What Calamo does

Calamo AB is a Swedish specialty industrial firm founded in 1918 in Molkom, Sweden, that provides surface treatment services and high-purity stainless steel components for industries with stringent cleanliness, corrosion-resistance, and documentation requirements. The company operates Europe's largest electropolishing facility — including a 6x3x2-meter vessel capable of processing components weighing up to five tons — alongside dedicated pickling (cold and NOX hot pickling), passivation, and subcontracting capabilities. Its technology stack centers on electrochemical and chemical surface finishing that removes ~20µm of surface material during electropolishing and ~5µm during hot pickling, measurably improving corrosion resistance (58-78% reduction in corrosion rate, 85-91% improvement in pitting resistance) and producing a passive layer 50-120% thicker than naturally formed.

The product portfolio spans two segments. Tubes & Fittings includes high-purity gas tubes, ASME BPE SF1/SF4 high-purity water tubes for pharmaceutical WFI systems, medical gas tubes compliant with ASTM G93 and ISO 7396-1, and heat exchanger tubes. Customized Solutions & Products includes electropolished chromatography columns for HPLC/UPLC applications, pre-cut internally electropolished tubes, and full-scope plant design and engineering services. Surface treatment services are sold both as standalone offerings and as bundled subcontracting work spanning precision parts to multi-ton vessels, supported by training, laboratory analysis, and electrolyte composition services. End markets are diversified across microelectronics/semiconductor, pharmaceutical and life science, hospitals and medical gas, energy (including nuclear, fusion, and wind), food and beverage, and other process industries (biotechnology, aerospace, pulp & paper, automotive).

The company is privately held under Swedish law (Calamo AB, private limited), with majority ownership since 2008 held by the Fiebig family via Dockweiler AG, a related surface-treatment specialist; prior ownership was held by Sandvik Group (1996-2008) and earlier by Uddeholm and Avesta Sheffield. Revenue is generated through direct enterprise sales led by a specialized team (Sales Solution Engineer, Sales Subcontracting Services, Sales Tubes & Fittings) with quote-based, project-by-project pricing and global shipment under export-compliant packaging. The company holds ISO 9001, ISO 14001:2015, PED 2014/68/EU, AD 2000 W-series, EN 10204 3.1, and (as of 2025) EcoVadis Bronze certifications, and ships under product-specific traceability documentation. With approximately 70 employees at a single Molkom site, Calamo operates a focused, certification-gated, project-driven model rather than a high-volume commodity model.

Name

Calamo

Legal name

Calamo AB

Website

https://calamo.se

Company type

Private

Founded year

1918

Operating status

Operating

Headcount range

11–50 employees

Short description

Calamo AB, founded in 1918 in Sweden, specializes in electropolishing, pickling, and passivation of stainless steel components for pharmaceutical, semiconductor, medical, energy, and food industries. It operates Europe's largest electropolishing facility from Molkom, Sweden.

Ownership category

akta.pro rank

Headquarters

HQ city

Molkom

HQ country

Sweden

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations

Revenue model

1. Tubes & Fittings Products: Stainless steel tubes and fittings that are surface treated to meet extreme requirements. Products include high-purity water tubes (ASME BPE SF1 and SF4), heat exchanger tubes, high-purity gas tubes (PQE, CQE, CQM products), and medical gas tubes. Products come with certificates ensuring traceability and compliance.
2. Customized Solutions & Products: Tailored surface treatment projects, pre-cut electropolished tubes, chromatography columns, and plant design solutions. Projects include comprehensive documentation and CE marking.
3. Subcontracting Services: Subcontracting services for surface treatment including precision-engineered stainless steel components to large-scale structures. Full responsibility option including strategic procurement, specialized subcontractors collaboration, precision assembly, and customized packaging.
4. Training & Analysis Services: Education programs covering surface treatment selection, joining techniques, bath maintenance, safety regulations, and sustainable waste management. Laboratory analysis services for electrolyte composition, microstructural evaluations, and process optimization.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Calamo provides surface treatment services for stainless steel including electropolishing, pickling, and passivation, alongside manufacturing of high-purity stainless steel tubes, fittings, and customized components. The company serves industries requiring extreme purity, corrosion resistance, and hygiene such as semiconductor manufacturing, pharmaceutical production, healthcare, energy, and food processing. Operations are anchored in Europe's largest electropolishing facility in Molkom, Sweden, with the capability to process components from tiny precision parts to vessels weighing up to five tons.

Product overview

Calamo is a surface treatment company specializing in stainless steel tubes, fittings, and precision components for industries requiring high purity standards. The product portfolio centers on two main categories: Tubes & Fittings (including High-Purity Gas, High-Purity Water, Medical Gases in Hospitals, and Heat Exchanger products) and Customized Solutions (Chromatography columns, Plant Design services, and Pre-Cut Electropolished Tubes). These are complemented by three core surface treatment services: Electropolishing, Pickling, and Passivation. The company also offers Subcontracting and Training & Analysis services. Calamo operates Europe's largest electropolishing facility, serving pharmaceutical, biotechnology, semiconductor, medical, food, and energy industries from their headquarters in Molkom, Sweden.

