Leruste & Cie

What Leruste & Cie does

Leruste & Cie is a France-based industrial representation agency founded in 1985 that serves the metallurgical sector across France, Belgium, and Luxembourg. Operating from a headquarters in Villeneuve d'Ascq (Northern France) and a commercial representative in Eastern France, the company functions as the commercial and technical interface between a portfolio of foreign industrial suppliers and local maintenance, project, and purchasing teams at steelworks, rolling mills, forges, tube manufacturers, and metal processing facilities. The business is structured as a Société à responsabilité limitée (SARL) with 7 employees and no disclosed outside investors.

The company's offering is organized into three interconnected product lines representing approximately 15 foreign principals. Mechanical Parts covers wear and sliding plates (Corts Bearing), complex parts and assemblies (Castellini), long-product rolling mill parts (TTS Engineering), rollers and chocks (Habets), oil film bearings (OFB), grinding wheels (Theleico), high-performance castings (Schmidt+Clemens), and rollshop on-site engineering and machining (Corts Engineering). Instrumentation encompasses high-performance infrared pyrometers (Williamson), cameras and sensors for harsh environments (Logika), force measurement (Kelk), optical flatness measurement (Shapeline), and laser-based profile measurement (LAP). Machines include forging machines and manipulators (Dango & Dienenthal), machine tools and finishing lines (Georg), and metal-industry equipment (Lazzari). A standalone European Service Center for Williamson pyrometers provides authorized repair and calibration across the region.

Leruste & Cie monetizes through two primary streams: commission-based sales representation on behalf of its foreign principals, and professional service revenue from the Williamson European Service Center (repair, calibration, and maintenance). Go-to-market is exclusively enterprise field sales: direct engagement with metallurgical industry customers through the Northern France HQ and Eastern France representative. Pricing is not publicly disclosed and is negotiated quote-by-quote based on equipment, volumes, and service scope. The company maintains a bilingual French/English website but does not operate a digital commerce or self-service channel.

Name

Leruste & Cie

Legal name

LERUSTE ET CIE

Website

https://leruste.com

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Leruste & Cie is a France-based industrial representation agency that sells and services specialized mechanical parts, instrumentation, and machines from 15+ foreign suppliers to metallurgical industry customers across France, Belgium, and Luxembourg, including a European Service Center for Williamson infrared pyrometers.

Ownership category

akta.pro rank

Product category

Industrial Equipment Representation for Metallurgical Sector

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Electrical Equipment Manufacturing (33531)

SIC

Wholesale-Electronic Parts & Equipment, Nec (5065), Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Coating, Engraving & Allied Services (3470), Wholesale-Metals Service Centers & Offices (5051)

akta.pro primary industry

EDM & Electrochemical Machining (Wire/Sinker EDM, ECM) (IMAHADAF)

Keywords

• Industrial equipment representation
• Metallurgical equipment distribution
• Rolling mill machinery
• Industrial process instrumentation
• Infrared pyrometer service

Headquarters

HQ city

Villeneuve d'Ascq

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Sales Representation Services: The company acts as a sales representative agency for foreign industrial suppliers in the metallurgical sector, earning commissions on sales of mechanical parts, instrumentation, machines, and engineering solutions to maintenance, project, and purchasing teams.
2. Service and Calibration: European Service Center providing repair and calibration services for Williamson infrared pyrometers, including maintenance contracts and on-demand service for temperature measurement equipment.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Leruste & Cie is an industrial representation agency that sells and supports mechanical parts, instrumentation, machines, and engineering services on behalf of foreign suppliers to metallurgical industry customers in France, Belgium, and Luxembourg. It also operates the European Service Center for Williamson infrared pyrometers, providing repair, calibration, and on-site engineering and machining for rolling mills.

