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DEPRETTO
DEPRETTO
About Depretto
De Pretto Industrie’s journey starts in 1885 when its founder, Silvio De Pretto, began producing hydraulic turbines in his factory, initially specialized in loom reparation. During our long history we have always played a primary role in the energy sector, enhancing our offer with turbomachinery and turbocompressors. Since 1936 we have realized 160 steam turbines, for national and international markets. Furthermore, in this time we have collaborated with over 20 research institutes in the development of special components. Many factors have contributed to our success, but we would like to highlight some of them: respect for tradition, sense of belonging to our territory, innovation and teamwork, all values in which we have always believed in. Today, as we did in the past, we share a positive vision of the future and the commitment to understanding and facing socioeconomic changes, guaranteeing a high level of standards and skills.
Steam Turbines
Our Steam Turbines are engineered for high performance and reliability, covering a
broad range of industrial and power generation applications.
Technical Capabilities:
• Power range: up to 50 MW
• Temperature range: up to 540°C
• Pressure range: 2.5 – 130 bara
• Suitable for saturated steam
Design Options:
• Condensing / backpressure configurations
• Multiple extraction / admission
• Modular design
• Impulse or reaction turbine
• Power generation or mechanical drive applications
• Packaged units (gear, LOS, auxiliaries, etc.)
Oil & Gas Offshore and Subsea
We provide critical mechanical equipment solutions for subsea fields and offshore
vessels, delivering robust, reliable, and high-performance systems tailored for
the most demanding marine environments.
Offshore Vessel & Mission Equipment Solutions:
• Mission equipment (A/R equipment, winches, mooring systems, EPRS)
• Renewables: Offshore wind installation equipment
• Pipe lay vessel and handling systems equipment (J-lay, stingers, reel-lay, carousel)
Offshore Swivel Equipment Solutions:
• Offshore swivels
• Subsea swivels
• Repair services and brownfield upgrades
Bespoke Installation Tools
Swivel Pull-In Heads designed for subsea riser line operations, engineered
for extreme durability, precision, and reliability in harsh offshore environments.
Capabilities & Features:
• Design, fabrication, and testing
• Full-forged configuration
• Load capacity up to 600 tons
• Dimensions: 2.5 m x 2.5 m
• Weight: 10 tons
• Engineered for rotation capability under heavy loads
Successfully deployed in the LIZA subsea field, Guyana.
Dead-End Powered Swivel
Dead-End Powered Swivel engineered for the Deep Blue 2-fall hoisting system,
designed to handle complex offshore operational demands with precision and reliability.
Project Scope & Highlights:
• Fully developed as per customer functional specifications
• Challenging design engineered and successfully executed
• Procurement and integration of critical components including forgings, bearings, and gears
• Complete tested solution including load test and FAT
• Fast-track delivery: contract awarded in July 2019, delivered by November 2019
Lowering Link
Lowering Link engineered for the Deep Blue 2-fall hoisting system,
designed to meet demanding offshore operational requirements with reliability,
strength, and precision.
Project Scope & Development:
• Customer functional specification with open design solutions
• Phase 1: New solution analysis
• Phase 2: Detailed design development
• Optimization of interfaces for improved usability
• Main body forged in-house for superior structural integrity
EPRS System: OIE Carrier
Renewables: Offshore Wind
Motion Compensated Pile Grippers designed as advanced installation
tools supporting Offshore Wind Farm construction. Engineered for precision and
stability in dynamic offshore conditions.
Main Features:
• 6 meters compensation on longitudinal and transversal directions
• Adjustable diameter ranges:
— Upper: 7–12 meters
— Lower: 6.5–8 meters
• Capable of movements on the deck plane
• Fully retractable design
• Storage flexibility: vertical or horizontal
Renewables: Offshore Wind
Pile Grippers designed as precision installation tools for Offshore
Wind Farms, engineered to ensure stability, accuracy, and safe handling during
monopile installation operations.
