Pump and Compressor Parts Manufacturing
for Precision Rotating Equipment

Greno Industries is a Made in the USA manufacturer of pump and compressor parts for multiple industries, including:

Whether you need precision machining and manufacturing for regular work or periodic service, we have the capabilities and experience you need.

Contact Greno Industries to discuss your application or request a quote.

Oil and Gas Parts from Greno Industries

The oil and gas industry requires components that perform reliably under extreme temperatures, high pressures, and corrosive environments. Greno provides oil and gas machining services for high-performance materials such as Inconel and other specialty alloys, ensuring durability, dimensional stability, and long-term reliability.

The parts we machine include:

Adapters

Adapters are specialized pipe fittings that connect components of different sizes, thread types, or connection styles. They ensure a secure, leak-free transition, allowing pipelines and assemblies to maintain their integrity under extreme operating conditions. Adapters require tight dimensional tolerances, proper thread engagement, and smooth sealing surfaces.

Adapter Plates

Adapter plates are flat, machined plates that connect two components with different bolt patterns, sizes, geometries, or mounting interfaces. They act as a structural transition piece, allowing equipment that wasn’t originally designed to fit together to be securely integrated without redesigning the entire assembly.

Adapter Plugs

Adapter plugs are sealing and connection components that close, convert, or transition ports, bores, or threaded openings in hydraulic, pneumatic, fuel, or pressure‑containing systems. They provide a leak‑tight barrier while allowing compatibility between different thread forms, diameters, or connection standards.

Adapter Sleeves

Adapter sleeves are precision‑machined cylindrical sleeves for mounting bearings or rotating components onto shafts, especially when the shaft diameter doesn’t perfectly match the component’s bore. These sleeves provide a secure, concentric fit without requiring the shaft to be modified.

Adaptor Rings

Adapter rings are circular components that connect, align, or transition between two parts with different diameters, bolt patterns, or mounting geometries. They make it possible to integrate components that weren’t originally designed to fit together.

Banjo Links

Banjo links are machined linkage components that connect a banjo fitting or banjo-style joint to an actuator, lever, or mechanical control system, allowing controlled motion transfer in compact or high-pressure assemblies. They provide a rigid, low‑profile connection where space is limited and where the joint must accommodate rotation or angular misalignment.

Banjo Pin Pullers

Banjo pin pullers are precision‑machined tools that are designed to extract or install pins used in banjo‑style fittings, banjo links, or compact hydraulic/mechanical joints. They provide controlled, damage‑free removal of tight‑tolerance pins in assemblies where access is limited and where the joint must maintain alignment and sealing integrity.

Ball Dropper Bodies

Ball droppers are mechanical or hydraulic devices that release activation balls into a wellbore on command. The balls travel downhole to open or close ports, isolate zones, or trigger specific tools during completions, stimulation, or intervention operations. Oil and gas industry applications incude multi‑stage fracturing and liner deployments.

Bolting

Bolting refers to the high‑strength fasteners used to clamp, seal, and structurally secure critical equipment across drilling, production, and refinery systems. They’re engineered to withstand extreme loads, vibration, pressure cycling, and corrosive environments. In oil and gas service, bolting is typically heat-treated for tensile strength and durability.

Bonnet

Bonnets are pressure‑containing covers that enclose and support the stem, packing, and internal components of valves. Bonnets bolt to the valve body and form part of the primary pressure boundary, ensuring that the valve can safely contain wellbore, process, or pipeline pressures.

Bull Plugs

Bull plugs are solid, threaded pipe fittings used to seal the ends of pressure‑containing lines or connections in oil and gas systems. They have male threads (NPT, API, or premium) and a tapered, rounded “bull‑nose” end so that they can be installed easily and withstand high internal pressures.

Cementing Head Bodies

Cementing heads are high‑pressure manifolds installed at the top of the casing string. They allow operators to pump cement slurry into the well and release the top and bottom cementing plugs in the correct sequence. Cementing heads enable circulation, plug launching, and displacement without breaking the surface connection.

Compressor Discs

Compressor discs are rotating components used in centrifugal compressors to hold and support the compressor blades while withstanding extreme mechanical and thermal loads. They form part of the rotor assembly and are critical for maintaining aerodynamic efficiency, structural integrity, and high‑speed balance.

Cylinder Side Plates

Cylinder side plates are flat, machined structural plates that enclose, support, or reinforce the sides of hydraulic, pneumatic, or mechanical cylinder assemblies. In the oil and gas industry, they help maintain alignment, protect internal components, and carry the loads transmitted through the cylinder body during operation.

Diaphragms

Diaphragms are flexible, pressure‑responsive sealing elements used to separate two chambers while allowing pressure or motion to be transmitted without leakage. They act as a barrier between fluids or gases and are commonly found in pumps, valves, actuators, and instrumentation. Metal diaphragms are used for high-pressure, high-temperature service.

Drive Shafts

Drive shafts are rotating, torque‑transmitting shafts that connect a power source to a driven component. In the oil and gas industry, they are designed to transfer mechanical power reliably under high loads, misalignment, and vibration. Applications include mud pumps and blending units, offshore cranes and subsea tooling, and hydraulic power units.

Drive Wiper Keeper Rings

Drive wiper keeper rings are retaining components that secure wiper elements on rotating or reciprocating drive assemblies. These oil and gas parts hold the wiper in its correct position so it can remove contaminants (e.g., mud, dust, drilling debris, hydraulic fluid film) from the shaft surface before it enters the housing or bearing system.

Flanges

Flanges are high‑strength connection interfaces that join pipes, valves, pumps, pressure vessels, and rotating equipment. They provide a rigid, leak‑tight, and serviceable joint capable of withstanding high pressure, temperature cycling, vibration, and corrosive fluids.