Product overview

Leruste & Cie is an industrial representation agency serving the metallurgical sector across France, Belgium, and Luxembourg. It operates as a multi-brand portfolio of represented suppliers rather than a single product, organized into three interconnected product categories: (1) Mechanical Parts — covering wear and sliding plates (Corts Bearing), complex parts and assemblies (Castellini), long-product rolling mill parts (TTS Engineering), rollers and chocks new/repair (Habets), oil film bearings (OFB), grinding wheels (Theleico), high-performance castings (S+C Schmidt+Clemens), and rollshop on-site engineering and machining (Corts Engineering); (2) Instrumentation — encompassing high-performance infrared pyrometers (Williamson) with a dedicated European Service Center for repair and calibration, cameras and sensors for harsh environments (Logika), force measurement for rolling mills (Kelk), optical flatness measurement (Shapeline), and laser-based profile measurement (LAP); and (3) Machines — including forging machines and manipulators (Dango & Dienenthal), machine tools and finishing lines (Georg), and general metal industry equipment (Lazzari). The company functions as the commercial and technical interface for these foreign suppliers with local maintenance, project, and purchasing teams.

Differentiator

Problem solved

Functional benefit

Products and services

• Wear Plates and Sliding Plates (Corts Bearing) Wear and sliding plates for plate mills, hot rolling mills, and cold rolling mills, including chock plates, column plates, stand bottoms, rocker plates, side guides, and sinter plant rails, featuring patented Corc-g bi-layer steel and through-hardened grades, offered to metallurgical industry customers in France, Belgium, and Luxembourg.
• Complex Parts and Assemblies (Castellini) Supply and repair of complex sub-assemblies manufactured to drawing, including detailed engineering, covering mandrels, spindles, AGC pots, bending blocks, chocks, screws and nuts, globic assemblies, pinions, and gearboxes for metallurgical customers.
• Parts and Sub-Assemblies for Long Product Rolling Mills (TTS Engineering) Parts for finishing blocks such as tapered bushings, pinion shafts, and eccentric covers; guides based on proprietary engineering or customer drawings; and parts for shears, targeted at long-product rolling mill operators.
• Rollers, Chocks – New and Repair (Habets) Manufacturing and repair of rollers for rolling mills (tables, loopers) and strip treatment lines (accumulators, tensioners, guiding), featuring thermal spray coating expertise (arc, HVOF, plasma, powder, wire), and repair of chocks, rolls, and large parts.
• Oil Film Bearings (OFB) Supply of new parts and repair services for oil film bearings, including bushings, rings, seals, and hydraulic nut assemblies, plus on-site training and audits for rolling mill operators.
• Grinding Wheels (Theleico) Custom grinding wheels manufactured in Germany for grinding of rolling mill rolls, springs, centerless bar grinding, and gear tooth grinding.
• High-Performance Casting Products (Schmidt+Clemens / S+C) High-performance castings including centrifugal, static, and precision castings in alloys for very high temperatures and harsh environments; high-alloy steels; dry rolls for industrial furnaces; with precision machining and complex heat treatments.
• Rollshop On-Site Engineering and Machining (Corts Engineering) On-site engineering and machining services for rolling mills, including stand and chock geometry survey and control, modernization/modification engineering, FEM modelling, and on-site machining of stands and chocks.
• High-Performance Infrared Pyrometers (Williamson) Temperature measurement instruments including single-wavelength, dual, and multi-wavelength infrared pyrometers with options for laser or optical sighting, fiber optics, and interfaces for steam, dust, smoke, and flame environments, supported by Leruste & Cie's European Service Center for repair and calibration.
• Cameras and Sensors for Harsh Environments (Logika) Highly protected process cameras, endoscopes, and sensors for blast furnaces, converters, electric arc furnaces, ladle metallurgy, vacuum degassing, continuous casting, and reheating furnaces, including HMD detectors, loop controllers, optical barriers, and IR vision control.
• Force Measurement for Rolling Mills (Kelk) Force measurement equipment for rolling mills including load cells with 5-year warranty, interstand tensiometers with 5-year warranty, fluid pressure transducers, width gauges, laser thickness gauges, and hot profile gauges for forging.
• Optical Flatness Measurement (Shapeline) Optical flatness measurement systems for plate mills, hot rolling mills, and process lines, providing continuous plate flatness measurement for routing and process improvement, with measurements according to standards including I-unit, cross bow, ski, topography, width, and off-center.
• Profile Measurement by Laser Systems (LAP) Laser-based profile measurement systems for measuring diameter, ovality, straightness, and surface defects on wires, bars, tubes, and profiles, designed for hot rolling mills and cold working environments.
• Machines for Forges (Dango & Dienenthal) Forging manipulators, transport manipulators, heavy-load robots, and turntables for forges; deslagging, charging, stoking, and distribution solutions for steelworks and non-ferrous producers; and pipe sizers for petrochemical tube measurement and expansion.
• Machine Tools and Finishing Lines (Georg) Grinding machines for work and back-up rolls, slitting, cut-to-length, inspection, and multi-blanking lines, shears, edge trimmers, scrap cutters, levellers, coilers and decoilers, transformer production lines, and electrical and mechanical retrofits.
• Equipment and Machines for the Metal Industry (Lazzari) Custom manufacturing of complex sub-assemblies with detailed engineering, repair of complex sub-assemblies in workshop, rollshop equipment for work and back-up rolls (chocking/dechocking, chock tilters, roll transfer cars), sawing machines for bars, pipes, slabs, rails and profiles, and machines for API pipe finishing lines including deburring, coupling, and leak testing.
• European Service Center for Williamson Infrared Pyrometers European service center operated by Leruste & Cie providing repair and calibration services for Williamson high-performance infrared pyrometers used in metallurgical applications, with downloadable service presentation documents available.

