CMN

What CMN does

CMN — Manutenção Industrial e Naval, Conservação e Serviços, Lda. — is a Portuguese industrial metalworking and services company headquartered in Aldeia de Paio Pires, Seixal, Portugal. Founded in 1992 and operating as a subsidiary of the JRC Group (a 600+ employee industrial services platform), CMN delivers three integrated lines of work: manufacturing (storage tanks, metallic structures, prefabricated piping spools, and industrial equipment in steel, stainless steel, aluminium, and other alloys), assembly (static and dynamic equipment, pressure vessels, mechanical assembly of skids and modules, and electrical/instrumentation work), and maintenance (mechanical, electrical, instrumentation, plant shutdowns, predictive and condition-based maintenance, and technical assistance). Since 2007 the company has built a dedicated specialization in LNG tank manufacturing, which is its most differentiated capability.

The company serves enterprise industrial customers across diverse verticals — paper and pulp (Navigator/Portucel), energy (Meivcore LNG tanks), steel and metallurgy (Lusosider, Megasa, Bollinghaus Steel), tobacco (Tabaqueira, Sonangil), automotive (Auto-Europa), hospitality/real-estate (Pestana, Santuário Cristo Rei), and chemicals (Synthomer, Sovena, Zilmo) — and cites more than 100 satisfied customers and 566+ completed projects. Its business model is project-based industrial services and contract fabrication: each engagement is scoped, manufactured in CMN's in-house workshops and/or installed onsite, and monetized as a discrete contract rather than recurring SaaS or volume subscription. CMN also offers predictive and condition-based maintenance, suggesting some ongoing service-contract revenue alongside the project pipeline. The company is privately held under Portuguese Lda. (limited-liability) structure.

Underlying technical capability rests on a multi-disciplinary in-house team covering welding (specialized in stainless steel, aluminium, MIG/MAG/TIG), project management certifications, and continuous training, supported by the broader JRC Group's shared industrial capacity. There is no evidence in the source data of proprietary software, AI/ML systems, or digital platform components; the offering is fundamentally physical manufacturing and onsite industrial services, with LNG tank fabrication as the entry into higher-barrier energy infrastructure work.

Name

CMN

Legal name

CMN - Manutenção Industrial e Naval, Conservação e Serviços, Lda

Website

https://cmn.pt

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

51–100 employees

Short description

CMN is a Portuguese industrial metalworking and onsite services firm specializing in storage tanks, LNG tanks, prefabricated piping, pressure vessels, and mechanical/electrical/instrumentation maintenance, serving enterprise customers across paper, energy, steel, automotive, tobacco, and chemicals sectors.

Ownership category

akta.pro rank

Product category

Industrial Metalworking Services

NAICS

Other General Purpose Machinery Manufacturing (3339), All Other Miscellaneous General Purpose Machinery Manufacturing (333998)

SIC

Special Industry Machinery (No Metalworking Machinery) (3550), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Hazardous Liquids & Specialty Chemical Terminals (Methanol, Solvents, Sulfur) (EUALAEAL)

akta.pro secondary industries

Piping, HVAC & Fluid Systems (Fuel, Ballast, Firemain, Refrigeration) (TLAHAMAF), Piping, Mechanical & Auxiliaries Repair (Pumps, Valves, Heat Exchangers, Boilers) (IMAJAFAE)

Keywords

• Industrial metalworking services
• Storage tank fabrication
• LNG tank construction
• Industrial maintenance services
• Prefabricated piping systems

Headquarters

HQ city

Marco

HQ country

Portugal

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Manufacturing Services: CMN manufactures storage tanks, metal structures, prefabricated piping, and industrial equipment. Revenue is generated through project-based fabrication contracts with controlled processes and certified materials.
2. Industrial Assembly Services: CMN carries out complex industrial assembly work including static and dynamic equipment, pressure vessels, storage tanks, steel structures and complete piping systems. Revenue generated through project-based assembly contracts.
3. Industrial Maintenance Services: CMN provides comprehensive mechanical and electrical maintenance services including instrumentation and scheduled shutdown operations. Revenue from ongoing maintenance contracts and scheduled shutdown services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

CMN - Manutenção Industrial e Naval, Conservação e Serviços, Lda manufactures and repairs storage tanks, metal structures, prefabricated piping, and industrial equipment, and carries out industrial assembly and mechanical/electrical maintenance services for heavy industry clients. Since 2007 the company has specialized in LNG (liquefied natural gas) tanks, executing projects end-to-end from its own workshops at the Casal do Marco Industrial Estate in Aldeia de Paio Pires, Portugal.

