Top 20 Flange Companies in France (2024)

Founded in 1978, PetroFlange Industries has grown from a small workshop in Marseille's industrial port to a global name in petrochemical flange solutions. What sets them apart? Their obsession with custom alloy steel tube and flange combinations that thrive in harsh petrochemical facilities. "We once designed a flange for a North African refinery that had to withstand 500°C temperatures and sulfur-rich gases," says CEO Marie Dubois. "Three years later, they sent us a photo—no leaks, no corrosion. That's the PetroFlange promise."

Key products include steel flanges (ASME B16.5, EN 1092), stud bolt & nut assemblies, and gasket sets engineered for high-pressure applications. They're also certified for EEMUA 144 standards, making them a go-to for European and Middle Eastern petrochemical giants. Sustainability is another focus: 30% of their raw materials now come from recycled steel, and they've cut carbon emissions by 22% since 2020.

If you've ever sailed on a French cruise ship or relied on cargo ships to deliver goods, chances are MarineLink Flanges played a role. Based in Bordeaux, this family-owned business has been supplying copper nickel flanges and marine-grade components since 1985. "Saltwater is the enemy of metal," explains fourth-generation owner Jacques Leroy. "Our copper & nickel alloy flanges don't just resist corrosion—they outlast the ships they're installed on."

Specialties include marine & ship-building flanges (JIS H3300, BS2871), u bend tubes for engine cooling systems, and threaded fittings for tight spaces below deck. They're a preferred supplier for Naval Group (France's leading shipbuilder) and have recently expanded into offshore wind, providing flanges for underwater turbine pipelines. "Wind farms need the same durability as ships," Leroy notes. "The ocean doesn't care if it's a warship or a windmill—it wants to eat metal. We stop it."

Nuclear energy demands perfection, and NucleaTech Precision delivers. This Lyon-based firm specializes in RCC-M section II nuclear tube and flange systems for France's 56 nuclear reactors (the most in Europe). "One mistake here isn't just a leak—it's a national security issue," says lead engineer Sophie Laurent. "Our flanges meet RCC-M, the gold standard for nuclear components, and we test every single piece three times before it leaves our facility."

Beyond flanges, they produce pressure tubes , alloy steel tube assemblies, and custom stainless steel tube for reactor cooling loops. Their most ambitious project? A flange system for France's next-gen EPR2 reactors, designed to operate for 60 years without maintenance. "Nuclear is the future of clean energy," Laurent adds. "We're building the parts that will keep the lights on—and the planet cool—for generations."

Toulouse isn't just the home of Airbus—it's also where PowerPlant Solutions keeps the lights on. This 2003-founded firm supplies power plants & aerospace components, with a focus on heat efficiency tubes and high-temperature flanges. "A coal-fired plant and a jet engine have more in common than you think," says CTO Alain Moreau. "Both need to transfer heat without losing energy—and both need flanges that won't fail under stress."

Key products: A213 a213m steel tube (boiler tubing), finned tubes for heat exchangers, and welded steel tube (EN 10216-5) for steam pipelines. They're certified for ASME BPVC Section I (power boilers) and work with EDF (France's energy giant) and Airbus on engine cooling systems. "Aerospace is our playground now," Moreau grins. "We're testing a flange for a hypersonic jet prototype—if it can handle Mach 5, a power plant is child's play."

EcoFlow isn't your typical flange company. Founded in 2010, this Strasbourg startup is on a mission to green the industrial sector with sustainable, low-carbon components. "Why use virgin steel when recycled works just as well?" asks founder Amélie Petit. Their custom big diameter steel pipe and flanges are made from 85% recycled material, and they offset 100% of production emissions via reforestation projects in the Amazon.

Focus areas: pipeline works (water, gas, renewable fuels), structure works (green building steel flanges), and carbon & carbon alloy steel for low-pressure systems. They've partnered with Veolia (global water management) to supply flanges for a Parisian wastewater treatment plant and are breaking into hydrogen: "Hydrogen pipelines need ultra-tight seals," Petit explains. "Our bw fittings (butt-welded) ensure no gas escapes—good for the planet, good for safety."