Differentiator

Problem solved

Functional benefit

Products and services

• High-Purity Gas Tubes & Fittings Stainless steel tubes, fittings, and valves with surface treatment (electropolishing and cleanroom treatment) for high-purity gas systems used in semiconductor manufacturing, pharmaceutical production, and biotechnology applications.
• High-Purity Water Tubes & Fittings ASME BPE SF1 and SF4 certified stainless steel tubes and fittings optimized for Water for Injection (WFI) applications in biotechnology and pharmaceutical industries.
• Medical Gases in Hospitals Tubes & Fittings CQM Medical products with guaranteed hydrocarbon content below 2.5 mg/m² for safe transportation of medical gases in hospitals, compliant with ASTM G93 and ISO 7396-1 standards.
• Heat Exchanger Tubes Electropolished, seamless, and welded tubes for heat exchangers ensuring optimal heat transfer efficiency, corrosion resistance, and surface cleanliness for pharmaceutical, biotechnology, food processing, and energy sectors.
• Chromatography Columns Electropolished chromatography columns designed for HPLC and UPLC applications in pharmaceutical production, featuring smooth inner surfaces for improved separation accuracy and reduced bandwidth.
• Plant Design Services Engineering and plant design services covering the full project lifecycle from initial concept to final implementation, including Factory Acceptance Test (FAT) and Site Acceptance Test (SAT), with CE marking and comprehensive documentation.
• Pre-Cut Electropolished Tubes Customized pre-cut and internally electropolished stainless steel tubes in customer-specified lengths with deburred or chamfered ends, ready for welding and installation.
• Electropolishing Services Electrochemical surface treatment process for stainless steel that removes approximately 20µm from the surface layer, enhancing corrosion resistance, hygiene, and surface finish. Calamo operates Europe's largest electropolishing facility.
• Pickling Services Chemical treatment using hot pickling (NOX treatment) or cold pickling to remove weld oxides, contaminants, and annealing scale from stainless steel surfaces, creating clean and uniform surfaces.
• Passivation Services Chemical treatment using mild acid (oxidizing agent) to strengthen the protective oxide layer on stainless steel, restoring passive properties lost during mechanical polishing or grinding.
• Subcontracting Services Comprehensive subcontracting services for stainless steel components ranging from precision parts to structures weighing several tons, with specialized surface treatment including a 6x3x2-meter electropolishing vessel.
• Training & Analysis Services Educational programs covering surface treatment selection, electrolyte analysis, and laboratory expertise for process optimization in electropolishing, pickling, and passivation.

Quantifiable outcome

• Corrosion rate decreases by 58-78% after electropolishing
• +4 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Poligrat GmbH: Poligrat GmbH is a German specialist in electrochemical surface finishing, particularly electropolishing of stainless steel and other metals. It directly competes with Calamo on core technology, serves overlapping high-purity industrial customers, and operates from a similar European industrial-services foundation.
• Dockweiler AG: Dockweiler AG is Calamo's controlling shareholder (since 2008) and itself operates in similar electropolishing and high-purity stainless steel surface treatment, making it both parent and most directly comparable peer. It shares technology overlap and serves many of the same European regulated end-markets.
• Astro Pak: Astro Pak is a US-based metal finishing and electropolishing specialist serving semiconductor, pharmaceutical, biotech, and aerospace customers. It offers near-identical high-purity process capabilities to Calamo, making it the most direct transatlantic peer.

Regional players

• C. Uyemura & Co., Ltd. C. Uyemura is one of Japan's largest specialists in metal surface treatment, offering electroplating and electropolishing to electronics and industrial customers across Asia. It is comparable in technology focus and high-purity end-markets, but operates primarily in a different geography.

Others

• Quaker Houghton: Quaker Houghton is a global leader in industrial process fluids and metal surface treatment chemistry. While it supplies chemistry and equipment to surface treatment providers rather than competing directly in services, it is an adjacent enabling player in the same metal finishing value chain as Calamo.
• Element Solutions Inc. Element Solutions is a US-listed specialty chemicals company (including the Atotech brand) supplying surface finishing chemistry to automotive, electronics, and industrial end-markets. It operates at the chemistry-supply layer used by surface treatment services providers including Calamo's competitors.

Broad incumbents

• Aalberts N.V. Aalberts N.V. is a Dutch listed industrial group with substantial surface treatment operations serving semiconductor, food, and industrial customers across Europe. As a multi-business industrial group, it provides broad-incumbent context for Calamo's niche electropolishing focus.
• Mersen: Mersen is a French listed industrial group serving semiconductor, pharmaceutical, and energy customers with high-purity equipment and materials. It operates adjacent value-chain activities to Calamo in high-purity applications and shares exposure to the same regulated end-markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/calamo-ab

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Calamo