Custom Forged Gas & Steam Turbine Blade Steel Flat Rectangular Bars Manufacturer in China
Looking for a custom forged gas turbine blade steel flat rectangular bars manufacturer or a forged steam turbine blade steel flat rectangular bars supplier? This page gives buyers, EPC contractors, turbine OEMs and maintenance teams a direct technical overview of Jiangsu Liangyi's forging capability, supported grades, heat treatment routes, inspection standards, export documentation and representative global project experience.
Engineers and procurement teams can quickly compare the capabilities of turbine blade steel flat bar manufacturers, the supply range of forged compressor blade steel flat bars, material grade selection, QA coverage and delivery support, and then move on to the complete technical details below.
What Global Buyers Can Confirm on This Page
- Supported turbine output range, forging sizes, single-piece weight and custom drawing-based manufacturing scope.
- Available material families from martensitic stainless steel to nickel-based superalloys for specific operating temperatures and service environments.
- Melting routes, heat treatment capability, NDT scope, mechanical testing coverage and traceability controls before shipment.
- International standards, EN 10204 3.1 / 3.2 certificate readiness and third-party inspection support for EPC and OEM orders.
- Representative uses scenarios, delivery experience across major export regions and the information buyers need before RFQ approval.
Page Guide
Common Buyer Concerns Before Ordering Turbine Blade Steel Flat Bars
Buyers usually compare more than just prices. They need to reduce incorrect grade choice, hidden internal defects, inconsistent heat treatment, missing EN 10204 certificates, delivery delays and mismatch between drawing requirements and supply condition. The following points explain how our supply process handle those purchasing risks.
Wrong Material Grade Choice
For each project, we will match based on the working temperature, corrosive environment, blade position and regional standard requirements, then determine the recommended martensitic stainless steel, PH stainless steel, heat-resistant steel or nickel-based alloy route.
Hidden Internal Quality Risk
Open die forging for turbine blade steel flat bars is supported by full chemistry review, macro and microstructure examination, hardness testing, 100% UT, MT/PT where required, and residual stress checks to reduce internal defect and property inconsistency risk.
Traceability and Certificate Gaps
Every order can be linked to heat number, remelting route, forging batch, inspection records and EN 10204 3.1 or 3.2 document so procurement, QA and end users can verify the full manufacturing trail.
Delivery Delay or Export Mismatch
Before production starts, we confirm grade, sizes, machining allowance, heat treatment condition, inspection plan, and export document list to reduce rework, approval delays and customs or EPC handover issues.
Product Overview
Jiangsu Liangyi Co., Limited is an ISO 9001:2015, ISO 14001, ISO 50001, ISO 3834-2, ISO 9712, ISO/IEC 17025, NORSOK M122, and NORSOK M123 certified manufacturer in China specializing in custom forged gas turbine blade steel flat rectangular bars, forged steam turbine blade steel flat rectangular bars, forged compressor blade steel flat bars, and other blade blanks for thermal and combined-cycle power generation systems. With over 25 years of open die forging experience, we serve power plant operators, EPC contractors, turbine OEMs and maintenance teams in more than 60 countries.
The custom forged turbine blade steel flat bars we make for turbine systems range from 20MW to 1800MW. We choose the right ones to provide the right mix of high-temperature strength, creep resistance, thermal fatigue performance, corrosion resistance, and long-service stability in real-world project conditions.
| Product Name | Forged gas & steam turbine blade steel flat rectangular bars for 20MW-1800MW turbine systems. |
|---|---|
| Manufacturing Scope | Open die forging, steel melting, heat treatment, machining, non-destructive testing and full export document in one supply chain. |
| Available Grades | Martensitic stainless steel, precipitation hardening stainless steel, heat-resistant martensitic steel and nickel-based superalloys. |
| Standards | ASTM, AISI, DIN EN, GOST, JIS, API, EN 10204 and project-specific customer specifications. |
| Inspection Coverage | Mechanical testing, impact testing, macro/microstructure review, hardness, full chemistry, 100% UT, MT/PT, residual stress checks and internal defect testing. |
| Export Support | EN 10204 3.1 / 3.2 certificates and third-party inspection support from TÜV, DNV, BV, LR, ABS, and RINA. |
Main Production Advantages & Manufacturing Capability
A Full Customizable Size Range
Our forged steel turbine flat bars support a fully customizable size range to fit all turbine models: thickness from 10mm to 800mm, height from 10mm to 800mm, maximum length up to 8 meters and single-piece weight up to 30 tons.