For mega-projects that span continents, GlobalPipe Systems in Lille is the logistical expert. "We don't just make flanges—we deliver solutions," says director of operations Pierre Giraud. "Last year, we shipped 500 custom stainless steel tube flanges to a pipeline in Australia, 200 alloy steel tube fittings to a Canadian refinery, and 100 pressure tubes to a Dubai power plant—all in the same month."

Services include wholesale stainless steel tube and flanges (EN 10210, A53), custom fabrication (3D-printed prototypes for unique projects), and end-to-end logistics (they own a fleet of climate-controlled trucks and partner with Maersk for sea freight). Their claim to fame? Supplying flanges for the TransMed Pipeline, which carries natural gas from Algeria to Europe. "That pipeline crosses deserts, mountains, and the Mediterranean," Giraud says. "Our flanges had to handle sandstorms, earthquakes, and saltwater. They're still going strong after 15 years."

HeatTech, based in Nantes, lives and breathes thermal efficiency. "In power plants, every degree of heat lost is money wasted," says chief engineer René Dubois. "Our finned tubes and heat efficiency tubes maximize heat transfer, and our flanges ensure no energy escapes." Founded in 1992, they specialize in u bend tube assemblies, stainless steel heat exchanger flanges, and copper alloy components for HVAC and refrigeration.

Notable clients include Danfoss (global HVAC leader) and Areva (nuclear energy). They've also cracked the aerospace market, supplying power plant & aerospace flanges for satellite cooling systems. "Satellites can't be repaired—so our flanges have to work perfectly the first time," Dubois laughs. "No pressure, right?"

Extreme cold is a nightmare for industrial equipment—but ArcticFlange in Le Havre thrives on it. This niche manufacturer designs flanges and pressure tubes for sub-zero environments, from Siberian pipelines to LNG (liquefied natural gas) tankers. "Steel gets brittle in the cold," explains product manager Elsa Fournier. "Our nickel alloy flanges stay flexible at -196°C—the temperature of liquid nitrogen."

Key products: B165 monel 400 tube (for LNG), EN 10312 steel pipe , and threaded fittings with ice-resistant coatings. They're a critical supplier for TotalEnergies' Arctic LNG projects and recently developed a flange with built-in heating elements for ultra-cold oil rigs. "In the Arctic, if your flange freezes, you can't just hit it with a wrench," Fournier says. "Our heated flanges keep operations running—even when the thermometer says it's impossible."

Heritage Foundry is proof that old-school craftsmanship still matters. Established in 1890, this Dijon institution uses traditional sand casting alongside 3D modeling to create carbon & carbon alloy steel flanges for structure works (bridges, stadiums, skyscrapers). "We cast flanges for the new Paris Olympics stadium," says foundry master Claude Renoir. "Those flanges don't just hold up the roof—they're part of France's legacy."

Specialties include gbt8162 smls structure pipe flanges, welded steel tube fittings, and steel flanges for architectural projects (think the curved flanges on the Louvre Abu Dhabi's dome). "Architects want flanges that are strong and beautiful," Renoir notes. "We once made a gold-plated flange for a luxury hotel in Monaco. It cost more than my first car, but it looked like art. That's Heritage—function meets pride."

Toulouse's aerospace cluster isn't complete without AeroFlange Advanced. This high-tech firm, spun off from Airbus in 2015, makes power plant & aerospace flanges that are light, strong, and space-ready. "Aircraft engines need flanges that weigh nothing but can handle 10,000 pounds of thrust," says lead designer Claire Moreau. "Our nickel alloy flanges (B167 Ni-Cr-Fe) are 40% lighter than steel but twice as strong."

Products include A269 a269m steel pipe flanges for cabin air systems, finned tubes for avionics cooling, and custom alloy steel tube assemblies for drones. They're also venturing into space: "We're testing flanges for a European Space Agency Mars rover," Moreau reveals. "Mars has dust storms and extreme temperature swings—our flanges need to survive where humans can't go yet."

