klarviks Stålgjuteri and Klafreströms Stål

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Certifications and approvals: ISO 9001, TÜV per PED, Bureau Veritas

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Industries we supply, from pumps and valves to food and marine

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Companies in the Opima group, with shared capacity and expertise

Quality

Certifications and policy

We are certified to ISO 9001:2015 and approved by TÜV under the Pressure Equipment Directive. We also hold Bureau Veritas Mode II Recognition.

More on materials and quality

Ready for the next step?

Get in touch and we will prepare a quote.