Gas Turbine Parts Manufacturing

‍Greno Industries manufactures gas turbine parts for top OEMs like GE Vernova and Siemens Energy.  We also support field service providers throughout the power generation industry when they need precision gas turbine components for scheduled and emergency outages. ‍ ‍

Gas Turbine Parts and the Greno Advantage

Today’s gas turbines operate under extreme temperatures, higher rotational speeds, and significant thermal cycling. The components inside these systems must meet strict dimensional tolerances, material specifications, and reliability standards.‍‍ ‍

Greno’s machining capabilities—including large-diameter turning, 3-axis and 4-axis CNC milling, gun drilling, welding, and advanced inspection—allow us to manufacture complex turbine components with exceptional accuracy and repeatability.‍‍ ‍

With our extensive experience machining high-temperature alloys and precision components, Greno supports both new turbine builds and turbine service work. Whether you need a regular gas turbine parts manufacturer or periodic support for service work, contact us.‍ ‍

Precision Manufacturing for Gas Turbine Components

‍Gas turbine components often require tight tolerances, high-strength materials, and specialized manufacturing. Many parts are produced from difficult-to-machine alloys such as Inconel, stainless steels, and alloy steels that must perform reliably in high-temperature environments.‍ ‍

Greno’s machining processes support:

• Large-diameter turning for turbine rings, flanges, and cylindrical components‍‍‍ ‍

• 3-axis and 4-axis milling for precision features and complex geometries

• ‍‍Gun drilling for deep cooling passages and internal channels‍ ‍ ‍

• Welding and fabrication for small to medium structural turbine assemblies‍

• Precision inspection and quality verification

‍These integrated capabilities allow Greno to manufacture both standalone components and complex assemblies used in industrial gas turbine systems.‍‍ ‍

Materials Used in Gas Turbine Components

‍Gas turbine parts must withstand extreme heat, oxidation, and mechanical stress.

Greno regularly machines materials such as:‍ ‍

• Inconel 718 and other nickel-based superalloys

• 17-4 PH stainless steel

• High-strength alloy steels

• Stainless steels (300 and 400 series)

• Heat-resistant specialty alloys

‍These materials provide the thermal stability and mechanical strength required for high-performance turbine environments.

‍Manufacturing for OEM and Turbine Service Work

‍Greno supports both original equipment manufacturers and field service providers. Our machining flexibility allows us to produce:‍ ‍

• Prototype components

• Replacement turbine parts

• Short-run production batches

• Emergency repair components for outages

‍Because turbine outages often require fast turnaround times, our in-house machining and welding capabilities help reduce lead times and ensure reliable delivery schedules.

‍Gas Turbine Parts from Greno

‍ Greno manufactures these gas turbine parts.

‍12-Point Bolts

12‑point bolts have a double‑hex head design that provides superior torque transmission and uniform clamping, which are essential for maintaining joint integrity in casings, combustor assemblies, and high‑temperature flange connections. 

12-Point Nuts

12-point nuts have a double-hex geometry that provides more wrench engagement than standard hex nuts. This enables higher torque without rounding and ensures uniform preload on gas turbine casings, combustor assemblies, and high-temperature flange joints. 

Aft Diffusers

Aft diffusers slow and stabilize the turbine’s high-velocity exhaust stream. These gas turbine parts reduce back pressure, enhance mass-flow uniformity, and support the optimal performance of exhaust ducts, heat-recovery systems, or augmentors. 

Aft Plugs

Aft plugs streamline and stabilize the exiting gas path by sealing non-flow areas, preventing recirculation, and supporting pressure distribution within the aft diffuser. They maintain aerodynamic continuity, protect internal hardware, and ensure efficient exhaust flow.  

Air Deflectors

Air deflectors redirect, stabilize, or shield airflow within turbine assemblies. They help protect bearings, seals, wiring, and structural hardware from thermal distress. Their geometry guides secondary air where it’s needed.

Bearing Seals

Bearing seals are gas turbine parts that prevent oil leakage, control airflow, and protect rotating assemblies under extreme temperature, pressure, and vibration. They maintain lubrication integrity while blocking hot‑gas ingestion that can damage bearings and shorten service life.  