A Complete Internal Production Chain
From steelmaking, open die forging, heat treatment, machining to non-destructive testing, we control the entire production process to strictly control quality and shorten the delivery time for customers.
Advanced Melting Technology
We adopt industry-leading melting processes,including EAF + LF + VD/VOD, ESR (Electroslag Remelting) and VIM (Vacuum Induction Melting),to maximize the purity of steel, reduce inclusions and enhance the fatigue life of blades.
Global Standard Compliance
All products meet with international standards such as ASTM, AISI, DIN EN, GOST, JIS, API, etc., and can meet the specific requirements of markets in Europe, North America, the Middle East, Southeast Asia, etc.
Melting Process & Guide To Material Grade Choices
To meet the different operating conditions of global turbine projects, we adopt customized melting processes for all our forged steel turbine blade flat bars. Our standard melting process is EAF + LF + VD/ESR, we can upgraded to other vacuum melting processes according to clients' requirements. For nickel-based superalloy forged turbine blades, we use consumable electrode vacuum remelting or vacuum induction melting to make sure to get good high-temperature performance and material uniformity.
Available Material Grades & Use Scenarios
We support the full range of international standard material grades for turbine blade forging and provide targeted suggestions based on different working conditions and regional standards:
Martensitic Stainless Steel (Subcritical & Industrial Turbines)
- 1.4006, X12Cr13, AISI 410, GOST 12CH13, 1CH13: General materials for 20MW-200MW industrial steam turbine blades, conforming to the GOST standards of the Commonwealth of Independent States and the ASTM standards of North America
- 1.4021, X20Cr13, AISI 420, GOST 20CH13, 2CH13: Low-pressure turbine blades have higher hardness and wear resistance, and are widely used in industrial self-owned power plants in Southeast Asia
- 403Cb, 410Cb, B50A790, XM-30, UNS S41040; AISI 422, SUH 616, 1.4935, X20CrMoWV12-1; F6NM, 1.4313, UNS S41500, X3CrNiMo13-4: Special modified grades for high-humidity and corrosive environments, suitable for coastal power plants in Oceania and Southeast Asia
Precipitation Hardening (PH) Stainless Steel (Medium & Large Thermal Power Units)
- 1.4542, X5CrNiCuNb16-4, AISI 630, 17-4PH, GOST 05CH16N4D2B: The most widely used PH grade for 300MW-660MW thermal power turbine blades, compliant with all major international standards, used in our Southeast Asia 600MW power plant projects
- 1.4545 XM-12, 15-5PH, X5CrNiCuNb15-5; XM-25, UNS S45000, 1.4594, X5CrNiMoCuNb14-5, Custom 450; FV520B: High-toughness modified grades for critical rotating blades, suitable for European combined cycle power plants
Heat-Resistant Martensitic Steel (Supercritical & Ultra-Supercritical Units)
- 1.4923, X22CrMoV12-1, GOST 20CH12VNMF, 2CH12VNMF: Classic 12%Cr heat-resistant steel for high-pressure turbine blades of 600MW-1200MW units, fully compliant with DIN EN standards for German and European power markets
- 1.4913, X19CrMoNbVN11-1, GOST 18CH11MNF; 1.4938 (1.4939), X11CrNiMo12, GOST 11CH11N2V2MF, GOST CH12N2VMF; 1.7709, 21CrMoV5-7, GOST 25CH1M1F: Advanced grades for ultra-supercritical units, used in China 1000MW ultra-supercritical power projects
- 1.4906, X12CrMoWVNbN10-1-1; 1.4938, X12CrNiMoV12-3, UNS S64152, M152; X4CRNIMO16-5-1, 1.4418; 1.4962, X12CrNiWTiB16-13, X10CrNiW17-13-3: Ultra-supercritical grade for 1000MW+ units, with great high-temperature creep resistance
Nickel-Based Superalloys (Heavy-Duty Gas Turbines & High-Temperature Uses)
- Haynes 188, Haynes 230: Cobalt-based superalloys are used for ultra-high-temperature gas turbine blades and are suitable for gas turbine projects of over 900MW in the Middle East
- Inconel 718,2.4668,UNS N07718; Inconel X-750, 2.4669, UNS N07750: The most widely used superalloy for industrial gas turbine blades, conforming to API and ASTM standards in the North American and global markets
- Nimonic 80A, 2.4952, 2.4631, UNS N07080; Nimonic 90, 2.4932, UNS N07090: High-temperature creep-resistant grades for European gas turbine OEMs
- AISI 660, A286, 1.4980, UNS S66286; Refractory material 26, R-26: A cost-effective high-temperature grade suitable for industrial turbines in South America and Africa
Procurement Decision Flow for Custom Forged Turbine Blade Steel Flat Bars
For industrial B2B purchasing, the fastest way to reduce technical and commercial risk is to confirm the order in a fixed sequence. This process is particularly useful for buyers purchasing custom forged turbine blade steel flat bars, Inconel 718 turbine blade forgings, 17-4PH turbine blade steel flat bars or project-specific turbine blade steel flat bar supplier services.
