Tubos Reunidos Group

What Tubos Reunidos Group does

Tubos Reunidos Group is a Spanish manufacturer of seamless steel tubes and pipes founded in 1890, headquartered in Bilbao with operating mills in Amurrio and Valle de Trápaga (Spain) and a wholly-owned subsidiary, RDT Inc., in Beasley, Texas. The group produces hot-rolled, cold-drawn and hot-finished seamless tubes in stainless, high-alloy, carbon and low-emission grades (up to 13% Cr), spanning dimensions from 6 mm to 711 mm OD with wall thicknesses up to 125 mm, and offers downstream pressure parts for boiler and refinery applications. Its flagship sustainability product, O-Next, is a Tecnalia-certified Net Zero emissions seamless tube line (0.0 t CO2e/t scope 1-2, 0.4 t CO2e/t scope 1-3) made from recycled raw material with fossil-free energy.

The company serves downstream (refineries, petrochemical, LNG, power generation including biomass, HRSG, combined cycle and nuclear), midstream (natural gas, hydrogen and CCUS pipelines) and upstream (OCTG, drill pipe, geothermal) end markets, plus mechanical and industrial customers. It holds nuclear-relevant certifications (ISO 19443:2018, ASME NCA 3300) alongside API, ISO 9001/14001/14040/14025, TÜV AD 2000 / PED and other sector approvals. Tubos Reunidos S.A. has been listed on the Madrid and Bilbao continuous markets since 2005 (ticker TR), received €112.8 million in FASEE government support in 2021, and operates an international sales footprint with offices in Dubai, Milan, Beijing, Dusseldorf and Houston.

The business model is enterprise B2B: revenue is generated through direct sales of custom-priced, project-specific seamless steel tubes under multi-year contracts to industrial customers in oil & gas, power, chemicals and mechanical sectors, supported by a specialized commercial team and a 2025 distribution partnership with thyssenkrupp Schulte. The group has 1,279 employees as of 2025 and 300,000 tons of annual seamless steel pipe capacity. In May 2026 the parent and subsidiaries filed for voluntary insolvency with the Commercial Court of Vitoria-Gasteiz, and PKF ATTEST CONCURSAL was appointed administrator, with a sale process for the assets subsequently ordered.

Name

Tubos Reunidos Group

Legal name

TUBOS REUNIDOS GROUP S.A.

Website

https://tubosreunidosgroup.com

Company type

Public

Founded year

1890

Operating status

Operating

Short description

Tubos Reunidos Group is a Spanish seamless steel tube manufacturer (founded 1890) producing stainless, alloy and carbon grades, plus its O-Next Net Zero line, for oil & gas, power generation, chemical and mechanical customers globally; listed in Madrid since 2005, currently in insolvency proceedings.

Ownership category

akta.pro rank

Product category

Seamless Steel Tubes and Pipes

NAICS

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (33121), Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (331210), Fabricated Pipe and Pipe Fitting Manufacturing (332996), Power Boiler and Heat Exchanger Manufacturing (332410)

SIC

Steel Pipe & Tubes (3317), Fabricated Plate Work (Boiler Shops) (3443), Construction, Mining & Materials Handling Machinery & Equip (3530)

akta.pro primary industry

Pipe & Tube Manufacturing (Seamless & Welded OCTG/Line Pipe/Structural Tube) (IMAKABAI)

akta.pro secondary industries

Pipes & Tubing (Metal, Plastic & Composite) (IMADALAC), Hoses, Tubing & Fittings (Hydraulic/Pneumatic Lines & Connectors) (IMAHAGAH), Pipe Accessories & Joining Systems (Couplings, Gaskets, Solvent Cement, Fusion Fittings) (IMANADAJ)

Keywords

• Seamless steel tubes
• Carbon steel pipes
• Stainless steel tubes
• Oil country tubular goods
• Industrial pipe manufacturing

Headquarters

HQ city

Amurrio

HQ country

Spain

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Seamless Steel Tube and Pipe Sales: Tubos Reunidos Group generates revenue through the manufacture and sale of seamless steel tubes and pipes in stainless steel, high-alloy, and carbon grades. Products are sold to industrial customers in oil & gas, power generation, chemical, petrochemical, and mechanical sectors worldwide.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Tubos Reunidos Group manufactures seamless steel tubes and pipes in stainless steel, high-alloy, and carbon grades through hot-rolled, cold-drawn, and hot-finishing processes at facilities in Amurrio and Valle de Trápaga (Spain) and Beasley, Texas (USA). Its portfolio covers standard seamless tubes from 6mm to 711mm OD with wall thicknesses up to 125mm, the O-Next™ Net Zero emissions product line, premium threaded casing and drill pipe (BTX by RDT), and downstream pressure equipment such as boiler panels and refinery furnace coils, serving oil & gas, power generation, chemical, petrochemical, and mechanical industries worldwide.

