Doosan Makes Components for U.S. Reactor Supply Chain
Precision metal and component manufacturers can see new sourcing roles as advanced reactor programs move into production.
Updated on Nov. 6, 2026 in Manufacturing
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Doosan Enerbility has begun manufacturing key components for the first commercial small modular reactor (SMR) developed by X-energy Inc., as the South Korean manufacturer expands its U.S. operations. The work covers steam generator tubes for X-energy's Xe-100 SMR, in cooperation with Alleima AB, which will supply the high-temperature alloy tubes.
Why it matters
The arrangement gives Doosan a production role in the U.S. nuclear supply chain, where high-temperature components are specialized and capacity is limited. For manufacturers and suppliers, it signals how advanced reactor projects are sourcing precision parts across borders.
The Xe-100 steam generator is designed to produce steam at temperatures of up to 565 degrees Celsius. The source does not report contract value, order volume, or the number of U.S. jobs created by the expansion.
The players
Doosan Enerbility
A South Korean heavy-equipment and power-generation manufacturer that supplies reactor and turbine components to global nuclear and energy projects.
X-energy Inc.
A U.S. advanced reactor developer building the Xe-100 small modular reactor, a high-temperature gas-cooled design aimed at commercial power customers.
Alleima AB
A Swedish specialty steel and high-performance alloy manufacturer that supplies tubing for demanding industrial and energy applications.
The details
Alleima will manufacture and supply high-temperature alloy tubes, which Doosan Enerbility will then process into helical coils using its proprietary technology. The helical coils form a key part of the Xe-100 steam generator. Splitting the work this way means each firm contributes its specialty, with the tube material and the coil forming handled by different companies.
Timeline
Thursday: Doosan Enerbility began manufacturing components for X-energy's SMR and expanding its U.S. operations.
Market Landscape
The arrangement places a South Korean manufacturer inside a U.S. advanced reactor program, reflecting how SMR developers are building multinational supply chains for specialized components. It follows the pattern of targeted partnerships in which one firm supplies the alloy material and another performs the precision forming.
Manufacturers that supply specialty alloys or precision-formed components should watch for sourcing opportunities as advanced reactor projects expand. Procurement teams in the energy sector should note that qualified high-temperature tube and coil suppliers are a narrow pool.
The takeaway
Advanced reactor supply chains are becoming multinational, with specialized roles divided among a few qualified manufacturers. Operators in precision metals should track how X-energy and similar developers qualify new suppliers as construction moves toward commercial deployment.
Further reading
For more on how components like these are produced, see Manufacturing.
Source note: This article includes information reported by Pulse.
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