Forged Steel Discs | Custom Forging Discs Manufacturer & Supplier from China
Jiangsu Liangyi Co., Ltd. was established in 1997 and is a professional manufacturer and supplier of high-quality forged steel discs, forging disks, also known as pancake forgings, which have passed the iso9001:2015 certification. We have more than 25 years of experience in producing open die forging. We can produce custom forged discs of different black and non-ferrous materials.serving customers in more than 50 countries across North America, Europe, Asia-Pacific, the Middle East, Africa and Oceania..
Our forged steel discs are engineered to have good mechanical properties, refined grain structure, good fatigue resistance and long-term reliability, making them the ideal choice for critical high-pressure, high-temperature, heavy-load industrial uses. We provide full end-to-end solutions from steel melting, forging, heat treatment, precision machining to full inspection, all in-house to ensure strict quality control and short lead times.
Last updated: 2026-03-30
What is a forged steel plate and why choose Jiangsu Liangyi?
Forged steel discs, also known as forged discs, forging disks or pancake forgings,are solid circular parts produced by open die forging to improve grain flow, reduce internal defects, and have higher strength than cast substitutes.
Jiangsu Liangyi manufactures custom forged steel discs made of carbon steel, alloy steel, stainless steel, nickel alloy, copper alloy, titanium and tool steel, etc.The diameter can reach t4 meters, the thickness is 1500 mm and the weight of a single piece is 30 tons. The company also provides heat treatment, machining, Non-destructive testing, traceability and EN 10204 3.1 / 3.2 certification for global industrial projects.
This page summarizes the product definition, common uses, material options, quality control standards and quotation requirements in one place for faster technical review.
Page Contents
Forged Steel Discs
| Product names | Forged steel discs, forged discs, forging disks, forged steel disks, pancake forgings |
|---|---|
| Manufacturing method | Open die forging with optional heat treatment, CNC machining and full inspection |
| Maximum size | Up to 4 m diameter and 1500 mm thickness |
| Maximum single weight | Up to 30 tons |
| Main material families | Carbon steel, alloy steel, stainless steel, nickel alloy, copper alloy, titanium alloy and tool steel |
| Quality documents | EN 10204 3.1B standard certificates, 3.2 third-party certification available on request |
| Main industries | Oil & gas, power generation, pressure vessels, shipbuilding, mining, steel mills, defence, aerospace, fertilizer and sugar plants |
| Export capability | Worldwide supply to more than 50 countries with technical and logistics support |
Why forged, not cast?
Forging improves grain structure and reduces porosity, which is why forged discs are preferred for pressure, temperature and fatigue-critical equipment.
Why is this supplier?
Jiangsu Liangyi offers a single-source workflow covering forging, heat treatment, machining, testing and documents, reducing coordination risks and lead time.
Who is this page for?
Procurement teams, engineers, EPC contractors and OEM buyers looking for custom forged disc blanks or finished machined parts for critical industrial use.
Our Forged Steel Discs Manufacturing Capabilities
To meet our global clients' different requirements for both small precision and large heavy-duty forged discs, we have equipped our 80,000㎡ modern production facility with industry-leading forging and machining equipment, including 1 ton, 3 tons, 5 tons, 9 tons open die forging electro-hydraulic hammers, 2000 ton, 4000 ton, and 6000 ton hydraulic forging presses, seamless rolling machines, and 10+ heat treatment furnaces. See our full forging equipment list for more details.
Full Set Of Downstream Processing Services
In addition to the open die forging of custom steel discs, Jiangsu Liangyi also offers a complete one-stop downstream processing service to deliver finished products, that is, assembled parts, without the need for different suppliers, shortening the delivery time of your project:
- Customized heat treatment (normalizing, annealing, quenching & tempering, solution treatment, aging) to optimize material mechanical properties for your specific uses
- High-precision CNC machining (turning, milling, drilling, grinding) to meet your custom drawing specifications and tight tolerance requirements
- Comprehensive mechanical property testing (tensile strength, yield strength, elongation, hardness, impact test, high temperature creep test)
- Full non-destructive testing (NDT) including Ultrasonic Testing (UT), Magnetic Particle Inspection (MPI), Penetrant Testing (PT), Radiographic Testing (RT), performed by certified inspectors
- Full material traceability and mill test certificates (MTC) accordance with EN 10204 3.1B / 3.2 standards
How To Customize The mMnufacturing Of Forged Steel Discs
For buyers, process control is as important as the final size. A reliable forging plate supplier should be able to explain the production route from raw material verification to final inspection.The manufacturing path below summarizes how Jiangsu Liangyi turns a steel billet or ingot into a traceable forged disc blank or machined finished part.