Product overview

Tubos Reunidos Group is a manufacturer of seamless steel tubes and pipes operating two production facilities in Spain (Tubos Mill and Productos Mill) and one in the USA (RDT-USA). The product portfolio centers on seamless steel tubes in stainless steel, high-alloy, and carbon grades. The core product range includes standard seamless tubes and pipes (hot-rolled, cold-drawn, and hot finished), supplemented by the O-Next™ sustainable product line for net-zero emissions applications, and specialized Downstream Pressure Parts for boiler and power generation equipment. The company also produces premium threaded products and the BTX upset casing line through its RDT-USA subsidiary. Products serve multiple markets including downstream (refining, petrochemical, power generation), midstream (pipelines, hydrogen, CCUS), upstream (oil and gas, geothermal), and mechanical/industrial applications. The group operates with a full steel-integrated production process and has achieved annual production capacity of 300,000 tons of seamless steel pipes.

Differentiator

Problem solved

Functional benefit

Brands

• O-Next™: Net Zero carbon emissions seamless steel tubes and pipes manufactured from recycled raw material using fossil-free energy. Product range achieving 0.0 t CO2e emissions per tonne of steel in scope 1-2 operations.

Products and services

• O-Next™ Net Zero Emissions Steel Tubes Net Zero carbon emissions seamless steel tubes and pipes manufactured from recycled raw material using fossil-free energy, designed for industrial customers seeking to reduce scope 3 emissions in oil & gas, energy, and construction projects.
• Seamless Steel Tubes and Pipes Hot-rolled and cold-drawn seamless carbon and alloy steel tubes up to 13% Cr, plus stainless steel and high-alloy grades in sizes from 6mm to 711mm OD with wall thicknesses up to 125mm, for oil & gas, chemical, petrochemical, power generation, heat transfer, automotive, mechanical, and construction industries.
• BTX Premium Upset Casing Proprietary upset casing from RDT with integral connection tubular design using standard API threads, designed to drill, ream, and rotate with elevator shoulders, torque shoulder connection (BTU Conn), and a 50% reduction in leakage failure compared to conventional casing. Sold to oil & gas exploration and production customers.
• Premium Threaded Pipes (Upset Casing, Drill Pipes, and Specialty Connections) High-quality threaded pipe solutions including upset casing, drill pipes, and specialty connections for the oil and gas industry, produced in-house through dedicated threading operations.
• Downstream Pressure Parts Pressure equipment including boiler water walls, membrane panels, coil heaters, superheaters, economizers, radiant and convective coils for refinery furnaces, complete boiler modules, drums, headers, and pressurized elements for industrial and power generation boilers, with transformation processes such as bending and welding.

Quantifiable outcome

• 0.0 t CO2e emissions per tonne of steel (scope 1-2) with O-Next range vs 0.8 t CO2e for standard pipes
• +3 more outcomes

Named customers6 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• thyssenkrupp SchultecoreChannel Partner/ Reseller/ Distributor · 23 September 2025Strategic distribution partnership announced in September 2025, combining Tubos Reunidos Group's manufacturing capabilities with thyssenkrupp Schulte's distribution network to deliver sustainable steel products. The partnership aligns with both companies' values and ambitions for climate action.

Scale indicators13 records

Recent moves10 records

Expansion highlights5 records

Broad incumbents

• ArcelorMittal: World's largest steelmaker with European tube and pipe operations overlapping Tubos Reunidos' markets, especially through downstream service centers and energy applications.
• Tata Steel: India-headquartered integrated steelmaker with seamless tube production and European operations; competing incumbent across industrial, energy and mechanical seamless pipe segments.
• JFE Steel Corporation: Major Japanese steel producer with seamless pipe offerings for energy and industrial use; competes with Tubos Reunidos in line pipe, OCTG and boiler tubes as part of a wider steel portfolio.
• Nippon Steel Corporation: Large Japanese integrated steelmaker with seamless pipe/tube capabilities serving O&G, power and industrial markets; broader portfolio than Tubos Reunidos but directly competes in seamless line pipe and OCTG.

Direct peers

• Benteler International: Austrian-based manufacturer of seamless and welded steel tubes for automotive, mechanical and energy applications, overlapping with Tubos Reunidos' mechanical/industrial and downstream pressure parts segments.
• Tenaris: Italian-Argentine seamless steel tube and OCTG manufacturer with global mills and service centers; closest large-scale direct competitor across OCTG, line pipe and industrial seamless segments served by Tubos Reunidos.
• Schoeller-Bleckmann Oilfield Equipment (SBO): Austrian specialist in high-precision non-magnetic drill string components and downhole tools for oil & gas; comparable to RDT's premium upset casing and drill pipe business.
• Vallourec: French-headquartered global leader in seamless steel tubes for OCTG, line pipe and industrial applications, with European mills comparable to Tubos Reunidos' integrated capacity and customer overlap in oil & gas and power.
• Salzgitter AG / Mannesmann Line Pipe: European steel and tube group whose Mannesmann unit produces seamless and welded line pipe; competes head-on with Tubos Reunidos in European energy and industrial seamless markets.

Emerging players

• Sandvik Materials Technology: Swedish manufacturer of advanced stainless and high-alloy seamless tubes for demanding energy, chemical and hydrogen applications; competes in the specialty/energy-transition end of Tubos Reunidos' portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/grupotubosreunidos
• LinkedInlinkedin.com/company/tubos-reunidos-group

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries9 records

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 Tubos Reunidos Group