Define The Service Conditions
Before confirming the grade, confirm the turbine type, operating temperature, corrosion exposure, required standards, drawing status and final delivery conditions.
Choose Grade and Melting Route
Match the project to martensitic stainless steel, 17-4PH or 15-5PH, 12%Cr heat-resistant steel, or nickel-based alloys such as Inconel 718 and Inconel X-750, then define EAF + LF + VD/VOD, ESR or VIM as required.
Lock Inspection and Certification
Agree the mechanical testing plan, NDT scope, third-party witness requirement, EN 10204 3.1 / 3.2 certificate type and any EPC or OEM acceptance criteria.
Confirm The Shipment and Logistics
Determine the sizes, machining allowances, packaging methods, required documents and shipping plans so that the production and export teams can work based on the same approved list.
Professional Heat Treatment Services
We provide professional heat treatment services for our forged steel gas and steam turbine blading steel and we will custom heat treatment processes according to material grade and use requirements to optimize the mechanical properties:
- Annealed treatment (softening annealing, isothermal annealing)
- Quenched + tempered treatment (core process for turbine blade steel to get optimal strength and toughness)
- Stress-free annealed treatment (eliminate residual stress after forging and machining)
- Solution annealed treatment (for PH stainless steel and nickel-based superalloys)
- Ageing treatment (precipitation hardening for PH steel and superalloys)
All heat treatment processes are completed in our 10+ advanced numerical control heat treatment furnaces, with real-time temperature monitoring and full process traceability, fully compliant with Nadcap and international heat treatment standards.
Strict Quality Control & International Inspection Standards
Quality is the core of our forged turbine blade products. All of our forged steel turbine blade flat bars undergo strict full-process testing and inspection before delivery,and we will provide a full set of traceable materials from raw material ingots to finished products.
Full-Item Testing & Inspection
Each batch of turbine blade steel bars undergoes the following tests to make sure to meet the project requirements:
- Mechanical properties testing (tensile strength, yield strength, elongation, reduction of area)
- Impact toughness testing (room temperature and low temperature, FATT Fracture Appearance Transition Temperature testing)
- Macrostructure and microstructure examination, grain size and cleanliness rating
- Hardness testing (Brinell, Rockwell) and size accuracy control
- Non-destructive testing (100% ultrasonic testing, periscopic testing, surface magnetic particle/penetrant testing)
- Chemical composition analysis (full element spectrum analysis, trace element control)
- Residual stress measurement and fracture morphology analysis
Implement International Inspection Standards
All inspections are strictly carried out in accordance with the latest international standards and meet the requirements of global certification bodies:
- ASTM E 8 / ASTM E 8M: Tension Testing of Metallic Materials
- ASTM E 10: Brinell Hardness of Metallic Materials
- ASTM E 21: Elevated Temperature Tension Tests of Metallic Materials
- ASTM E 103: Rapid Indentation Hardness Testing of Metallic Materials
- ASTM E 112: Determining Average Grain Size
- ASTM E 139: Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic Materials
- ASTM E 292: Conducting Time-for-Rupture Notch Tension Tests of Materials
- ASTM E 354: Chemical Analysis of High-Temperature Alloys
- EN 10204: Material Certificate Standards
- ISO 9712: Non-Destructive Testing - Ultrasonic Testing
QC Acceptance Process Before Delivery
Each batch of forged turbine blade flat bars of ours must go through the following 8-step acceptance process of our QC department before delivery:
- External surface visual examination
- Full size and marking verification
- Chemical composition full element analysis
- Mechanical properties and hardness testing
- Macrostructure and microstructure examination
- Residual stress measurement
- 100% ultrasonic non-destructive testing
- Periscopic internal defect testing
Global Industry Uses & Project Cases
Our forged steel steam turbine flat bars are widely used in 20MW – 1800MW steam and gas turbines worldwide, covering all major power generation sectors and industrial uses. We have accumulated rich project experience in global core markets, with fully localized solutions for different regional standards and working conditions.