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

16 partnerships are on record, tiered core.

• WilliamsoncoreStrategic or Co-development PartnerWilliamson is a manufacturer of high-performance infrared pyrometers for temperature measurement. Leruste & Cie operates the European Service Center for Williamson products, providing repair and calibration services. This partnership includes distribution rights for pyrometers used in metallurgical applications including galvanizing, annealing, aluminum, special steels, and non-ferrous metals.
• Dango & DienenthalcoreChannel Partner/ Reseller/ DistributorDango & Dienenthal specializes in machines for forges, tube manufacturers, and steelworks. Products include forging manipulators, transport manipulators, heavy-load robots, turntables, deslagging solutions, charging solutions, and pipe sizing systems for petrochemical applications. Leruste & Cie represents their products in France, Belgium, and Luxembourg.
• GeorgcoreChannel Partner/ Reseller/ DistributorGeorg provides machine tools, finishing lines, components, and retrofits for the metallurgical industry including grinding machines for work and back-up rolls, slitting and cut-to-length lines, shears, levellers, coilers/decoilers, and transformer production lines.
• LazzaricoreChannel Partner/ Reseller/ DistributorLazzari provides equipment and machines for the metallurgical industry including rollshop equipment for back-up and work rolls, sawing machines, and machines for API pipe finishing lines. The company also offers repair of complex machines and sub-assemblies.
• KelkcoreChannel Partner/ Reseller/ DistributorKelk provides force measurement solutions and process measurement equipment for rolling mills including load cells for stands with 5-year warranty, interstand tensiometers, width gauges, laser thickness gauges, hot profile gauges, and fluid pressure transducers.
• Logika TechnologiescoreChannel Partner/ Reseller/ DistributorLogika Technologies provides cameras and sensors for harsh industrial environments including blast furnaces, converters, electric arc furnaces, ladle metallurgy, vacuum degassing, continuous casting, and reheating furnaces. Products include highly protected process cameras, HMD detectors, loop controllers, and optical barriers.
• ShapelinecoreChannel Partner/ Reseller/ DistributorShapeline provides optical flatness measurement systems for plate mills, hot rolling mills, and process lines. Systems enable continuous flatness measurement for routing and process improvement, with measurements following industry standards including I-unit, cross bow, and topography.
• LAP (Laser Applied Technologies)coreChannel Partner/ Reseller/ DistributorLAP provides profile measurement systems by laser technology for wires, bars, tubes, and profiles. Systems measure diameter, ovality, straightness, and surface defects for hot rolling mills and cold working applications, designed for harsh environments.
• Corts BearingcoreChannel Partner/ Reseller/ DistributorCorts Bearing provides wear plates and sliding plates for plate mills, hot rolling mills, and cold rolling mills. Products include plates for chocks, columns, stand bottoms, rocker plates, and side guides, featuring the patented Corc-g bi-layer steel compound.
• Corts EngineeringcoreChannel Partner/ Reseller/ DistributorCorts Engineering provides rollshop on-site engineering and machining services including stand and chock geometry survey and control, modernization/modification engineering, FEM modeling, and on-site machining of stands and chocks.
• CastellinicoreChannel Partner/ Reseller/ DistributorCastellini provides complex parts and assemblies for the metallurgical industry including mandrels, spindles, AGC pots, bending blocks, chocks, screws and nuts, globic assemblies, pinions and gearboxes. Services include manufacture to drawing and repair of complex sub-assemblies.
• TTS EngineeringcoreChannel Partner/ Reseller/ DistributorTTS Engineering provides parts and sub-assemblies for long product rolling mills including parts for finishing blocks (tapered bushings, pinion shafts, eccentric covers), guides, and parts for shears.
• HabetscoreChannel Partner/ Reseller/ DistributorHabets provides rollers, chocks, and related services for rolling mills including thermal spray coating (arc, HVOF, plasma, powder, wire), rolling mill rollers, strip treatment rollers, and repair services for chocks and rolls.
• OFB (Oil Film Bearings)coreChannel Partner/ Reseller/ DistributorOFB specializes in oil film bearings providing parts, service, and repair including bushings, rings, seals, and hydraulic nut assemblies. Services include new supply and repair for rolling mill bearings.
• TheleicocoreChannel Partner/ Reseller/ DistributorTheleico provides grinding wheels manufactured in Germany for grinding of rolling mill rolls, springs, centerless bar grinding, and gear tooth grinding for gears.
• Schmidt-Clemens (S+C)coreChannel Partner/ Reseller/ DistributorSchmidt-Clemens provides high-performance casting products including centrifugal, static, and precision castings, alloys for very high temperatures and harsh environments, high-alloy steels, and dry rolls for industrial furnaces.

