Carbon steel tubes
The world’s widest range of welded tubes in terms of steel grades and dimensions.
A strategic integration
for sustainable growth
As part of the Marcegaglia group – a global industrial organization comprising 36 production plants across Europe and beyond – Marcegaglia Carbon Steel operates within a fully integrated and controlled value chain, drawing strength from shared know-how, advanced technology and a common pursuit of excellence. This structure ensures complete traceability, consistent quality and a reliable, high-performing supply chain that serves customers worldwide.
Among the Group’s most strategic sites, the Fos-sur-Mer plant – located within the Marseille-Fos Port, the largest in France and the Mediterranean – plays a pivotal role in expanding Marcegaglia’s production and logistics capacity. Recognized by the French government as a Project of Major National Interest (PINM), Fos-sur-Mer reflects the Group’s dedication to sustainable and innovative steelmaking, supplying nearly 30% of Marcegaglia’s carbon steel requirements.
Together with the Group’s privately owned port and rail terminals in Ravenna, San Giorgio di Nogaro and Bizerte, Fos-sur-Mer strengthens Marcegaglia’s vertically integrated logistics network, offering direct sea access, efficient road connections and robust railway links, ensuring fast, flexible and dependable delivery across Europe and beyond.









The world’s widest range
After the initial steel transformation, and within its fully controlled value chain, Marcegaglia Carbon Steel develops one of the world’s broadest ranges of welded carbon steel tubes, supported by more than 150 processing lines. Produced from hot-rolled, cold-rolled and galvanized strip, these tubes cover an exceptionally wide variety of applications and ensure full suitability for subsequent processing and fabrication.
Marcegaglia’s extensive product range serves every major market segment, combining industrial scale with flexibility. Thanks to the unique structure of its production network, the company builds strong, long-term partnerships with customers, creating genuine synergies that enhance performance, efficiency and innovation across the entire value chain.
Tubes for structural applications
Cost-efficiency, durability, versatility, recyclability: steel is the sustainable choice for contemporary architecture.
Marcegaglia reply to the sector’s requests with a wide range of cold formed welded tubes for structural uses (CE homologation) and structural hollow sections of non-alloy and fine grain steels, hot finished or cold formed with heat treatments.
Tubes for cardans
Tubes for cardan shafts and mechanical transmissions are designed to provide torsional resistance, durability and dependable performance.
They are used in car axles, truck axles, land treatment, harvesting and forestry, where dynamic loads require high-quality materials and precision manufacturing.
Suitable for honing, skiving and roller burnishing tubes
These tubes are engineered for subsequent internal finishing processes such as honing, skiving or roller burnishing.
Their versatility makes them suitable for earth moving, buildings, material handling and transport, delivering dimensional consistency and dependable performance even under demanding conditions.
Ready to use cylinder tubes H9
Ready-to-use H9 cylinder tubes are designed to deliver high precision and excellent internal surface quality.
They are widely employed in agriculture and lifting applications, ensuring smooth operation, reliability and long service life.
Automotive applications
The automotive industry demands reliable, high-performance and precise materials. Marcegaglia carbon steel meets these requirements with a complete range of coils, strips, sheets and tubes designed to ensure strength, formability and consistent quality.
Used in structural components, safety systems and mechanical parts, Marcegaglia steel guarantees high performance even in critical applications, supporting processes such as stamping, fine blanking and welding. A solid and competitive solution for all major automotive applications.
Tubes suitable for chrome plating
These tubes are developed for hydraulic rod manufacturing and are intended for subsequent chrome plating.
They ensure high surface cleanliness, excellent machinability and mechanical strength, supporting corrosion resistance, durability and top-level hydraulic performance.
Tubes for telescopic cylinders
Tubes for telescopic cylinders guarantee strength, precision and smooth extension and retraction movements.
They are used in light tipping, industrial and agricultural applications, where robustness and long-lasting performance are essential.
Skived and roller burnished cylinder tubes H8
Skived and roller burnished H8 tubes offer extremely tight tolerances and excellent internal surface finishing.
They ensure efficiency, operational stability and durability, making them ideal for high-pressure hydraulic systems and applications requiring maximum reliability.
