Oil & Gas and Nuclear

High-Performance Rolling for Energy Infrastructure

Q: How does Davi ensure compliance with strict international nuclear and pressure vessel standards like ASME and RCC-M?

Fabricating critical energy components demands absolute risk mitigation and precise mechanical control. Heavy-wall shells for reactor pressure vessels (RPVs) and primary containment structures must maintain extreme material grain integrity and strict roundness tolerances to prevent structural failures. Davi MAV 3-roll variable axis and MCB 4-roll machines are engineered specifically to comply with ASME and RCC-M codes. By utilizing our patented Servo-Tronic system, the machine maintains perfect roll parallelism through dual independent hydraulic and mechanical controls, ensuring highly accurate force distribution. This mechanical and hydraulic symmetry prevents frame distortion under massive loads, delivering the exact dimensional tolerances and operational continuity required for certified nuclear-grade safety.

Q: What plate rolling technology is recommended for manufacturing extra-thick offshore structures?

For massive tubular components like jackets, monopiles, and tripods used in offshore platforms, the ideal solution is the Davi MAV 3-roll variable axis series. These heavy-duty machines are engineered to roll high-yield strength plates with thicknesses ranging from 50 mm (2 in) to 250 mm (9 7/8 in) with extreme precision. The MAV series allows for individual horizontal movement of the side rolls and vertical movement of the top roll, acting with the high-pressure capacity of a press-brake but offering far greater geometric flexibility. Equipped with three motorized rolls as a standard, the system guarantees optimal torque transmission without the risk of plate slippage, allowing operators to pinch at the precise tangent point to achieve the shortest possible flat end.

Q: How does Davi address the specialized rolling requirements for Small Modular Reactors (SMRs) and Advanced Modular Reactors (AMRs)?

Next-generation nuclear applications like Small Modular Reactors (SMRs) and Advanced Modular Reactors (AMRs) require forming ultra-thick materials and high-yield strength steels into highly compact, dense containment shells. To handle these demanding parameters, Davi provides heavy-duty configurations of our MAV variable-axis series, designed to deliver maximum power and mechanical stiffness. For applications exceeding a 3,000-ton pressing capacity, we utilize a unique "pull-pull" cylinder configuration that pulls the top roll from below to compress the frame, drastically reducing structural deflection. This robust engineering ensures that dense, heavy-wall shells maintain perfect roundness and material grain integrity while fully satisfying the most stringent global nuclear safety regulations.

Q: What solutions does Davi offer for the high-precision bending of heat exchangers and refinery spiral piping?

For heat exchangers and cooling systems that require complex, tight-radius piping and spiral bends, Davi MCP angle rolls provide a highly precise and automated solution. These heavy-duty section benders handle pipes up to 800 mm (31 1/2 in) in diameter and are equipped with advanced tilting systems, dedicated guide tools, and CNC-controlled pitch regulation. Featuring three independent hydraulic motors that drive each roll as standard, our machines transmit optimal torque directly to the profile, eliminating the risk of material slippage or deformation. Controlled by our state-of-the-art iRoll CNC system, this technology allows operators to manage variable pitches and complex three-dimensional geometries with automated repeatability, ensuring seamless integration into high-specification energy supply chains.

The Energy industry demands the highest levels of safety, precision, and structural integrity, especially when dealing with the rigorous requirements of the Oil & Gas and Nuclear sectors. Davi provides a range of plate and angle rolls designed to manufacture critical components, from massive offshore structures and nuclear containment vessels to high-precision boilers and heat exchangers. Our technology is engineered to meet the strictest international standards, including ASME and RCC-M, ensuring long-term reliability in the most demanding environments.

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why davi

durability

compliance

service

Why Partners Choose Davi

With more than 10,000 machines installed worldwide, Davi is the trusted partner for global energy leaders. We provide a production advantage through:

Durability

Forged, heat-treated Chromium-Molybdenum steel rolls for a lifetime of heavy-duty use.

Compliance

Engineering that supports manufacturing according to international pressure vessel and nuclear codes.

Service

We ensure your operations remain productive with a dedicated 24/5 technical support option and spare parts delivery.

for the Global Energy Sector

Comprehensive Solutions

Our versatility allows Davi to support every segment of the Oil & Gas and Nuclear supply chain.

Offshore Platforms & Foundations

We provide 3-roll variable axis machines (MAV series) for thick tubular structures such as jackets, monopiles, and tripods. These machines handle thicknesses from 50 mm (2 in) to 250 mm (9 7/8 in) with extreme precision.