When it comes to petrochemical facilities , PetroChem Innovations in Lille is a problem-solver. "Refineries have unique needs—corrosive chemicals, high pressure, tight deadlines," says sales director Hélène Dubois. "We don't just sell flanges; we collaborate. Last year, a client needed a custom alloy steel tube flange for a new biofuel process. We designed, tested, and delivered it in 6 weeks. They thought we were crazy—but we did it."

Products include BS2871 copper alloy tube flanges, pressure tubes (ASME B31.3), and finned tubes for heat recovery systems. They're certified for API 5L (pipeline quality) and work with major players like BASF and LyondellBasell. "Biofuels are the future," Dubois adds. "They're more corrosive than crude oil, so we're developing new alloys. The day we can't innovate is the day we close shop."

La Rochelle's ShipShape Marine is all about keeping vessels seaworthy—from fishing boats to superyachts. "A small leak in a fishing boat can sink a livelihood," says owner Michelle Bernard. "Our marine & shipbuilding flanges are built to prevent that." Specialties include threaded fittings (easy to install in tight engine rooms), copper nickel flanges , and gasket kits pre-cut to ship specifications.

They're a favorite among French fishing cooperatives and have recently expanded into luxury yachts, supplying custom sw fittings (socket-welded) for sleek, minimalist engine rooms. "Yacht owners want performance and beauty," Bernard laughs. "We made a flange last year that was polished to a mirror finish. The captain said it was the only part of the engine room he didn't mind showing off."

Grenoble's NukeGuard Systems is the quiet protector of France's nuclear fleet. This specialized firm focuses solely on RCC-M section II nuclear tube flanges and safety-critical components. "Nuclear isn't about 'good enough'—it's about 'absolutely perfect,'" says quality manager Jean-Pierre Moreau. "We test every flange 12 times: ultrasonic, X-ray, pressure, corrosion, impact, fatigue… you name it."

Key products: nuclear-grade steel flanges , stud bolt & nut assemblies (calibrated to 0.01mm tolerance), and gasket materials resistant to radiation. They're certified by the French Nuclear Safety Authority (ASN) and supply EDF's oldest and newest reactors. "We recently retrofitted flanges in a 40-year-old reactor," Moreau notes. "It's like giving a grandparent a new heart—precision is everything."

Montpellier's GreenEnergy Flanges is betting big on renewable energy. "Solar, wind, geothermal—they all need reliable pipes and flanges," says founder Lucas Renoir. "We're the first flange company in France to be carbon-neutral, and we only work with renewable projects." Their products include stainless steel flanges for solar thermal plants, custom big diameter steel pipe for geothermal wells, and finned tubes for biomass boilers.

Notable projects: A 50MW solar farm in Provence (flanges for heat transfer pipes) and a geothermal plant in Alsace. "Geothermal is tricky—hot, mineral-rich water can eat through metal," Renoir explains. "Our alloy steel tube flanges handle it. The plant has been running for 5 years with zero flange issues. That's green energy you can trust."

For projects that need custom everything, PrecisionPipe Fittings in Lyon is the answer. "We once made a flange shaped like a hexagon for a art installation that also doubled as a pipeline," says design lead Camille Dubois. "Most companies say 'no' to weird requests. We say 'let's try.'" Services include custom boiler tubing , custom condenser tube flanges, and 3D-printed prototypes for one-of-a-kind projects.

They work with industries from food processing (sanitary stainless steel flanges) to mining (abrasion-resistant alloy flanges). "A chocolate factory needed flanges that could handle hot cocoa and be cleaned in seconds," Dubois recalls. "We designed a smooth, crevice-free flange. Now they send us a box of chocolates every Christmas. Best feedback ever."