Product overview

CMN is an industrial metalworking and maintenance company offering three core service areas: Manufacturing (Fabrico) of storage tanks, metal structures, prefabricated piping, and industrial equipment; Montages (Assembly) of static and dynamic equipment, pressure vessels, storage tanks, metal structures, and complete piping systems; and Maintenance services including mechanical and electrical work, instrumentation, and scheduled shutdowns. The company executes various construction and industrial projects including steel structures, piping systems, and roof installations for clients across industrial, construction, and hospitality sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Fabrico (Manufacturing)

Quantifiable outcome

• 566+ completed projects demonstrating established track record
• +2 more outcomes

Named customers14 records

Segments4 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

One partnership is on record.

• JRC GroupcoreOthersCMN - Manutenção Industrial e Naval, Conservação e Serviços, Lda is an integral part of the well-established JRC Group. The company leverages the group's resources and reputation while maintaining its specialized focus on metalworking and industrial maintenance services.

Scale indicators5 records

Recent moves6 records

Expansion highlights3 records

Direct peers

• Boccard: Boccard is a French-headquartered industrial services and metalworking specialist providing piping, boiler, and process equipment fabrication. It is a direct peer of CMN in prefabricated piping, pressure-vessel assembly, and industrial maintenance.
• TGE Gas Engineering: TGE Gas Engineering designs and fabricates LNG storage tanks, terminals, and gas-handling systems globally. It is the closest direct peer to CMN's LNG tank specialization, targeting the same midstream LNG customers with engineered tank solutions.
• Chart Industries: Chart Industries manufactures cryogenic equipment, including LNG storage tanks and cold-box systems. Its LNG tank business overlaps directly with CMN's specialization since 2007, serving industrial gas and energy customers with similar certified pressure-vessel products.
• Babcock Wanson: Babcock Wanson is a European supplier of industrial boilers, MRO services, and fluid-handling equipment. It is a direct peer to CMN's pressure-vessel, mechanical, and electrical industrial maintenance offerings.
• Cryolor: Cryolor is a European specialist in cryogenic tanks and equipment for LNG, industrial gases, and energy storage. It is a direct peer in LNG tank fabrication, sharing CMN's niche focus on certified cryogenic pressure equipment.
• Hamon Group: Hamon delivers industrial cooling, heat-transfer, and MRO services for power, oil & gas, and heavy industry. It overlaps with CMN's maintenance line — instrumentation, shutdowns, and mechanical/electrical services for industrial facilities.

Regional players

• Damen Shipyards: Damen is a Dutch marine and industrial services group with ship repair, industrial maintenance, and metalworking capabilities. As a regional player (Netherlands-based) operating in marine/industrial MRO spaces, it is comparable to CMN's naval-industrial maintenance scope reflected in its legal name.
• Felguera Melt: Felguera Melt is a Spanish metalworking and industrial services group active in energy, petrochemicals, and heavy industry. It is a regional peer to CMN for Iberian industrial fabrication and maintenance work.

Broad incumbents

• Siemens Energy (incl. former Dresser-Rand): Siemens Energy (formerly Dresser-Rand) supplies large-scale rotating equipment, compression, and oil-and-gas machinery. It is a broad incumbent serving overlapping end markets in LNG and industrial gas, but at significantly greater scale and breadth than CMN.
• CIMC Enric (CIMC Tank): CIMC Enric is a large, established manufacturer of LNG/cryogenic tanks, tank containers, and clean-energy equipment serving global customers. It is a broader incumbent versus CMN's smaller specialist LNG tank fabrication business.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 CMN