Tubes for welding and threading
Tubes for welding and threading are unalloyed carbon steel round tubes whose manufacturing standards are regulated by EN 10255.
These tubes are used for conveying gas and water in plumbing and heating systems, in sprinklers or in firefighting systems.
The use of a threaded tubes in the construction of the implants allows screwing, which facilitates installation.
The threads can be of the “male” type, with the mouth on the outside, or the “female” type, with the mouth on the inside.
The threaded end of the pipes is always of the male type, while that of the various fittings can be of the male or female type.
Tubes for the conveyance of water and liquids
Tubes for the conveyance of water and other aqueous liquids are made of non-alloy steel and can be welded or without welding.
They are regulated by EN 10224 standards which envolves industrial water transportation and distribution systems.
Marcegaglia answers to the market needs by offering a wide range carbon steel tubes, in steel grades L235, L275, L355 and of multiple sizes.
Tubes for combustible fluids
Steel pipes for pipelines for combustible fluids are regulated by EN 10208-1 standards which specifies the technical conditions of supply.
These are seamless and welded steel pipes used for the transport of combustible fluids on the ground and mainly used in gas supply systems.
Pressure purposes
Thanks to their certified mechanical performance, Marcegaglia steels are suitable for manufacturing pressure vessels and components used in environments where safety, strength and regulatory compliance are mandatory.
Tubes for micropiles
Tubes for micropiles are structural foundation elements used in the building sector, for consolidation and foundations.
Their main function is to transfer the load, applied to their top, to the deeper soil layers, in order to counteract the geostatic forces and to give stability to the structures in elevation.
They are used to limit the structure’s sagging, to protect the foundations of bridges that fall into the riverbed from erosion or even to create off-shore structures and underpinning interventions.
Agricultural equipment
Steels for agricultural equipment deliver robustness, reliability and long service life.
They are used for fencing, machinery parts, structural elements and livestock systems, ensuring resistance to wear, humidity and aggressive environments typical of agricultural operations.
Winding core precision tubes
Rolling for industrial handling and automation is of great importance in many sectors: the use of conveyor belts and winders allows an increase in production and a better quality of the production environment.
Furthermore, the growing demand for consumer products, required by the development of online commerce, ask logistics companies to reply more and more promptly.
Radiators
Steel radiators are a key element for furnitures, since they can be manufactured in different shapes and in many types.
The most used are standard multi-column, plate, lamellar, up to tubular towel dryers.
Steel radiators are light and space-saving compared to traditional cast iron ones, they are characterized by a refined aesthetic, to sometimes become real design elements integrated into the furniture.
Tubes for oil country tubular goods (OCTG)
OCTG Country Tubular Goods are standardized by API, American Petroleum Institute and there are three main types of OCTG tubes, which includes drill pipes, casing pipes and tubing pipes.
Drill pipes are seamless tubes manufactured to transfer drilling torque the entire length of the pipe, often several kilometers.
Casing pipes are tubes used to line the borehole, which is the actual hole dug into the ground to get to the oil.
Tubing pipes are tubes that goes inside the casing pipe, for delivery the oil and gas to the surface.
Tubes for window and door frames
Marcegaglia manufactures a wide range of precision tubes EN 10305-3 S1, S2, S4 for windows: thanks to its versatility and efficiency, steel is the best choice in for constructions, to guarantee multiple shapes and every possible geometry.
Goal and growth methods
The Marcegaglia group’s strategic goal for the carbon steel welded tube business is to achieve a steady growth in market share within the european scenario.
This is made possible through:
strong supply and production bases
investments in its plants
acquisitions of new production sites
strong focus on environmental, social and governance sustainability
Pillar of growth
raw material
Over 450,000 tons of coils (in addition to the average 500,000 tons on order to suppliers) for welded tube production
production lines
A total of 74 ERW welded tubes production lines in the 7 European plants
work-in progress
130,000 tons of semi-products always in-line to ensure production continuity
finished products in stock
100,000 tons of welded tubes permanently available for sale
Contact us
Carbon steel welded tubes
46040 Gazoldo degli Ippoliti
Mantova – Italy
Cold-drawn welded tubes
24040 Boltiere
Bergamo – Italy
Refrigeration tubes
46040 Gazoldo degli Ippoliti
Mantova – Italy