Mayr and Wilhelm

What Mayr and Wilhelm does

Mayr & Wilhelm GmbH & Co. KG is a fourth-generation, family-owned German manufacturer specializing exclusively in shell-and-tube heat exchangers (Rohrbündel-Wärmetauscher) for refineries and the chemical industry. Founded in 1892 as a copper forge and focused on heat exchanger production for the past 70 years, the company operates from a 12,000 m² headquarters in Buchholz in der Nordheide (relocated from Hamburg in 2023) and a 4,600 m² production facility in Grimma, with combined capacity for heat exchangers up to 120 tonnes and up to 300 units/replacement components per year. The product portfolio comprises custom shell-and-tube units in all TEMA types, plus two licensed proprietary technologies: Twisted Tube® (from Koch Heat Transfer, held since 2004) and Helixchanger® (helical baffle design from McDermott/Lummus, held since 1998).

The business operates as a direct-sales B2B industrial equipment manufacturer with three revenue streams: custom heat exchanger manufacturing, repair and maintenance services (including re-tubing, seal surface machining, weld overlay), and shutdown coordination. All products are custom-engineered per customer specifications covering a wide envelope (2–105 t weight, 1–25 m length, –40 °C to +500 °C, –1 to >300 bar) and challenging service conditions including acid gas, H2S, and phosgene service. Pricing is quote-based with no public disclosure. Customer concentration is in two primary verticals: oil refineries (HD preheaters, sulfur condensers, oil coolers, reactors) and large-scale chemical industry (falling film evaporators, specialty process applications). The company holds comprehensive certifications (PED 2014/68/EU, DIN EN ISO 9001, AD 2000 HP0, DIN EN ISO 3834-2, EN 1090-2 EXC2, ASME U-Stamp, Austrian §14 Kesselgesetz), enabling global pressure-equipment market access, and operates a 24/7 emergency response capability including nights and weekends for unplanned plant shutdowns.

Name

Mayr and Wilhelm

Legal name

Mayr & Wilhelm GmbH & Co. KG

Website

https://mayr-wilhelm.de

Company type

Private

Founded year

1892

Operating status

Operating

Headcount range

51–100 employees

Short description

Mayr & Wilhelm is a fourth-generation, family-owned German manufacturer of custom shell-and-tube heat exchangers serving oil refineries and the chemical industry, offering licensed Twisted Tube® and Helixchanger® technologies alongside 24/7 repair and shutdown services.

Ownership category

akta.pro rank

Product category

Industrial Heat Exchanger Manufacturing

NAICS

Power Boiler and Heat Exchanger Manufacturing (332410), Power Boiler and Heat Exchanger Manufacturing (33241), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Heating Equipment, Except Electric & Warm Air Furnaces (3433), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

akta.pro secondary industries

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC), Waste Heat Recovery & Heat Integration (HRSG/ORC, Pinch Analysis, Heat Exchangers) (EUABAJAF)

Keywords

• Shell-and-tube heat exchangers
• Industrial heat exchanger manufacturing
• Heat exchanger repair services
• Refinery process equipment
• Chemical industry heat transfer

Headquarters

HQ city

Buchholz In Der Nordheide

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Heat Exchanger Manufacturing: Design, engineering, and manufacturing of custom shell-and-tube heat exchangers according to customer specifications. Products range from 2t to 105t weight, 1m to 25m length, 300mm to 4000mm diameter, with design temperatures from -40°C to +500°C and pressures from -1 bar to >300 bar.
2. Repair and Maintenance Services: Comprehensive repair, restoration, and maintenance services including re-tubing, seal surface machining, weld overlay, baffle replacement, and nozzle exchange. Available for emergency shutdowns with 24/7 response including nights and weekends.
3. Shutdown Coordination Services: Full-service shutdown coordination including planning, preparation, damaged component pickup, material procurement, repair execution, non-destructive testing, and TÜV acceptance. Coordinators serve as single point of contact on-site.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels1 record

Core offering

Mayr & Wilhelm plans, manufactures, and repairs custom shell-and-tube heat exchangers (Rohrbündel-Wärmetauscher) for refineries and chemical industry. The company operates in all TEMA types and offers specialized licensed technologies (Twisted Tube® and Helixchanger®), along with engineering, repair, retubing, and 24/7 shutdown coordination services.