Main Features:
• Handling capability for piles up to 9 meters
• Diameter adjustable to suit various pile sizes
• Movement capability on the deck plane
• Fully retractable design for operational flexibility
• Customized design tailored to project requirements
Pipelay Vessel Towers
J-Lay Stinger
Engineering, construction, and testing of the JLT Stinger – Flute System for the
S7000 Vessel. Designed to support heavy-duty pipelaying operations with
precision, reliability, and robust structural integrity.
Scope Includes:
• Complete design and engineering
• Fabrication and assembly
• Full testing and validation
• Integration with S7000 vessel systems
Cable Lay Equipment
Subsea Umbilical Deflector engineered for the Constellation Vessel,
designed to manage and guide subsea umbilicals with precision and durability in
challenging offshore environments.
Main Features:
• Design, fabrication, and testing
• Conical configuration
• Bending radius: 20°
• Cable load capacity up to 20 tons
• Dimensions: 2 m x 2 m
• Equipped with low-friction pads for smooth operation
Pipe Lay Equipment
A&R Cable Sheaves Modification engineered to enhance pipe lay operations
with increased reliability, load capacity, and operational flexibility.
Main Features:
• Complete design, fabrication, and testing
• Load capacity: 600 tons
• Hydraulic operating system designed to compensate JLT angle variations
• New optimized cable routing on deck for improved efficiency
Spread Mooring – Riser’s Connection
Gap Compensators designed to ensure reliable riser connection
performance in spread mooring systems, even under dynamic offshore conditions.
Main Features:
• Complete design, fabrication, and testing
• Mechanical system engineered to recover structural gaps
• Design life: 30 years
• Load capacity up to 100 tons
• Fast-track delivery for critical offshore projects
Pipeline Trenching
Backfilling Arm specifically engineered for offshore pipeline trenching
operations, ensuring durability, precision, and efficient backfilling performance.
Main Features:
• Complete design, fabrication, and testing
• Hydraulic actuated system for controlled movement
• Length: 30 meters, Weight: 90 tons
• Equipped with a rotating baseframe for enhanced operational flexibility
• Fast-track delivery for time-critical offshore projects
Swivels for Single Point Mooring (SPM)
Single Point Mooring (SPM), including systems such as SALM and
CALM, is a critical offshore loading solution used to transfer crude oil
and refined products between offshore fields or refineries and shuttle tankers.
These systems enable safe, efficient, and continuous product transfer in open sea
environments.
De Pretto Industrie supplies fully customized Swivels for SPM systems, tailored
to meet client-specific requirements, including:
• Dimensions and size
• Pressure ratings
• Flanged connections
• Materials selection
In addition to manufacturing new units, De Pretto also offers complete
refurbishment services for existing Swivels—whether originally produced by
De Pretto or by other manufacturers.
Swivel New Built or Refurbishment
De Pretto Industrie provides both new built customized Swivels and complete
refurbishment services for existing Swivels. These solutions apply to offshore
and subsea applications, as well as Marine Loading Arm systems.
Whether the Swivel originates from De Pretto Industrie or from another brand, we
deliver fully engineered solutions tailored to the customer’s specific requirements,
ensuring long life, high performance, and operational reliability.
Subsea Swivel Connector EASY-LOCK
The EASY-LOCK Subsea Swivel Connector is designed for exceptional performance
and operational reliability in demanding subsea environments.
Unique Performance Features:
• Pre-loaded design
• Fail-safe operation
• Self-energized and pressure-energized
• Easy maintenance
• Full 360-degree rotation
STEAM TURBINES
DEIF offers a complete control package for steam turbine plant applications.
We deliver advanced **power management systems** and **turbine governor solutions**
that ensure optimum control, stability, and protection for steam turbine operations.
Our robust hardware platforms guarantee long-term reliable performance, while our
user-friendly software solutions provide maximum configuration flexibility.