Flow Rings

Flow rings are annular components that condition, direct, or stabilize fluid flow inside pumps, compressors, turbines, and other rotating equipment. They help control velocity profiles, reduce turbulence, and maintain consistent hydraulic performance across the flow path in oil and gas industry applications.

Hold Down Collars

Hold‑down collars are heavy‑duty, precision‑machined rings installed on a shaft, mandrel, or tool string to secure components in place and prevent axial movement under load. They act as mechanical stops that lock oil and gas parts into position during rotation, vibration, or pressure cycling.

Hydraulic Motor Brackets

Hydraulic motor brackets are precision‑machined mounting structures that support and secure hydraulic motors to equipment frames, gearboxes, or driven components. They ensure the motor is held in the correct alignment, orientation, and load path so torque can be transmitted without excessive vibration, misalignment, or premature wear.

Inner Sleeve Spacers

Inner sleeve spacers are cylindrical or tubular components that establish controlled axial spacing, alignment, or load distribution between concentric shafts, sleeves, bearings, or housing features. They maintain critical stack‑up dimensions and ensure stable mechanical relationships under thermal, vibratory, and high‑load operating conditions.

Lock Bars

Lock bars are rigid, precision‑machined retention components used to secure, align, or mechanically lock assemblies in place under load. These oil and gas parts provide a positive mechanical restraint that prevents rotation, axial movement, or separation of mating parts during operation, vibration, or thermal cycling.

Lock Dogs

Lock dogs are robust, precision‑machined mechanical latches that engage, secure, or lock components in place under load. They provide a positive mechanical engagement that prevents rotation, axial movement, or unintended release of mating parts during operation, vibration, or pressure cycling.

Locking Segments

Locking segments are retention elements that secure, center, or mechanically lock components within a circular housing or bore. Multiple segments are typically installed in a ring configuration, creating a high‑strength, load‑bearing interface that prevents axial or radial movement under torque, vibration, or pressure cycling.

Nuts

Nuts are precision‑machined, internally threaded fasteners that clamp, secure, and preload bolted joints across rotating equipment, pressure‑containing systems, and structural assemblies. In the oil and gas industry, nuts must maintain joint integrity under vibration, thermal cycling, torque transmission, and dynamic loading.

Pins

Pin are precision‑machined cylindrical fasteners that locate, align, or secure components within rotating, reciprocating, or structural assemblies. They carry shear, bending, and bearing loads while maintaining tight positional accuracy under vibration, thermal cycling, and dynamic mechanical forces.

Piston Rings

Piston rings are precision‑machined sealing elements installed on pistons to control fluid leakage, maintain pressure, and manage lubrication within a reciprocating or rotary assembly. In the oil and gas industry, they provide reliable sealing under high temperature, pressure, and vibration.

Pistons

Pistons are reciprocating components that convert fluid pressure into linear mechanical force (or vice versa) within hydraulic, pneumatic, fuel‑control, or compressor assemblies. Pistons operate in close‑tolerance cylinders, maintaining controlled motion, sealing performance, and load transfer under high pressure, temperature, and vibration.

Ram Shafts

Ram shafts are high‑strength linear drive members that transmit force and motion in hydraulic, pneumatic, or mechanical ram assemblies. They deliver controlled, repeatable thrust while maintaining alignment, rigidity, and sealing integrity under extreme loads. Ram shafts are used in blowout preventers (BOP rams) and drilling rig equipment.

Ring Holders

Ring holders position, secure, or stabilize rings, seals, or segmented elements within a mechanical assembly. In compressors, hydraulic systems, and heavy-duty equipment, ring holders maintain concentricity, prevent axial shift, and ensure proper engagement of sealing or load‑bearing rings under dynamic operating conditions.

Seals

Seals are precision machined components that prevent fluid, gas, or particulate leakage between mating surfaces in rotating, reciprocating, or static assemblies while withstanding pressure, temperature cycling, vibrations, and mechanical loads. In the oil and gas industry, Inconel is used for high-pressure or high-temperature labyrinth and piston-ring-style seals. 

Torque Plates

Torque plates are structural components that distribute, react, or stabilize torque loads within bolted, clamped, or rotating assemblies. In compressors, hydraulic systems, and heavy equipment, torque plates ensure uniform load transfer, prevent distortion, and maintain alignment under high mechanical stress.

Turbine Plates

Turbine plates are precision‑machined structural or flow‑control components that support, align, or regulate the movement of air, fuel, or mechanical loads. Depending on the turbine section, these oil and gas parts may function as mounting interfaces, flow‑conditioning elements, sealing structures, or load‑bearing hardware. 

Turbo-Expanders

Turbo expander are high‑speed devices that convert the energy of high‑pressure gas into mechanical work by expanding it through a turbine wheel. They operate at extremely high rotational speeds and require tight‑tolerance components to maintain efficiency, stability, and reliability.

Valve Seats

Valve seats are precision‑machined sealing surfaces that interface with valve closure elements (balls, plugs, discs, or gates) to establish a leak‑tight shutoff under pressure. As critical pressure‑boundary components, valve seats maintain sealing integrity during repeated cycling, thermal expansion, vibration, and exposure to corrosive or erosive media.

Valves

In the oil and gas industry, valves need to maintain safe, reliable operation under high pressure, temperature cycling, vibration, and corrosive or erosive service conditions. Their performance depends on precision‑machined bodies, seats, stems, and actuation mechanisms.

Made in USA Manufacturer of Oil and Gas Parts

Greno is a Made in USA manufacturer of oil and gas parts. Whether you’re an energy producer, an OEM, or a service company, we combine precision manufacturing with unbeatable service. 

Contact Greno Industries for oil and gas parts.