GT11NM Spare Parts We Manufacture
ZURN Power covers the GT11NM parts scope for the uprated version of the ABB / Alstom GT11N1 (M = uprate), delivering approximately 12% more output than the 84 MW base rating. Component families are produced in-house against OEM drawings or reverse-engineered from a supplied sample, with material and dimensional control matched to OEM specification. We are an independent alternative manufacturer — not an authorized OEM distributor.
- Turbine Blades — hot gas path rotor blades for the GT11NM expander, in nickel-base superalloy with optional thermal barrier coating.
- Turbine Vanes & Nozzles — nozzle segments and vane rows for hot gas path service, cast and coated to drawing.
- Combustion System Hardware — burner parts, liners and heat shields matched to the unit combustor arrangement.
- Compressor Blading — compressor rotor blades and stator vanes, diaphragms and seal strips.
- Rotor Components — rotor spacers, sealing rings, coupling and balance hardware to drawing.
GT11NM Hot Gas Path Components
Maintenance cost on the GT11NM concentrates in the hot gas path: rotor blades, nozzle segments and shroud hardware run at high metal temperature with cooling air that degrades over time. ZURN Power manufactures GT11NM hot gas path components in Inconel 738-class and equivalent nickel-base superalloys — IN738LC, IN738, EEQ111 and Mar-M247 as the drawing requires — with thermal barrier coating applied on request. Castings are produced by vacuum investment casting, consolidated by HIP and vacuum heat treatment, then finished by 5-axis machining and verified with full dimensional reports, so replacement parts install without rework and keep the inspection interval on schedule.
GT11NM Combustion System Parts
The GT11NM uses the silo-type combustor arrangement of the ABB / Alstom heavy-duty line. Burner hardware, combustor liners, tile carriers and heat shield tiles differ by frame revision and by any conversion or uprate already applied to the unit. Send the combustor arrangement or drawing with the RFQ and we quote hardware that matches — burner internals, liners, tile carriers and heat shield tiles, with material traceability and EN 10204 3.1 certification.
GT11NM Compressor & Rotor Parts
The axial compressor drives output and heat rate across the whole machine. ZURN Power manufactures GT11NM compressor rotor blades and stator vanes in 12Cr martensitic stainless steels (X20Cr13 / 1.4313), 17-4PH and titanium alloys, plus diaphragms and seal strips, and rotor spacers and coupling hardware in 26NiCrMoV145 / 1CrMoV and IN718 — strictly to drawing. Blades are batch-inspected for profile, root fit and balance, supporting both full rotor overhauls and single-stage replacements.
Ordering from a Drawing or BOM
Ratings, stage counts and combustor arrangements vary by frame revision and by any uprate already applied. We do not guess part numbers — send the OEM number, drawing or a sample and we quote against it.
| Component family | What we need from you | Typical lead time |
|---|---|---|
| Turbine blading | Part number or drawing + revision | 8–14 weeks |
| Combustion hardware | Combustor arrangement / drawing | 8–14 weeks |
| Compressor blading | Stage + part number | 8–14 weeks |
| Rotor components | Drawing + material spec | 8–14 weeks |
Manufacturing Capability & Certification
ZURN Power (Jiangsu Roban Special Alloy Co., Ltd.) produces GT11NM spare parts by OEM-drawing machining and reverse engineering from supplied samples. Materials include Inconel 738-class and equivalent high-temperature alloys; thermal barrier coatings are applied in-house. Every shipment includes an EN 10204 3.1 material certificate and a dimensional inspection report; EN 10204 3.2 and third-party inspection are available on request. Standard lead time is 8–14 weeks.
Frequently Asked Questions
Which GT11NM parts does ZURN Power manufacture?
Turbine blades and nozzle segments, combustion system hardware including burner internals, combustor liners, tile carriers and heat shield tiles, compressor rotor and stator blading, and rotor spacers, sealing rings and coupling hardware — to OEM drawings or reverse-engineered to sample.
Do you also cover other Alstom GT models?
Yes. We manufacture and repair for GT11N1, GT11N2, GT11D4, GT11D5 as well. Component geometry and part numbers differ by frame and revision, so we quote against your part number or drawing.
Are your GT11NM components certified?
Yes. Every part ships with an EN 10204 3.1 material certificate traceable to heat lot and a dimensional inspection report; EN 10204 3.2 and third-party inspection (TPI) are available on request.
What is the lead time for GT11NM spare parts?
Standard lead time is 8–14 weeks for new manufacture depending on component type, coating requirement and casting complexity; repair and refurbishment runs 4–8 weeks. Outage-critical requests are accelerated on agreement.
How do I get a quote?
Email your part number, drawing or BOM to hanson@zurnpower.com or sales@zurnpower.com, or message Hanson on WhatsApp +86 186 1687 9105. Quotes for B2B projects are issued after drawing review.