- MACOGA expansion joints were installed on FCC units in Saudi Arabia, a BM-C-33 FPSO in Brazil, and the Hinkley Point C nuclear plant in the UK during 2025.
- Founded in the 1970s in Ordes, A Coruña, Spain, by the Concheiro family, MACOGA remains privately owned.
- The manufacturer’s expansion joints operate in more than 90 countries across oil and gas, power generation, marine and defense.
- MACOGA holds ASME U-Stamp, ISO 9001, ISO 14001 and ISO 45001 certifications, alongside EJMA membership.
- Clients include Shell, ExxonMobil, BP, TotalEnergies, UOP and Saudi Aramco.
- MACOGA is confirmed to exhibit at CHEMUK 2026, expanding its chemical and process industry presence.
MACOGA expansion joints were installed across refinery FCC units in Saudi Arabia, a rectangular Alloy 625 joint on Brazil’s BM-C-33 FPSO project, and safety-critical bellows for the UK’s Hinkley Point C nuclear plant in 2025 — a spread that illustrates how far the Spanish manufacturer’s engineering has moved beyond its refining core.
Company Overview
MACOGA is a privately held expansion joint manufacturer headquartered in Ordes, A Coruña, Spain, founded in the early 1970s by Manuel Concheiro and his sons. The company began as a small workshop serving Spanish industry before moving into custom-engineered metal and rubber bellows, and now exports to more than 90 countries.
MACOGA holds ASME U-Stamp certification (obtained 1997), ISO 9001, and CE Marking, and is a member of the Expansion Joint Manufacturers Association (EJMA). In 2025 the company added ISO 14001 (Environmental Management) and ISO 45001 (Occupational Health and Safety), and secured Spanish Ministry for the Ecological Transition (MITECO) approval for its 2022–2023 carbon footprint calculations.
MACOGA Expansion Joints: Products & Engineering Capabilities
MACOGA’s core product range covers metal expansion joints (single and multi-ply, 15mm to 10,000mm diameter), fabric expansion joints for high-temperature exhaust systems, and rubber expansion joints, all designed to EJMA, ASME VIII Div. I App. 26, and EN 14917 standards. Configurations include Double Gimbal, Spent Catalyst Standpipe, and refractory-lined designs built for FCC reactor-to-fractionator lines.
Beyond fabrication, MACOGA runs an on-site services division covering field inspections, installation supervision, and emergency clamshell replacement — a capability the company used in 2025 to complete a UK refinery clamshell swap during an unplanned shutdown. Design work draws on finite element analysis and pipe stress modelling, supporting projects ranging from 0.6mm clamshell bellows to large-diameter refractory-lined units for severe operating conditions.
2026 Projects & Developments
MACOGA’s 2025 project list spanned refinery turnarounds in Scandinavia and the UK, multiple FCC expansion joint packages for Saudi Arabian refineries, and installation supervision at Argentina’s RaÃzen refinery. In the power sector, the company supplied bellows for an atomic fusion energy project in the United States and for Middle East refining and export infrastructure comparable in scale to Saudi Aramco’s Ras Tanura and Yanbu terminals.
Marine and defense work included high-temperature fabric expansion joints for the Spanish Navy’s amphibious assault ship Juan Carlos I (L-61) and for one of the world’s most advanced polar research vessels. Chemical and fertilizer sector deliveries included a U-Stamp certified high-pressure joint for a KBR-licensed fertilizer plant in Egypt and PTFE-lined joints for Saudi petrochemical operations.
Looking into 2026, MACOGA has confirmed participation in CHEMUK 2026 and continues contributing to the newly released EJMA 11th Edition design standards, alongside expanding activity in waste-to-energy and hydrogen-ready power systems.
MACOGA in the Global Expansion Joint Market
MACOGA competes in a specialist manufacturing segment where reliability under extreme pressure, temperature and cyclic loading matters more than price. The company’s 2025 activity at ADIPEC in Abu Dhabi and the SABIC Technical Meeting positioned it alongside the licensors and EPC contractors that specify expansion joints on refinery and terminal construction projects, rather than competing directly with tank fabricators or terminal operators.
MACOGA’s regional footprint is broadest across Europe, the Middle East and the Americas, with a growing presence in nuclear and defense applications that sit outside the traditional oil and gas client base most expansion joint manufacturers rely on.
MACOGA Expansion Joints: Company Snapshot
| Category | Detail |
|---|---|
| Founded | Early 1970s |
| Headquarters | Ordes, A Coruña, Spain |
| Ownership | Privately held (Concheiro family) |
| Core business | Metal, rubber and fabric expansion joints; on-site services |
| Markets served | 90+ countries |
| Key certifications | ASME U-Stamp, ISO 9001, ISO 14001, ISO 45001, CE Marking, EJMA member |
| Key sectors | Oil & gas, power generation, marine & defense, water & mining, chemical & petrochemical |
| Notable clients | Shell, ExxonMobil, BP, TotalEnergies, UOP, Saudi Aramco |
Source: MACOGA 2025 Highlights report.
What does MACOGA specialise in?
MACOGA designs and manufactures metal, rubber and fabric expansion joints for refineries, power plants, marine vessels, and chemical and water infrastructure, alongside on-site installation and inspection services.
Where is MACOGA headquartered?
MACOGA is headquartered in Ordes, A Coruña, in northern Spain, and exports to more than 90 countries.
What certifications does MACOGA hold?
MACOGA holds ASME U-Stamp, ISO 9001, ISO 14001 and ISO 45001 certifications, CE Marking, and membership of the Expansion Joint Manufacturers Association (EJMA).
What MACOGA expansion joint projects were delivered in 2025?
2025 projects included FCC expansion joints for Saudi Arabian refineries, a rectangular Alloy 625 joint for Brazil’s BM-C-33 FPSO, bellows for the UK’s Hinkley Point C nuclear plant, and expansion joints for the Spanish Navy’s Juan Carlos I amphibious assault ship.
Who owns MACOGA?
MACOGA is a privately owned, family-run company, founded by Manuel Concheiro and his sons in the early 1970s.