Raw Material Review
Before production commencing, confirm the traceability of chemistry, source documents, melting routes and materials.
Heating & Forging
Heat the billet to the specified forging range, control the deformation, refine the grain structure and increase the hardness.
Heat Treatment
It depends on the type of alloy and use requirements to decide what is suitable, normalizing, annealing, quenching and tempering, solution treatment or aging.
Rough machining/finishing
According to the tolerance of the drawing and the machining allowance plan, process the outer diameter, thickness, holes, surfaces and other required features.
Testing & NDT
Carry out size inspection, mechanical testing and required non-destructive testing, such as UT, PT, MPI or RT to verify the integrity of the product.
Documents & Shipments
Issue MTC and EN 10204 certification, prepare export documents and deliver the parts on FOB, CIF, EXW or DDP terms.
This level of process visibility enhances the buyer's confidence and assists EPC, engineering and QA teams during supplier evaluation and technical review.
Industry-Specific Forged Steel Discs Solutions & Global Cases
Our forged steel discs are widely used in main industries in over 50 countries around the world, meeting regional standards and industry-specific requirements. The following are our main industry solutions:
Oil & Gas and Petrochemical Industry
Regional Standards & Accordance
ASTM, ASME, API 6A, NACE MR0175, PED 2014/68/EU (EU Market), CSA (Canadian Market)
Main uses & Project Cases
Our forged discs are widely used as wellhead flange discs, separator end caps, valve body discs, choke valve discs, pressure vessel end closures, and tubing hanger blanks for onshore and offshore oil drilling projects, refinery processing units, and petrochemical pipeline systems. We have supplied high-quality forged discs for Middle East oilfield wellhead projects, North American shale gas projects, and European offshore petrochemical platforms, with material grades engineered to withstand sour service environments, high pressure and high temperature conditions.
Power Generation Industry
Regional Standards & Accordance
ASTM, ASME BPVC, EN, DIN, JIS, GOST (Russian Market)
Main Uses & Project Cases
Forged steel discs are main parts in thermal power, nuclear power, hydropower and renewable energy projects, including turbine rotor discs, generator end plates, boiler header discs, heat exchanger tube sheets and turbine runner discs. We supply forged discs for thermal power plants in Asia, auxiliary systems for nuclear power plants in Europe and hydropower projects in South America. These forged discs can withstand extreme pressure, high temperatures and long-term cyclic loading.
Pressure Vessel & Heat Exchanger Industry
Regional Standards & Accordance
ASME BPVC Section VIII, EN 13445, PED 2014/68/EU, AD 2000 (German Market), GB150 (Chinese Market)
Main Uses &Cases
Our forged steel discs are manufactured into tube sheets, container end seals, baffles, as well as flange blanks for shell and tube heat exchangers, high-pressure storage tanks, chemical reaction vessels and air coolers. We supply large-diameter forged tube plates for European chemical plants, Middle East seawater desalination projects and North American pharmaceutical processing facilities, and have conducted comprehensive non-destructive testing to ensure zero defects and accordance with global pressure vessel standards.
Shipbuilding & Offshore Marine Industry
Regional Standards &Accordance
ABS, DNV, LR, BV, NK (Japanese Market), KR (Korean Market), CCS
Main Uses & Project Cases
We supply forged discs for marine propeller shaft flanges, rudder stock discs, offshore platform structural connection discs, underwater equipment end caps, ship crane wheel discs, and marine valve body discs. Our corrosion-resistant forged discs have been applied to international commercial shipbuilding projects, European offshore wind farm support vessels, and Australian offshore oil and gas platforms, with materials specially chosen to resist harsh marine saltwater corrosion and heavy load conditions.
Mining & Cement Industry
Regional Standards & Accordance
AS (Australian Market), ASTM, EN, JIS
Main Uses & Project Cases
Our forged discs are used as crusher wear discs, grinding mill liner discs, rotary kiln support discs, heavy-duty gear blanks, mining conveyor pulley discs, and cement mill roller discs. We have supplied high wear-resistant forged discs for Australian iron ore mining mills, South African gold mining crushing equipment, and Southeast Asian cement production lines, offering great impact resistance, wear resistance and fatigue strength for continuous heavy load operations.
