What SIJ Ravne Systems does

SIJ Ravne Systems d.o.o. is a Slovenian industrial equipment manufacturer organized as a subsidiary of SIJ – Slovenska industrija jekla, d.d. (SIJ Group), a steel producer listed on the Ljubljana Stock Exchange. The company operates four branded product lines: SIKNIVES (industrial knives), SIROLLS (forged rolls), SIMATEC (machine components and spare parts), and SILABS (metallurgical laboratory services), and serves customers in steel, aluminum, non-ferrous metals, recycling, paper, and wood processing across more than 70 countries, with approximately 85% of revenue generated from export markets. Its technical platform rests on the parent group's specialty steel production capability, including proprietary grades such as SIMAXX 1100 developed for wind turbine applications and SINOXX 4404 specified for the ITER fusion reactor project.

The business model is B2B industrial supply: revenue is generated through direct sales of engineered, specification-driven tooling, replacement parts, and metallurgical testing services to enterprise customers in capital-intensive industries, where tooling performance directly affects customer production efficiency and uptime. Pricing is engineered rather than commodity-based, and the company benefits from vertical integration into parent-group steelmaking for material cost control and metallurgical expertise. Recent commercial moves include the June 2026 launch of the CALIBRA digital platform, the Green² sustainability brand, and 2024 ResponsibleSteel certification, signaling an evolution toward digital services and ESG-qualified supply chains. SIJ Group-level context is material for assessment: group revenue declined 23.1% to approximately €1 billion in 2023 with an €18.8 million net loss and €73.3 million EBITDA, Kearney was engaged as restructuring advisor in December 2025, and a long-term refinancing solution covering approximately €330 million of gross financial exposure was executed in February 2026.

Name

SIJ Ravne Systems

Legal name

SIJ RAVNE SYSTEMS d.o.o. družba za proizvodnjo industrijske opreme in storitve

Website

https://sij.ravnesystems.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

51–100 employees

Short description

SIJ Ravne Systems is a Slovenian manufacturer of industrial knives, forged rolls, machine components, and metallurgical laboratory services under parent SIJ Group, serving steel, aluminum, recycling, paper, and wood processing customers across 70+ countries with specialty steel grades.

Ownership category

akta.pro rank

Headquarters

HQ city

Ravne na Koroškem

HQ country

Slovenia

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Revenue model

1. Industrial Knives (SIKNIVES): Sale of industrial knives for metal, recycling, wood, paper, and other industries. Includes custom manufacturing and replacement parts.
2. Forged Rolls (SIROLLS): Sale of forged rolls for cold rolling of steel, aluminum, and non-ferrous metals. Includes Sendzimir rolls for stainless steel.
3. Machine Components and Spare Parts (SIMATEC): Sale of metallurgical equipment, handling equipment, and custom spare parts for steel mills, rolling mills, aluminum plants, and forges.
4. Industrial Laboratory Services (SILABS): Accredited laboratory services including chemical analyses, calibrations, non-destructive and destructive testing, and training.
5. Steel Products: SIJ Group generates revenue from selling stainless and special steels, with approximately 1 billion EUR revenue in 2023, 85% from exports across 70 countries.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

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Product overview

SIJ Ravne Systems is a steel manufacturing and industrial equipment company operating under the SIJ Group (Slovenian Steel Group). The company offers a portfolio of four main product and service brands: SIKNIVES (industrial knives for metal, wood, paper, recycling, and other industries), SIROLLS (forged rolls for cold rolling of steel, aluminum, and stainless steel), SIMATEC (machine components, spare parts, maintenance and machine building services), and SILABS (industrial laboratory services including chemical analyses, calibrations, non-destructive and destructive testing, and training). Additionally, the company recently launched CALIBRA, a digital platform for managing measurements and calibrations. The product portfolio is organized around serving steel mills, rolling mills, aluminum industry, metal processing, wood processing, paper and cardboard, recycling, and other industrial sectors.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Hardness uniformity within +/-0.5 HRc across entire working surface
• +5 more outcomes

Named customers7 records

Segments6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• KearneycoreStrategic or Co-development Partner · 17 December 2025Global management consulting firm providing restructuring advisory services. Kearney brings steel industry experts to support SIJ Group's restructuring and business transformation process.
• Bosio d.o.o.minorStrategic or Co-development PartnerPartner in RANO&STEEL research and development project for advanced tool steel development.
• CPPE d.o.o.minorStrategic or Co-development PartnerPartner in RANO&STEEL research and development project for advanced tool steel development.
• University of Maribor - Faculty of Mechanical Engineering (UM)minorStrategic or Co-development PartnerAcademic partner in RANO&STEEL research and development project for advanced tool steel development.
• Olympic Committee of Slovenia (OKS - ZŠZ)minorStrategic or Co-development PartnerJoint project for outdoor steel fitnesspolygons throughout Slovenia. SIJ Ravne Systems manufactures and donates steel exercise equipment. Project running since 2015 with 27 polygons installed across Slovenia.
• Deloitte revizija d.o.o.minorOthersExternal audit firm for SIJ Ravne Systems and SIJ Group
• Slovene Accreditation (Slovenska akreditacija)minorOthersNational accreditation body that has accredited SILABS laboratories for testing and calibration services

Scale indicators13 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Andritz AG: Austrian industrial group supplying equipment and services for metal processing including strip processing lines, rolling mills, and related equipment. Overlaps with SIJ Ravne Systems in serving steel and aluminum processing customers, but operates as a much broader portfolio company.
• Danieli & C. Italian supplier of equipment and plants for the steel industry, including rolling mill equipment, forged products, and metallurgical machinery. Comparable to SIMATEC and SIROLLS in serving integrated steel mill customers with custom-engineered equipment.
• SMS group: German global plant and machinery manufacturer for the metal processing industry, including rolling mill technology, forging, and complete steel mill construction. Larger and broader than SIJ Ravne Systems, but with overlapping customer base in steel and aluminum producers.
• voestalpine B\u00f6hler Edelstahl: Austrian specialty steel producer with deep roots in tool steel, special steel, and high-performance materials. Comparable to SIJ Group's steel production capabilities; Böhler historically owned Jeklarna Ravne (1918-1945), creating direct historical lineage.

Regional players

• Saarstahl: German specialty steel producer focused on wire rod, bar steel, and forged components for automotive, construction, and industrial applications. Comparable in European specialty steel production but primarily serves German-speaking markets.

Direct peers

• Bodycote: Global provider of heat treatment services including specialized processes for tools, dies, and industrial components. Comparable to the in-house heat treatment technology SIJ Ravne Systems applies to its knives and rolls, though Bodycote operates as a pure service provider.
• Lehigh Heavy Forge: US-based open-die forge producing large forged components including forged rolls for steel mills and rolling equipment. Comparable in metallurgical capabilities and target customer base of steel mill operators.
• Villares Rolls: Brazilian manufacturer of forged cast rolls and forged steel rolls for hot and cold rolling mills serving steel, aluminum, and non-ferrous metal industries. Directly comparable to SIROLLS in product category, customer base, and forging technology.
• Aichelin Group: Austrian manufacturer of industrial heat treatment furnaces and equipment for automotive, rolling, and tool steel applications. Comparable to SIJ Ravne Systems' heat treatment technology and customer overlap in tool and roll steel processing.
• Friedrich Kocks GmbH: German manufacturer of rolling mill equipment, reducing and sizing blocks, and roll machining systems for steel and non-ferrous metal producers. Directly comparable in rolling mill equipment product category to SIROLLS, though narrower in product range.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sij-ravne-systems

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 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 SIJ Ravne Systems