Bolts

Gas turbine bolts are used in turbine casings, combustor assemblies, exhaust frames, and high‑temperature flange connections. They enable reliable clamping during thermal cycling, supporting long‑term gas turbine performance and structural stability.

Caps

Caps are used to close, shield, or isolate openings within the gas turbine’s combustor, casing, or exhaust assemblies. Caps prevent hot‑gas leakage, maintain pressure balance, and protect internal hardware from thermal distress and contamination.

Coupling Guards

Coupling guards shield rotating components in turbine drive trains. They maintain a controlled environment around high-speed shaft connections and reduce the risk of entanglement, impact, or foreign object damage.

Covers

Gas turbine covers are protective components that shield critical assemblies from heat, debris, and environmental exposure during operation, maintenance, or storage. Their precise fit ensures proper sealing and can help extend the life of high-value hardware.

Crossfire Tube Retainers

Crossfire tube retainers are high‑temperature hardware components that secure and stabilize crossfire tubes within a combustor. These gas turbine parts ensure proper alignment of the tubes that transfer ignition energy between combustor cans.

Crossfire Tubes

Crossfire tubes are high‑temperature conduits that transfer ignition energy between adjacent combustor cans in a gas turbine. During startup, they allow flame propagation from the ignited can to the remaining cans, ensuring rapid, uniform light‑off across the entire combustor. 

Cylinders

Gas turbine cylinders are heavy‑duty structural housings that support and align major turbine sections, including the compressor, combustor, and turbine modules. They maintain precise concentricity under extreme temperature, pressure, and vibration.

Dowels

Dowels are precision alignment pins used to accurately locate and secure major turbine components such as casings, diaphragms, bearing housings, and combustor sections. They support efficient airflow, stable rotor dynamics, and long‑term structural integrity.

Flanges

Gas turbine flanges are high‑strength, precision‑machined connection interfaces used to join major turbine sections such as casings, combustor modules, exhaust frames, and piping assemblies. 

Fuel Nozzle Parts

Fuel nozzle parts include the injectors, swirlers, tips, liners, stems, and metering components that deliver and atomize fuel into the combustor. These gas turbine parts control spray pattern, fuel‑air mixing, and ignition stability under extreme temperature and pressure.

Gaskets

Metal gaskets for gas turbines are high‑temperature sealing components that maintain leak‑tight joints across combustor interfaces, exhaust sections, fuel manifolds, and high‑pressure casing splits. Types include spiral-wound, corrugated, C-ring, and E-ring gaskets.

Hex Nuts

Hex nuts are used to secure bolted joints across gas turbine casings, combustor assemblies, exhaust frames, and high‑temperature flange connections. Their six‑sided geometry provides reliable wrench engagement, consistent torque, and long‑term joint stability.

High Alloy Bolts

High alloy bolts are precision fasteners that are manufactured from advanced alloys such as Inconel, Hastelloy, A286, and MP159. They retain strength, creep resistance, and preload stability above 1000°F.

High Alloy Studs

High‑alloy studs provide long‑term joint integrity for casings, flanges, combustor assemblies, and other gas turbine interfaces. Their controlled metallurgy, precision threads, and corrosion‑resistant coatings ensure reliable clamping.

IGV Gears

IGV gears are precision‑machined drive components that synchronize the movement of Inlet Guide Vanes (IGVs) in a turbine’s compressor section. They translate actuator motion into coordinated vane rotation, ensuring accurate airflow modulation.

IGV Rings

IGV rings are precision‑machined structural components that support and synchronize IGV rotation in a compressor. These gas turbine parts allow vanes to adjust uniformly and help control airflow angle, compressor loading, and surge margin during startup and operation. 

Keys

Gas turbine keys are precision‑machined locking elements that transmit torque and maintain rotational alignment between shafts, couplings, gears, and other rotating components. Their tight tolerances ensure secure engagement within keyways and prevent slippage.

Lifting Devices

Lfting devices are handling tools designed to safely lift, position, and install heavy turbine components such as casings, rotors, diaphragms, combustor modules, and exhaust sections. They’re used during turbine disassembly, alignment accuracy, and service or repairs. 

Lock Plates

Lock plates are used to secure fasteners in high‑vibration, high‑temperature assemblies such as casings, combustor hardware, bearing housings, and accessory mounts. These gas turbine parts protect critical interfaces from separation, fretting, or misalignment.