Steel Mill & Metallurgical Industry
Regional Standards & Accordance
DIN, EN, ASTM, JIS
Main Uses & Project Cases
Forged steel discs are used for work roll discs of rolling mills, support discs of continuous casting machines, coiling core cylinder discs, gear blanks of rolling mills and flange discs of steel production lines, etc. We have supplied forged discs to domestic and Southeast Asian steel mills, which had good wear resistance and high-temperature stability, and can withstand the harsh operating conditions of continuous steel production.
Defence & Aerospace Industry
Regional Standards & Accordance
AMS, ASTM, EN, military-grade material standards
Main Uses& Project Cases
We provide precision forged discs for defense equipment parts, aerospace engine mounting discs, aircraft structural support parts, and satellite launch vehicle parts. With the strict quality control, a full set of traceable materials , and precision machining capabilities, we supplied custom forged discs for European aerospace companies and domestic defense projects and they met the strictest industry requirements.
Fertilizer & Sugar Mill Industry
Regional Standards & Accordance
ASTM, ASME, EN
Main Uses & Project Cases
Our forged discs are applied to the corrosion-resistant end discs of fertilizer production reactors, sugar factory roller trays, evaporation vessel flanges and crystallizer tube plates. We provide professional alloy forged discs for fertilizer factories in South America and sugar factories in Southeast Asia. The materials are chosen to be resistant to corrosive chemical environments and high-temperature processing conditions.
Material Grades for Forged Steel Discs
We supply forged steel discs in accordance with the international standards such as ASTM, ASME, AISI, DIN, EN, JIS, API 6A, with a full set of traceable materials from steel melting to finished product. Our current material grades cover all industrial uses, and we can also produce custom alloy grades according to your specific requirements. Check our full forged material list for more details.
Guide On Material Choice
- Carbon & Alloy Steel:Suitable for general engineering, pressure vessel, power generation, and heavy machinery uses.They have good strength, machinability and cost-effectiveness and they are accordance with ASTM, EN, DIN standards for global markets.
- Stainless Steel:Austenitic, duplex, super duplex and precipitation-hardening grades, used in corrosion-resistant, high-temperature and hygienic chemical, petrochemical, food processing and Marine industries.
- Nickel & Super Alloys: chromium-nickel-iron alloy, Hastelloy, Monel alloy, etc., are suitable for extreme high temperature, high pressure and highly corrosive environments in the fields such as oil and gas, aerospace, chemical processing and nuclear power.
- Copper & Titanium Alloys: Good corrosion resistance, non-magnetic properties and high strength-to-weight ratio for marine, desalination, aerospace, and chemical processing uses.
- Tool & Die Steel: Hot work, cold work, and plastic mould steel grades for high wear resistance, high hardness uses in tooling, die casting, and plastic injection moulding industries.
Carbon & Alloy Steel
A182-F5, A182-F11, A182-F12, A182-F21, A182-F22, ASTM A182-F22V, A182-F91, A182-F92, ASTM A694-F42, ASTM A694-F46, ASTM A694-F48, ASTM A694-F50, ASTM A694-F60, ASTM A694-F70, ASME SA516 Grade 60, SA516-Grade 70, SA-350 LF2, SA-350 LF3, SA-350 LF5, SA-350 LF6, A36, ASTM A105, ASME SA266 Grade 2/Grade 4, ST37.2, C22.8, S235JR, S275JR, S355JR, AISI 1045, AISI 1050, AISI 4140, AISI 4130, AISI 4340, 42CrMo4, 25CrMo4, 12CrMo9-10, 18CrMoS4, 18CrNiMo7-6, 17CrNiMo6, 16MnCr5, St52-3, S355J2G3, 50CrMo4
Stainless Steel
A182-F6a, A182-F6b, A182-F304, A182-F304L, A182-F310, A182-F316, A182-F316L, A182-F317, A182-F317L, A182-F347, AISI 309, AISI 310S, AISI 316Lmod, A182-F48, A182-F321, A182-F348, Nitronic 50, Nitronic 40, Nitronic 60, Nitronic 30, XM-11, XM-10, UNS S21800, Alloy 20, 904L, PH13-8Mo, 17-4PH, 15-5PH, 17-7PH, PH15-7 Mo, 254SMO, AL-6XN, 654SMO, A182-F44, A182-F45, A182-F51, A182-F53, A182-F60, A182-F55, A182-F62, A182-F52, ASTM A182-F61, UNS N08028, UNS N08367