Product overview

Mayr & Wilhelm is a family-owned manufacturer of shell-and-tube heat exchangers founded in 1892, specializing in custom-designed Rohrbündel Wärmetauscher (shell-and-tube heat exchangers) for refineries and chemical industry. The product portfolio consists of three main product lines: standard Rohrbündel Wärmetauscher (available in all TEMA types with various configurations), Twisted Tube® (licensed twisted tube technology for enhanced heat transfer), and Helix-Rohrbündel®/Helixchanger® (licensed spiral baffle technology for improved efficiency). The company complements its products with services including planning & manufacturing, repairs & maintenance, shutdown coordination, and retubing services.

Differentiator

Problem solved

Functional benefit

Brands

• Helix-Rohrbündel®: Shell-and-tube heat exchanger with helical baffle design that provides higher thermal efficiency, reduced fouling, and extended cleaning intervals compared to conventional designs.
• Twisted Tube®

Products and services

• Rohrbündel Wärmetauscher (Shell-and-Tube Heat Exchangers) Custom-designed shell-and-tube heat exchangers for refineries and chemical industry, available in all TEMA types with options for fixed or removable tube bundles, U-tube bundles, and floating head designs. Designed for challenging process conditions including sour gas, H2S, and phosgene service.
• Planung & Herstellung (Planning & Manufacturing) Custom design and manufacturing of heat exchangers from concept to completion, including individual solutions based on TEMA types and special requirements for sour gas, H2S service, and phosgene service. Specifications range from 2t to 105t weight, 1m to 25m length, 300mm to 4000mm diameter, with design temperatures from -40°C to +500°C and pressures from -1 bar to >300 bar.
• Reparaturen & Instandsetzung (Repairs & Maintenance) Professional repair and restoration services for shell-and-tube heat exchangers including retubing, seal surface machining, overlay welding, tube sheet work, and nozzle replacement. Available for emergency shutdowns with 24/7 response including nights and weekends.
• Stillstandsservice (Shutdown Service) Comprehensive shutdown coordination service including planning, preparation, damage assessment, material procurement, repair execution, non-destructive testing, and TÜV acceptance. Coordinators serve as single point of contact on-site.
• Neuberohrungen (Retubing) Economical tube replacement service for heat exchangers, significantly faster than new construction or on-site repairs, including night and weekend availability for emergency situations.

Quantifiable outcome

• Up to 300 heat exchangers and replacement components delivered/repaired per year
• +3 more outcomes

Named customers2 records

Segments2 records

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

One partnership is on record.

• Koch Heat TransfercoreTechnology or Integration · 1 January 2004Partnership for Twisted Tube® heat exchanger technology. Mayr & Wilhelm has been offering this technology since 2004, providing customers with advanced twisted tube solutions for improved heat transfer, vibration-free operation, and reduced fouling. The technology has been successfully deployed in hundreds of units since 1985.

Scale indicators6 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• Koch Heat Transfer (Chart Industries): Original licensor of the Twisted Tube® technology that Mayr & Wilhelm deploys, and a major global manufacturer of heat transfer equipment serving process industries. Direct technology and competitive overlap in shell-and-tube and twisted-tube heat exchangers for refineries and chemicals.
• Lummus Technology (McDermott): Licensor of the Helixchanger® helical-baffle technology used by Mayr & Wilhelm and a leading process-licensing and heat-transfer equipment provider for the refining and petrochemical industries.
• Kelvion: European-based manufacturer of shell-and-tube, plate, and finned heat exchangers serving petrochemical, refinery, and power markets. Closely comparable in product mix and customer base.
• Funke Wärmeaustauscher Apparatebau: German specialist manufacturer of shell-and-tube and plate heat exchangers for chemical, petrochemical, and refinery applications. Closest direct national competitor with comparable product range and customer base.
• API Heat Transfer: Manufacturer of shell-and-tube, plate, and air-cooled heat exchangers for industrial process applications including refining, chemical, and power generation. Comparable in product scope and end-market focus.

Broad incumbents

• GEA Group: Large German industrial group with a dedicated heat exchanger business serving food, chemical, and process industries. Comparable in geography and end-market breadth, though much larger and more diversified.
• Alfa Laval: Global leader in heat transfer, separation, and fluid handling — a dominant supplier of plate, shell-and-tube, and spiral heat exchangers to refineries and chemical plants worldwide.
• SPX Heat Transfer (SPX Technologies): Global supplier of heat transfer equipment including shell-and-tube units for petrochemical, refining, and power markets. Overlaps in technology and customer segments though operates at significantly larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Mayr-Wilhelm-GmbH-CoKG-100057580353760
• LinkedInlinkedin.com/company/mayrwilhelm

Compliance6 records

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 Mayr and Wilhelm