Steam Turbines

UNEW Industries manufactures, repairs and services the steam path, rotor and valve components of steam turbines — utility units in power plants, and the industrial and mechanical-drive units that run pumps, compressors and generators in refineries, petrochemical plants and process industries. We supply the parts a turbine consumes over its life, refurbish the parts and rotors that come out, and run the outages in which they are exchanged.

Our parts are manufactured to aviation standards and meet or exceed OEM specification. Steam turbine work is delivered by the same organization, under the same procedures and documentation, as our gas turbine long-term service agreements.

What We Do

Fleet Coverage

We supply parts and services for utility, industrial and mechanical-drive steam turbines of the manufacturers listed below. Configuration suffixes and plant-specific variants are covered on the base model.

Parts Supply

Capital Parts

We manufacture the complete capital parts scope of the steam turbine — rotating and stationary steam path, seals, bearings and valve internals — as complete stages or individual items.

Parts are supplied serialized, under UNEW part numbers cross-referenced to the OEM part number, and delivered with certificate of conformance, material certificate, dimensional record, NDE record and, for blades, the frequency and moment-weight record. We maintain a minimum of one spare set in inventory for every model we support.

Consumables

Every inspection consumes a defined kit of parts. We supply complete inspection kits or individual items: casing and flange gaskets, gland packing rings, seal strips, high-temperature studs, nuts and bolting, shims and spacers, lock plates and tab washers, oil seals, insulation and lagging.

Operational Spares

The parts that keep the unit running between inspections: governor and trip hydraulics, servo valves, speed probes and LVDTs, vibration and axial-displacement probes, thermocouples and RTDs, lube and control oil filters, turning-gear components, and control system cards and I/O modules.

How We Make Parts

We hold the technical data for every part we supply. Parts not yet in our library are reverse engineered from a used sample (see Reverse Engineering below). From the first order onward the part is a UNEW product with a UNEW part number, and repeat orders are manufactured to the same data.

Because the data is ours, we manufacture only what is required — the damaged row, or the damaged blades within a row — rather than obliging operators to buy a complete stage.

Materials and Coatings

Reverse Engineering

Reverse engineering is how we bring a new part into production — for any steam turbine make and model, whether or not it appears in the fleet list above. We work from a used part: a blade, shroud, seal or valve internal removed at an inspection is all we need. The result is a complete technical package held by UNEW Industries — drawings, material specification, surface treatment, process routing and inspection plan — from which the part is manufactured as a UNEW product.

Reverse engineering is also what makes partial replacement possible. Once we hold the exact geometry, we manufacture the damaged blades of a row to fit the shroud and wheel already on the rotor, or a complete new stage set that fits the existing wheel — whichever the condition of the rotor calls for.

Repair and Refurbishment

We refurbish steam turbine rotors, blading, diaphragms, seals and valve internals of any origin — OEM or non-OEM. The objective is set at receipt: return the rotor for further service intervals at design dimensions, balanced and documented.

Incoming Inspection

Every rotor or component set begins with a documented incoming inspection: visual, dimensional and runout survey, magnetic particle and fluorescent penetrant examination, ultrasonic examination of wheels and shaft, blade and shroud condition row by row, and metallurgical sectioning of a coupon where the condition of the base material is in question. The report classifies each part as light, medium or heavy repair, with every classification anchored to measured values, and identifies before any work begins the parts to be replaced new.

Refurbishment Process

Each rotor or component set is returned with a final refurbishment report — per-part serial record, repair level, measurements, balancing and overspeed record — and a refurbishment acceptance letter for the complete scope.

Aviation-Standard Restoration

The processes we apply to steam turbine parts are the processes of our aviation workshop: laser cladding, HVOF coating, diffusion treatments, 5-axis machining and calibrated frequency and moment-weight benches. Wear parts replaced during repair are replaced with higher-grade material than the original. The result is a part that runs longer than it did when new.

Maintenance and Outage Services

Track Record

• Steam turbine parts and services for refinery and petrochemical operators in Southeast Asia — mechanical-drive turbines on boiler feed water pump and compressor service, from single-stage units to multi-stage machines.

• Stage replacement on built-up rotors: complete new blade rows with tip covers, retaining strips and locking hardware manufactured from reverse-engineered samples, fitted, high-speed balanced and overspeed tested.

• Delivered under the same long-term service agreement framework as our gas turbine fleets in Southeast Asia, the Middle East, North Africa and South America.