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Danieli: Italy-based global supplier of plant and equipment for the metal industry, including rolling mills, forges, and steelworks. Comparable because Leruste's represented brands (Georg, Dango & Dienenthal, Lazzari) compete in adjacent product lines, and Danieli's customer base (European steelmakers) overlaps with Leruste's end market.
• SMS group: German metallurgical plant builder supplying rolling mill, forging, and steelmaking equipment worldwide. Comparable in that it serves the same European steel/forging customers with heavy equipment, instrumentation, and service — the same demand pool Leruste addresses at a smaller scale via third-party representation.
• FLIR Systems (Teledyne FLIR): US-based thermal imaging and measurement equipment manufacturer now part of Teledyne, with industrial temperature sensing products used in metals manufacturing. Comparable to the Williamson pyrometer line in underlying technology and customer use cases, though with a much broader product and geographic reach.
• Endress+Hauser: Switzerland/Germany-based global supplier of industrial process measurement instrumentation, including temperature, force, and analytical sensors widely used in metals processing. Comparable because it addresses the same instrumentation purchase decisions at European steel plants that Leruste addresses via Kelk, Williamson, Shapeline, and LAP.
• Primetals Technologies: Austria/Japan-based metallurgical equipment OEM with deep European footprint in rolling mills and continuous casting. Comparable in customer overlap (European steelworks, rolling mills) and product overlap (rolling mill force/measurement, roll services), though Primetals is far larger and vertically integrated.
• Yokogawa Electric: Japan-based global supplier of industrial automation, control, and measurement instrumentation including force, temperature, and process sensors used in metals manufacturing. Comparable in serving European steel and metals customers with instrumentation adjacent to Leruste's Kelk, Williamson, Shapeline, and LAP lines.
• Andritz (Metals Processing): Austria-based industrial group with a Metals Processing division serving steel, rolling mill, and forging customers in Europe. Comparable in serving the same European metallurgical customer base and offering equipment plus services similar to the Georg/Dango & Dienenthal/Lazzari lines Leruste represents.

Emerging players

• Process Sensors Corporation: US-based manufacturer of infrared temperature sensors and moisture measurement instruments for industrial process applications, including metals. Comparable as a smaller, specialist instrumentation principal competing with Williamson and Kelk for the same European steel plant measurement budgets.

Direct peers

• LumaSense Technologies (Advanced Energy): US-based manufacturer of infrared pyrometers and thermal sensing solutions for industrial process control, owned by Advanced Energy. Directly competes with Williamson in the high-temperature pyrometer category Leruste represents and services across European metallurgical customers.
• AMETEK Land: UK-headquartered manufacturer of non-contact temperature measurement and combustion monitoring instruments for steel, forging, and metals processing. Directly comparable to Leruste's Williamson pyrometer line — same product category, same end customers, same industrial verticals — and a potential principal competitor or principal counterpart.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/leruste-et-cie

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 Leruste & Cie