What Sideralba does

Sideralba S.p.A., headquartered in Acerra (Naples) and founded in 1993, is an Italian steel processing and distribution company operating as the primary industrial entity within the family-owned Gruppo Rapullino. The company manufactures coils, welded tubes, plain sheets, corrugated sheets, steel strips, and open profiles, with annual supply capacity exceeding 600,000 tonnes distributed across four production sites: Acerra (tube production, 150,000 sqm total area), Basciano (open profiles, 15,000 sqm), Bizerte in Tunisia via the 50/50 SM Tunis Acier S.A. joint venture with Marcegaglia Carbon Steel (300,000 tonnes of coil capacity on 100,000+ sqm with port quay access), and the recently acquired Misinto plant (Lombardy) from Gruppo Eusider. EMMEGI S.p.A. (La Nuova Meridionale Grigliati), a wholly-owned subsidiary, adds approximately 12,000 tonnes/year of electrofused grating, fencing, and gates. The technology stack relies on conventional tube profiling lines, slitters, and a new profiling machine capable of processing thicknesses up to 8 mm, with "Industry 4.0" integration referenced but not specified in detail.

The business model is B2B hardware sales of commodity-grade and semi-finished steel products under unit pricing with downloadable catalog price lists (e.g., a March 24, 2025 price list for carbon steel welded tubes). Sales are direct, phone/email-led, and supported by field presence at major European trade fairs (Made in Steel, Tube Düsseldorf, Euroblech), with geographic coverage spanning Italy, Germany, Spain, France, Malta, the UK, and the Netherlands in Europe, plus African and Arab markets accessed via the Tunisian facility. An intermodal green logistics service (Bizerte–Milan in 7 days) with Serapide Trans / ASTRE Italia underpins the North Africa-to-Europe corridor. The company is family-controlled across three Rapullino generations, formalized in 2022 through a family pact establishing a Holding structure; Luigi Rapullino serves as CEO and CFO Daniele Palombi reported a €12M net financial position at the 2022 Bank Day alongside a 30+ million euro investment plan. Approximately 600 employees are spread across the group. Revenue is not publicly disclosed; the company funds operations through organic cash flow, a 2021 bond issuance, and bank relationships, with no external private equity or venture capital involvement.

Name

Sideralba

Legal name

SIDERALBA SPA

Website

https://sideralba.it

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Sideralba S.p.A. is a family-owned Italian steel processor that manufactures and distributes over 600,000 tonnes annually of coils, tubes, sheets, strips, and open profiles across four production sites in Italy and Tunisia, serving construction, infrastructure, agriculture, automotive, mechanical, and carpentry sectors.

Ownership category

akta.pro rank

Product category

Steel Manufacturing

SIC

Steel Pipe & Tubes (3317), Sheet Metal Work (3444)

akta.pro primary industry

Long Products Manufacturing (Rebar, Wire Rod, Merchant Bar, Sections/Beams) (IMAKABAH)

Keywords

• Steel coils production
• Welded steel tubes
• Galvanized steel sheets
• Structural steel profiles
• Steel manufacturing services

Headquarters

HQ city

Naples

HQ country

Italy

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Technology or R&D, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Steel Products Sales: Production and commercialization of steel products including coils, tubes, strips, sheets and open profiles. Over 600,000 tonnes per year supply capacity.
2. Manufacturing Services: Custom steel processing and manufacturing services with certifications for CE marking and structural steel execution (UNI EN 1090)

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels9 records

Core offering

Sideralba manufactures and supplies over 600,000 tonnes per year of steel products including coils, welded tubes, strips, sheets, and open profiles. The company operates four production sites across Italy (Acerra, Basciano, Gioia del Colle, Misinto) and Tunisia (Bizerte), serving construction, agriculture, infrastructure, automotive, mechanical, and carpentry industries with CE-certified structural steel products.

Product overview

Sideralba is a steel production and distribution company that manufactures and markets over 600,000 tonnes annually of coils, tubes, strips, sheets, and open profiles. The product portfolio includes: (1) Coils in galvanized, hot-rolled, cold-rolled, and pickled variants produced at Italian and Tunisian facilities; (2) Welded pipes/tubes in black, pickled, galvanized, corten, cold-rolled, magnelis, and pre-painted grades, produced at the Acerra and Misinto plants with diameters from 12mm to 76mm; (3) Plain sheets and steel strips processed from coils; (4) Corrugated sheets for construction applications; (5) Open profiles manufactured at the Basciano plant with thickness capabilities up to 8mm; and (6) Related grating and fencing products through affiliated company EMMEGI. Sideralba supplies steel products across six key sectors: industrial building/construction, agriculture, infrastructure, mechanical appliance industry, automotive, and carpentry.

