DEPRETTO

Steam Turbines

Engineered for high performance and reliability across industrial and power generation applications.

• Power range: up to 50 MW
• Temperature range: up to 540°C
• Pressure range: 2.5 – 130 bara
• Suitable for saturated steam
• 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

Mechanical equipment for subsea fields and offshore vessels, built to be robust and reliable in harsh marine conditions.

• 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 swivels
• Subsea swivels
• Repair services and brownfield upgrades

Bespoke Installation Tools

Swivel pull-in heads for subsea riser line operations, forged for durability and precision in offshore conditions. Deployed in the LIZA subsea field, Guyana.

• 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

Dead-End Powered Swivel

Built for the Deep Blue 2-fall hoisting system to meet complex offshore demands, developed to customer functional specifications and delivered on a fast track.

• 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

Developed for the Deep Blue 2-fall hoisting system, with open design solutions based on the customer's functional specification.

• 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)

Installation tools for offshore wind farm construction that provide precision and stability in dynamic conditions.

• 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)

Precision installation tools for offshore wind farms that support stable, accurate, and safe monopile handling.

• 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

Design, construction, and testing of the JLT Stinger Flute System for the S7000 vessel, built for heavy-duty pipelaying.

• Complete design and engineering
• Fabrication and assembly
• Full testing and validation
• Integration with S7000 vessel systems

Cable Lay Equipment

Subsea umbilical deflector for the Constellation vessel that guides and manages umbilicals in challenging offshore conditions.

• 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

Modifications to A&R cable sheaves that improve reliability, load capacity, and operational flexibility in pipe lay work.

• 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 that keep riser connections reliable in spread mooring systems under dynamic offshore conditions.

• 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

A hydraulically actuated backfilling arm for offshore pipeline trenching, built for durability and efficient backfilling.

• 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)

Custom swivels for SPM systems such as SALM and CALM, which transfer crude oil and refined products between offshore fields or refineries and shuttle tankers. Customization covers size, pressure rating, flanges, and materials. Refurbishment is available for swivels from any manufacturer.

• Dimensions and size
• Pressure ratings
• Flanged connections
• Materials selection

Swivel New Built or Refurbishment

New custom swivels and refurbishment of existing swivels for offshore, subsea, and marine loading arm applications, regardless of original manufacturer.

Subsea Swivel Connector EASY-LOCK

A subsea swivel connector built for high performance and reliability in demanding subsea environments.

• Pre-loaded design
• Fail-safe operation
• Self-energized and pressure-energized
• Easy maintenance
• Full 360-degree rotation

STEAM TURBINES (DEIF Control Systems)

DEIF supplies control packages for steam turbine plants, including power management systems and turbine governors for control, stability, and protection, with speed control and overspeed protection.

• 01 Combined cycle systems
• 02 Biomass and waste-to-energy systems
• 03 Concentrated solar power systems
• 04 Heat recovery from industrial processes
• 05 Combined heat and power systems
• 06 Drivers for compressors, pumps, blowers & fans

STEAM TURBINES MAINTENANCE & SERVICES

DEIF provides control and maintenance packages for steam turbine plants, with robust hardware, configurable software, speed and overspeed control, and synchronisation and load sharing.

STEAM TURBINES MAINTENANCE & SERVICES

DEIF offers steam turbine control packages with power management and governor solutions focused on control, efficiency, and protection, supporting external controller communication.

Turbomachinery Spare & Service

Core expertise in stator parts and turbomachinery casings, plus project management, assembly, and packaging of turbocompressors and steam turbines, mainly serving Italian energy, steel, and paper customers under service agreements.

• 01 Compressors and Steam Turbines
• 02 Packaging
• 03 Service Turbomachinery
• 04 Finished Components

Compressor Overhauling

Compressor installation and maintenance across industrial settings, with complete package solutions, integrated controls for the machine train, and substitution or renovation of compressor packages.

Reverse Engineering

Using over a century of energy sector experience and offshore know-how, the company repairs, maintains, overhauls, and upgrades equipment from any brand, and supplies spare parts to extend asset life.

• Mission equipment for vessels
• Deck equipment for vessels
• Fluid swivels and connectors
• 01 Vessel Mission Equipment
• 02 Swivel