Brest's OffshoreTech Solutions is all about the deep blue. "Offshore oil rigs, wind farms, subsea cables—they're all in hostile environments," says marine engineer Sébastien Leroy. "Our eemua 144 234 cuni pipe flanges and copper nickel flanges are built to withstand 3,000 meters of water pressure." Founded in 2001, they're a key supplier for Equinor (Norwegian offshore giant) and have developed a flange with built-in sensors to detect leaks in real time.

"If a flange leaks 3,000 meters down, you can't just send a diver," Leroy explains. "Our sensors send data to shore—temperature, pressure, corrosion. We can predict failures before they happen." They're also leading the charge in decommissioning: "When an oil rig is retired, we recover and recycle the flanges. The ocean gives us so much—we owe it to keep it clean."

Le Mans isn't just about race cars—it's also where SteamWorks Power keeps power plants running. This specialist in power plants components makes A213 a213m steel tube flanges, heat efficiency tubes , and u bend tubes for boilers and steam turbines. "A power plant's boiler is like its heart," says engineer Thomas Petit. "Our flanges ensure the 'blood'—steam—flows where it needs to, when it needs to."

Certified for ASME B16.34 (valves and flanges), they've supplied components for France's largest coal-to-biomass conversion plant in Lorraine. "Switching from coal to biomass changed everything—different temperatures, different ash," Petit notes. "We redesigned their flanges to handle the new fuel. Now they're saving 10,000 tons of CO2 a year. That's engineering with purpose."

Nancy's AlloyMasters is the go-to for rare and exotic metals. "When a client says, 'We need a flange that can handle liquid sodium,' we say, 'Challenge accepted,'" jokes metallurgist Dr. Isabelle Laurent. Specializing in nickel alloy (B163, B619), incoloy 800 tube (B407), and monel 400 tube (B165) flanges, they serve niche industries like nuclear research, aerospace, and high-temperature furnaces.

"Last year, we made a flange for a fusion reactor in the south of France," Laurent says. "It had to withstand 150 million°C plasma—hotter than the sun. We used a nickel-chromium alloy that melts at 1,800°C. Did it work? The reactor ran for 10 seconds. That's a win in fusion." They also supply rcc-m section ii nuclear tube flanges for medical isotope production. "Isotopes save lives," Laurent adds. "Our flanges help make that possible."

Paris isn't just about romance—it's a maze of underground pipes, and UrbanPipe Systems keeps them connected. This city-based firm supplies pipeline works flanges, carbon & carbon alloy steel fittings, and gbt3091 steel pipe for water, gas, and sewage systems. "Paris's pipes are older than the Eiffel Tower," says operations manager Julien Bernard. "We ｒｅｐｌａｃｅ flanges that were installed in the 1800s—some still in good shape! But most need upgrading to handle modern pressures."

Specialties include threaded fittings (easy to install in tight underground tunnels), gasket sets for leak-free joints, and stud bolt & nut assemblies that resist urban corrosion (road salt, pollution). They're currently working on Paris's Grand Paris Express, a new metro network, supplying flanges for the cooling and ventilation systems. "The metro will carry 2 million people a day," Bernard says. "Our flanges need to be invisible but invincible. That's urban engineering."

Rounding out our list is Lyon's FutureFlange Labs, the industry's R&D powerhouse. "We don't sell flanges—we invent them," says chief innovator Dr. Sophie Giraud. This startup, founded in 2018, uses AI and 3D printing to create next-gen components: "Our AI designs flanges that are 30% lighter and 20% stronger than traditional ones by optimizing material placement. Then we 3D-print them with superalloys."

Current projects include a self-healing flange (uses shape-memory alloys to seal small leaks) and a "smart flange" with built-in IoT sensors (monitors pressure, temperature, and vibration in real time). "The future isn't just about making flanges—it's about making flanges that think," Giraud says. "Imagine a flange that texts you before it fails. That's what we're building." They've partnered with MIT and École Polytechnique to push the boundaries of materials science. "Flanges might seem simple, but there's no limit to innovation. The next big thing in industrial tech could be sitting in our lab right now."