Main Use Industries
- Thermal power generation (subcritical, supercritical, ultra-supercritical units)
- Gas turbine combined cycle power plants (CCPP)
- Nuclear power plant emergency steam turbines
- Biomass and waste-to-energy power plants
- Industrial captive power plants (steel, chemical, cement, mining industries)
- Marine power and shipboard steam turbine systems
- Hydrogen gas turbine and new energy power generation systems
Global Representative Project Cases
Europe - Germany 1200MW Combined Cycle Power Station
Supplied X22CrMoV12-1 (1.4923) forged gas turbine blade steel flat bars for a 1200MW combined cycle power station in Germany. The products met the DIN EN standards, passed strict TÜV third-party inspection and have been operating stably for over 6 years.
North America - USA 800MW Gas Turbine Power Project
Provided Inconel 718 (2.4668) forged turbine blade steel bars for the 800MW gas turbine project in the United States. They met ASTM and ASME standards, had ABS third-party certification and met the strict requirements of North American power grid safety standards.
Middle East - Saudi Arabia 900MW Gas Turbine Power Plant
We supplied forged turbine blade flat bars made of Haynes 230 and Inconel X-750 for a 900MW gas turbine power plant in Saudi Arabia. The products had great high-temperature oxidation resistance and anti-sulfur corrosion performance, they were suitable for the harsh desert high-temperature environment.
Southeast Asia - Thailand 600MW Thermal Power Plant
Supplied 17-4PH (1.4542) forged steam turbine blade steel bars for a 600MW thermal power plant in Thailand. The products are designed for high-humidity coastal environments, they have good corrosion resistance and support the stable operation of the plant's base load power generation.
China - 1000MW Ultra-Supercritical Thermal Power Unit
Supplied X12CrMoWVNbN10-1-1 (1.4906) forged steam turbine blade rectangular bars for domestic 1000MW ultra-supercritical thermal power units. The product met the strict requirements of ultra-high parameter (600℃+) power generation equipment and had leading fatigue life performance.
Oceania - Australia Mining Captive Power Plant
Provided AISI 410 (1.4006) forged turbine blade flat bars for a 300MW mining captive power plant in Australia. They were in accordance with Australian standards, with full impact toughness testing, adapting to the harsh working conditions of mining industrial power generation.
International Certifications & Delivery Document
Global Authoritative Certifications
All our forged turbine blade rectangular bars are produced in strict accordance with the international management system standards, and have obtained the following authoritative certifications to support global market access:
- ISO 9001:2015 Quality Management System
- ISO 14001 Environmental Management System
- ISO 50001 Energy Management System
- ISO 3834-2 Welding Quality Management System
- ISO 9712 Non-Destructive Testing Certification
- ISO/IEC 17025 Laboratory Accreditation
- NORSOK M122 & M123 Offshore Standard Certification
We can provide EN 10204 3.1 and 3.2 material certificates for all products, issued and verified by authoritative third-party institutions including DNV-GL, BUREAU VERITAS, LLOYD’S REGISTER, ABS, RINA, and TÜV.
Complete Delivery Documentation
Each forged turbine flat bar blank will be delivered to the customer with a complete official material certificate, which fully specifies the following details to meet global customs clearance and project acceptance requirements:
- Heat No. (for ESR and VAR metal - original heat No. and remelting heat No.)
- Blank No. and batch No.
- Order No. and customer PO No.
- Drawing No. and technical specification No.