Orifice Plates

Gas turbine orifice plates are used to meter, restrict, or balance air, fuel, or cooling flows. They contain calibrated apertures that create a predictable pressure drop. Their accuracy is essential for fuel-to-air ratio control, cooling-air management, and overall turbine efficiency and reliability.   

O-Rings

Metal O-rings for gas turbines are high-pressure sealing elements that are used in combustors, exhaust sections, fuel systems, and casing interfaces where elastomeric seals can’t survive. Their hollow or solid cross-sections may incorporate pressure-energized designs.

Pins

Pins are precision‑machined alignment and retention components used to locate, secure, or hinge critical turbine hardware such as casings, diaphragms, vane rings, fuel‑system brackets, and accessory mounts. Their tight tolerances ensure repeatable assembly.

Piping

Gas turbine piping includes fuel‑delivery lines, atomizing‑air piping, lube‑oil supply and scavenge lines, compressor bleed‑air circuits, and cooling‑air manifolds. Precision bends, welded joints, and rigid supports ensure leak‑free operation.

Piston Rings

Piston rings are precision sealing elements used in fuel control systems, actuators, and accessotry gearboxes. These gas turbine parts provided controlled sealing between reciprocating or rotating components under high temperatures and pressures.

Piston Rods

Piston rods are precision-machined actuator components used in fuel control systems, variable geometry mechanisms, and accessory gearboxes where linear motion is transmitted with high accuracy and durability. They interface with piston rings or bushings.  

Pistons

Pistons operate within cylinders to position IGVs, fuel‑metering valves, and bleed‑air controls. Their accuracy and sealing performance are essential for stable control response, reliable fuel delivery, and long‑term turbine system integrity.

Rotor Bolts

Rotor bolts are ultra‑high‑strength fasteners used to clamp rotor wheels, spacers, and shaft sections into a single, dynamically stable assembly. They’re essential for maintaining rotor concentricity, preventing joint separation, and ensuring long‑term reliability and balance.

Shims

Shims are precision‑engineered spacing elements that are used to fine‑tune alignment, preload, and dimensional clearances across turbine assemblies such as bearing pedestals, accessory gearboxes, fuel‑system brackets, IGV mechanisms, and casing joints.

Shroud Blocks

Shroud blocks are high‑temperature structural segments that form the stationary inner flowpath around the turbine blade tips. These gas turbine parts are installed circumferentially within the turbine casing and protect it from direct hot‑gas exposure. 

Sleeves

Gas turbine sleeves are cylindrical components that provide controlled bearing surfaces, alignment, or wear protection within rotating and stationary assemblies. They’re installed in bearing housings, linkage joints, actuator mechanisms, and accessory‑drive interfaces

Spacers

Spacers iare used to establish fixed axial or radial distances between components in gas turbine rotor assemblies, casings, bearing systems, combustor hardware, and accessory mechanisms.

Studs

Studs are high‑strength, permanently installed threaded fasteners used to secure casings, flanges, bearing housings, combustor components, and high‑temperature ducting. Unlike bolts, these gas turbine parts remain fixed in one component.

Thermocouple Accessories

Thermocouple accessories include protection tubes, compression fittings, adapters, junction boxes, extension leads, spring-loaded mounts, and shielding hardware that are designed to secure thermocouples at combustor, exhaust, bearing, and casing measurement ponts.

Thermocouples

Thermocouples are high-temperature sensing elements that feature sheathed designs for mechanical protection. They’re used throughout the gas turbine, including at combustor outlets, exhaust gas paths, bearing compartments, and casing surfaces.

Transport Devices

Transport devices are handling and support fixtures that are used with major turbine components during maintenance, overhaul, and installation. They include rotor lifting beams, casing support frames, combustion basket carriers, and transition piece racks. 

Washers

Washers are precision‑engineered load‑spreading and alignment components used in bolted joints throughout the turbine, including casings, bearing housings, combustor assemblies, accessory mounts, and high‑temperature ducting.

Made in USA Manufacturer of Gas Turbine Parts

Greno Industries is a Made in USA manufacturer of gas turbine parts. Whether you’re building new turbines or supporting service and overhaul work, our team delivers the machining expertise and reliability required for mission-critical power generation equipment.

Contact Greno Industries to discuss your gas turbine component requirements.

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