Differentiator

Problem solved

Functional benefit

Brands

• SM Tunis Acier S.A. Joint venture company (Sideralba Spa and Marcegaglia Carbon Steel Spa) managing steel coils production in Bizerte, Tunisia
• EMMEGI (La Nuova Meridionale Grigliati)

Products and services

• Steel Coils Flat steel products available in galvanized, hot-rolled, cold-rolled, and pickled variants. Produced at Italian and Tunisian facilities with annual output exceeding 600,000 tonnes. Used for construction, infrastructure, agriculture, automotive, mechanical and carpentry industries.
• Welded Pipes and Tubes
• Plain Steel Sheets
• Steel Strips
• Corrugated Sheets
• Open Profiles
• EMMEGI Grating and Fencing

Quantifiable outcome

• Environmental Product Declaration (EPD) certified for Acerra and Basciano sites demonstrating commitment to sustainability
• +3 more outcomes

Named customers6 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Bertolotti IndustriescoreTechnology or Integration · 15 May 2025Strategic partnership for the design, construction and integration of a high-complexity automatic logistics system. Bertolotti Industries will design and implement advanced industrial automation solutions to optimize operational efficiency, improve traceability, reduce handling and storage times, and ensure maximum workplace safety.
• Marcegaglia Carbon Steel SpacoreStrategic or Co-development Partner · 1 March 2022Equal joint venture partner in SM Tunis Acier S.A. resulting in landmark management of former Sideralba Maghreb operations. Located in Bizerte Industrial Economic Park, Tunisia.
• Serapide Trans (ASTRE Italia)coreStrategic or Co-development Partner · 29 March 2018Joint intermodal transport service between Italy and Tunisia connecting Bizerte-Milan-Bizerte in 7 days. Enables connection of Sideralba Maghreb production plant to Northern Italy markets. 180 km road, 670 km sea, 750 km rail transport. Sustainable logistics with only 9% road transport impact.
• ASTREminorStrategic or Co-development Partner · 29 March 2018European network of PMI for transport and logistics with 400+ distribution points in 10+ EU countries. 161 members with global turnover of 2.7 billion euros, 27,000+ registrations and 20,000+ employees.
• INVITALIAminorOthersItalian national agency for inward investment promotion and economic development. Referenced in Investor Relations section of website.
• Promozione AcciaiominorOthersItalian steel promotion association
• Unindustria NapoliminorOthersIndustrial association of Naples province
• FederacciaiminorOthersItalian steel federation
• ELITEminorOthersELITE network for business growth and internationalization support

Scale indicators15 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Tenaris: Global leader in seamless and welded steel pipes for energy and industrial applications. Comparable in tubular steel products and CE-certified structural grades though operating at much larger scale and with different end-market mix.
• AFV Beltrame Group: Italian-led family-owned producer of merchant bars, beams, and reinforcing steel with European mills. Comparable family-controlled industrial model and downstream long-products focus relevant to Sideralba's open profiles and structural tubes.
• Marcegaglia: World's largest independent steel processor and Sideralba's equal joint-venture partner in SM Tunis Acier S.A. Marcegaglia produces coils, tubes, and sheets from carbon steel across Europe, making it the closest like-for-like comparator for Sideralba's product mix and downstream model.
• Riva Group: Italian family-owned steelmaker producing flats, longs, and downstream products including tubes, with plants across Italy and Europe. Closely comparable family-owned industrial model, Italian footprint, and downstream-focused portfolio.
• Arvedi Group: Italian integrated steel producer specializing in flat products via thin-slab casting and downstream processing. Comparable Italian ownership structure, integrated coil-to-finished-product model, and European distribution.
• Acciaierie d'Italia (ex Ilva): Italian integrated steelmaker (formerly Ilva) from which Sideralba acquired the Tunisian assets in 2017. Overlaps in flat products and serves the same Italian domestic construction and infrastructure market with significant EU regulatory entanglement relevant to Sideralba.

Broad incumbents

• SSAB: Nordic high-strength steel producer with European operations offering premium flat and tubular grades. Competes with Sideralba in structural tubes and structural hollow sections for the construction and infrastructure segments.
• voestalpine Steel Division: Austrian integrated steel producer with high-grade flat products serving automotive, energy, and construction. Comparable in industrial-grade flat and tubular products targeting European premium customers, though at significantly larger scale.
• ArcelorMittal Europe: Europe's largest integrated steelmaker with flat products, tubular products, and downstream processing capacity. Although vertically integrated upstream, it overlaps with Sideralba across coils, tubes, and structural hollow sections serving construction and automotive customers.
• thyssenkrupp Steel Europe: Major European integrated flat-steel producer supplying automotive, construction, and processing industries. Overlaps with Sideralba on galvanized coils, sheets, and structural-grade flat products through a much broader portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/hashtag/sideralba
• Facebookfacebook.com/Sideralba
• LinkedInlinkedin.com/company/sideralba-s.p.a

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries5 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 Sideralba