Nickel & Super Alloys
Nickel 200, Nickel 201, Monel 400, Monel R-405, Monel K-500, Hastelloy C-22, Hastelloy X, Hastelloy C-4, Hastelloy B-2, Hastelloy C-276, Hastelloy C-2000, Hastelloy B, Nimonic 75, Nimonic 90, Nimonic 80A, Nimonic 105, Nimonic 901, Inconel 600, Inconel 601, Inconel 617, Inconel 625, Inconel 686, Inconel 690, Inconel 693, Inconel 718, Inconel 725, Inconel X-750, Incoloy 800, Incoloy 800H, Incoloy 800HT, Incoloy 825, Incoloy 926, Incoloy 925, Incoloy 901
Copper, Brass & Copper-Nickel Alloys
UNS C36500, UNS C44300, UNS C44400, UNS C46400, UNS C46500, UNS C61300, UNS C61400, UNS C63000, UNS C70600, UNS C71500, manufactured in accordance with ASME SB171 standard
Titanium Alloys
ASTM/ASME SB381 accordance, available in Gr.1, Gr.2, Gr.5 (Ti-6Al-4V), Gr.7, Gr.12, Gr.16
Tool & Die Steel
AISI 6F7, AISI A2, AISI O1, AISI O2, AISI S7, AISI D6, AISI S1, AISI D2, AISI A6, AISI O7, AISI L2, H13, H11, H12, AISI L6, H21, H10, H10A, H19, 314, H19A, P20, P20+Ni, P20+S, S136, 718, SKT6, SKD12, SKD1, SKD2, SKS3, SKS41, SKS95, SKD11, DC53, SKS43, SKD61, SKD6, SKT4, SKD5, SKD7, SKD62, NAK80, 1.2767, 1.2363, 1.2510, 1.2080, 1.2436, 1.2542, 1.2379, 1.2824, 1.2550, 1.2509, 1.2210, 1.2344, 1.2606, 1.2782, 1.2678, 1.2889, 1.2605, 1.2343, 1.2714, 1.2581, 1.2365, 1.2779, 1.2661, 1.2083, 1.2311, 1.2312, 1.2738, 1.2316
How To Choose The Appropriate Material For Forging Discs
The choice of materials should be based on working temperature, pressure, corrosion exposure, mechanical load, manufacturing route, specification requirements and total life cycle cost. For most buyers, the best materials are not simply the strongest grade, but the grade that best meets the usage conditions, weldability, inspection requirements and procurement budget.
- Carbon and alloy steel: best for structural strength, pressure containment and cost-effective heavy-duty service.
- Stainless steel: preferred where corrosion resistance, cleanliness or higher oxidation resistance is required.
- Nickel alloys: Suitable for acidic environments, corrosive chemical media and continuous high-temperature environments.
- Copper alloys: Chosen for marine, seawater desalination and non-spark or high conductivity requirements.
- Titanium alloys:Suitable for low density, high specific strength and resistance to chlorine substances.
- Tool steels: ideal for wear-intensive or high-hardness industrial tooling uses.
If you already know your design code or service medium, sending the information together with size and required tests will usually shorten quotation time and improve material recommendation accuracy.
Quality Assurance & Certifications
At Jiangsu Liangyi, quality is the most important point in our business. Each piece of our forged steel discs is produced under the strict ISO 9001:2015 quality management system, and there is a full set of traceable materials from raw materials to finished products. We will control the quality at every stage of the production:
- Raw Material Inspection: All incoming steel billets undergo tests for chemical composition and mechanical properties, and have got comprehensive test certificates before production.
- Forging Process Control:Strictly monitor forging temperature, reduction ratio, and deformation process to make sure to get the refined grain structure and optimal mechanical properties.
- Heat Treatment Verification: Full documents of heat treatment parameters, with hardness testing and mechanical property testing after heat treatment to ensure accordance with standards.
- Machining Size Inspection:Advanced measuring equipment such as three-coordinate measuring machines are used for size inspection to ensure the sizes are within the tolerance as per the drawings.
- Final NDT & Certification: Comprehensive non-destructive testing is carried out by certified inspectors, and complete material inspection certificates are provided in accordance with EN 10204/3.1B (3.2 Third-party certification can be provided upon request).