In addition to precise **speed control** and **overspeed protection**, our system
supports selectable actuator output, programmable I/O, and configuration through
a Windows-based service tool.
DEIF power management solutions also enable synchronisation, load sharing, and
seamless communication with other systems using multiple protocols.
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Combined cycle systems
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Biomass and waste-to-energy systems
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Concentrated solar power systems
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Heat recovery from industrial processes
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Combined heat and power systems
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Drivers for compressors, pumps, blowers & fans
STEAM TURBINES MAINTENANCE & SERVICES
DEIF provides a complete control and maintenance service package for steam turbine
plant applications. Our advanced power management systems and turbine governor
solutions ensure optimal turbine performance, operational safety, and long-term
reliability.
We supply robust hardware platforms designed for harsh industrial environments,
along with user-friendly software tools that allow flexible configuration tailored
to your specific plant requirements.
In addition to precise speed control and overspeed protection, our
governor systems offer programmable I/O, selectable actuator output, and easy setup
through a Windows-based service tool.
DEIF power management solutions enable synchronisation, load sharing, and
seamless communication with other controllers and plant systems through a wide
range of industrial communication protocols.
STEAM TURBINES MAINTENANCE & SERVICES
DEIF offers a complete control package for steam turbine plant applications.
We deliver advanced power management systems and turbine governor solutions
designed to ensure optimal control, efficiency, and protection of steam turbines.
Our highly robust hardware platforms provide long-term, reliable operation,
while our user-friendly software tools offer the flexibility to configure
a control system that matches your application requirements.
In addition to precise speed control and overspeed protection,
our governor solutions include features such as programmable I/O, selectable
actuator output, and easy configuration using a Windows-based service tool.
DEIF's power management systems enable synchronisation,
load sharing, and communication with external controllers
and systems via a wide range of industry-standard communication protocols.
Turbomachinery Spare & Service
Engineering and manufacturing of stator parts and turbomachinery casings form a core
part of our expertise. Our scope of work includes project management, assembly,
and complete packaging of turbocompressors and steam turbines.
Services are primarily delivered to customers across Italy, where we maintain
strong service-level agreements and long-term maintenance partnerships in the
energy, steel manufacturing, and paper industries.
Our Special Projects division manufactures high-precision components for sectors
including power generation, offshore facilities, mechanical systems, and research
applications—supported by an extensive reference list.
We continue to leverage our advanced welding and precision machining capabilities
developed from decades of experience producing components for hydraulic turbines,
gearboxes, wind energy systems, telescopes, vacuum vessels, and more.
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Compressors and Steam Turbines
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Packaging
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Service Turbomachinery
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Finished Components
Compressor Overhauling
Our compressor overhauling services include installation and maintenance across
various industrial applications and operational environments. We deliver complete
package solutions with integrated control systems designed to manage the entire
machine train efficiently.
Whether you require substitution or renovation of existing compressor packages,
we provide engineered solutions using reliable, industry-standard software tools
available on the market. Our approach ensures performance improvement, extended
equipment life, and operational reliability.
Reverse Engineering
De Pretto Industrie leverages more than a century of experience in maintaining
complex machinery within the energy sector. Combined with the extensive offshore
and subsea know-how of our Special Projects unit, we serve as a highly reliable and
responsive partner for servicing existing offshore and subsea equipment.
Our strong design expertise, advanced reverse engineering capabilities, offshore
assistance, and fully equipped in-house workshop enable us to repair, maintain,
overhaul, or upgrade equipment from any brand.
Extending the operational life of existing assets or expanding their working
conditions can significantly enhance the competitiveness of EPC contractors and
oil companies. With this in mind, De Pretto Industrie assists clients by providing
repair, maintenance, overhaul, and spare parts services for:
• Mission equipment for vessels
• Deck equipment for vessels
• Fluid swivels and connectors
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Vessel Mission Equipment
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Swivel