- Steel grade and material standard
- Steel melting and pouring process details
- Full element chemical composition report
- Hydrogen content test report for large-size blanks (as required)
- Mechanical and hardness test results (with sampling location diagram)
- Macrostructure and microstructure examination report
- 100% ultrasonic testing report and NDT results
- Residual stress measurement results
- Periscopic testing report
- Impact test fracture data and full manufacturing process records (ingot weight, forging ratio, heat treatment parameters, straightening details)
RFQ Preparation Checklist for Faster Technical Quotation
If the buyer sends the following information during the RFQ stage, the accuracy of the quotation will be improved and the project communication between the business and technical teams will also become faster.
| Drawing or Size Data | Overall sizes, machining allowance, tolerances, and whether the part is supplied as forged only, rough machined, or heat-treated condition. |
|---|---|
| Material Requirement | Preferred grade such as 17-4PH, 15-5PH, 1.4923, 1.4906, Inconel 718, Inconel X-750 or an equivalent project specification. |
| Operating Condition | Turbine type, operating temperature, corrosion environment, and whether the component is for steam turbine, gas turbine, compressor, or retrofit service. |
| Inspection Requirement | UT level, MT/PT requirement, third-party inspection witness, sample location, mechanical testing scope and certificate type. |
| Commercial and Delivery Terms | Required quantity, target lead time, delivery destination, packing instructions and document package needed for customs clearance or EPC approval. |
Frequently Asked Questions
The best material depends on the working temperature, corrosive environment and usage stress. For medium-temperature industrial gas turbines up to approximately 550°C, 17-4PH and 15-5PH are typically cost-effective options. For higher temperature heavy-duty service above about 600℃, Inconel 718, Inconel X-750 and selected Nimonic grades are mainstream options because they provide stronger creep resistance and oxidation resistance.
We can produce forged turbine blade steel flat bars with a thickness ranging from 10 millimeters to 800 millimeters, a height from 10 millimeters to 800 millimeters, a length up to 8 meters, and a single piece weight up to 30 tons. Custom sizes can be produced according to drawings and approved technical requirements.
Our forged turbine blade steel products are in accordance with ASTM, AISI, DIN EN, GOST, JIS, API and project-specific technical specifications. Inspection and certification requirements can also be aligned with EPC, OEM, and end-user approval standards.
Normal lead time is about 25 to 35 days for stainless steel and comparable grades, and around 35 to 45 days for nickel-based superalloy projects depending on melting route, size, testing scope and machining condition. For urgent demand, expedited schedules can be discussed after technical review.
Yes. We support third-party inspections by institutions such as TUV, DNV, BV, LR, ABS, and RINA. EN 10204 3.1 or 3.2 certification can be accepted and project-specific reporting requirements can be met.
MOQ depends mainly on grade, sizes and melting route rather than a fixed universal number. Trial orders, sample quantities and project-based batches can be discussed, especially when buyers provide clear drawings, test requirements and delivery conditions.
Yes. Depending on the project, we can supply forged only, rough machined, heat-treated or combined forged and machined condition. Buyers should define machining allowance, straightness requirements, heat treatment condition and final inspection scope during RFQ review.
17-4PH stainless grades and the ones with similar PH are often used for medium-temperature service where a balance of strength, toughness and corrosion resistance is needed. 12%Cr heat-resistant martensitic steels such as 1.4923 are widely used for steam turbine uses which require high-temperature strength and creep resistance. Inconel 718 turbine blade forging is more suitable for higher temperature gas turbine service where oxidation resistance and creep performance are more demanding.
Depending on contract scope, the delivery package can include heat number traceability, chemical composition report, mechanical test report, hardness results, macro and microstructure report, NDT report, size inspection report, heat treatment record, packing list, and EN 10204 3.1 or 3.2 certificates.
For faster quotation, buyers should send drawings or main sizes, preferred grade or standard, turbine type, operating temperature, inspection plan, certificate requirement, quantity, destination and target delivery time. This allows the technical and sales teams to issue a more accurate commercial and manufacturing proposal.
Contact Us for A Custom Forged Turbine Blade Steel Solution
We welcome inquiries about custom forged steel flat rectangular bars for gas and steam turbine blades, forged steel flat bars for compressor blades, grade selection support, and RFQ review of global power generation projects. Our technical and sales teams can provide quotation guidance, manufacturing opinions and document confirmation after reviewing your drawings and usage conditions.
Inquiry Email: sales@jnmtforgedparts.com
Phone/WhatsApp: +86-13585067993
Official Website: https://jnmtforgedparts.com
Factory Address: Chengchang Industry Park, Jiangyin City, Jiangsu Province, China