Our Global Certifications & Accordance
Forged Steel Discs vs Cast Discs
Many buyers search for forged and cast discs together. The right choice depends on design risk, service conditions and total lifecycle cost. For pressure-retaining, load-bearing, impact-loaded or fatigue-sensitive uses, forged steel discs are generally the safer engineering choice because the forging route improves internal soundness and mechanical consistency.
| Comparison item | Forged steel discs | Cast discs |
|---|---|---|
| Internal quality | Better grain flow and lower risk of shrinkage defects or porosity when process control is correct. | Higher risk of internal discontinuities depending on casting quality and section thickness. |
| Mechanical properties | Usually higher toughness, fatigue resistance and structural reliability. | Often suitable for lower-duty uses but generally less robust under severe service. |
| Critical uses | Preferred for pressure vessels, oil and gas equipment, turbines, marine and heavy-duty rotating parts. | More common in less critical, lower-stress or cost-driven uses. |
| Machining allowance | The internal structure with stable machining allowance makes the machining and final inspection more reliable. | Extra attention may be needed in areas where internal defects may occur after processing. |
| Lifecycle cost | In some cases, the initial cost of life cycle cost is relatively high, but it usually has a lower risk of failure and better long-term value. | Lower upfront cost can be attractive, but service risk may be higher in demanding conditions. |
- If your part must withstand high pressure, cyclic load or impact, forging is usually the preferred route.
- If certification, third-party inspection and material traceability are required, forged discs are often easier to justify during project review.
- If the part is non-critical and budget is the main driver, cast alternatives may still be considered after engineering review.
Frequently Asked Questions (FAQ) About Forged Steel Discs
Forged steel discs, also known as pancake forgings, are solid round metal parts produced by open die forging. The process compresses steel under high force to refine grain flow, reduce the internal porosity and improve the mechanical strength, toughness and fatigue resistance compared with cast alternatives.
The maximum size we can make is up to 4 meters in diameter, 1500 mm in thickness and 30 tons in single-piece weight.
Available materials include carbon steel, alloy steel, stainless steel, duplex and super duplex stainless steel, nickel alloy, monel, hastelloy, inconel, incoloy, copper alloy, brass, titanium alloy and tool & die steel, manufactured to ASTM, ASME, AISI, DIN, EN and JIS requirements.
EN 10204 3.1 is a material inspection certificate confirming that the supplied forgings are in accordance with order requirements based on inspection and testing performed by the manufacturer. For projects needing independent witness or approval, 3.2 third-party certification can also be arranged on request.
Depending on the project, forged discs can be produced to ASTM, ASME, AISI, DIN, EN, JIS, API 6A, ASME BPVC and PED 2014/68/EU requirements, and can also satisfy classification society rules such as ABS, DNV, LR, BV, NK, KR and CCS for marine and offshore service.
Yes. In addition to open die forging, Jiangsu Liangyi offers downstream heat treatment, rough machining, finish CNC machining, drilling, milling, grinding, NDT and size inspection so buyers can receive near-net-shape or ready-to-install forged disc parts.
Forged discs generally have better structural integrity, impact toughness, fatigue life and pressure reliability because forging improves the grain flow and reduces the internal defects. Cast discs may be acceptable for lower-duty uses, but forged discs are preferred for high-pressure, high-temperature and critical rotating or load-bearing uses.
For elevated-temperature or sour-service oil and gas uses, commonly chosen materials include alloy steels such as ASTM A182 F11, F22 and F91, as well as nickel-based alloys such as Inconel 625, Inconel 718 and Hastelloy grades, depending on pressure, temperature, corrosion medium and code requirements.
Yes. We provide Non-destructive testing reports for all the forged discs.
Lead time depends on the material grade, forging size, machining scope, inspection level and the quantity. Normal standard is 2 to 4 weeks for standard forged disc blanks while lead time is 4-8 weeks for large custom discs with full machining and testing.
Please send the required sizes, the material grade, the quantity, use, drawings, testing requirements, certificate levels and the destination. This can help the supplier confirm the forging feasibility, the process route and the inspection standard quickly and make the quotation in short time.
Global Delivery & Localization Support
With over 25 years of export experience, we have supplied high-quality forged steel products to more than 50 countries such as the United States, Germany, United Kingdom, Australia, Canada, Saudi Arabia, United Arab Emirates, Japan, South Korea, Brazil, South Africa. We provide below supports to our clients:
- Flexible delivery terms: FOB, CIF, EXW, DDP to meet your specific shipping requirements
- Professional export documents support, including commercial invoice, packing list, bill of lading, certificate of origin, and mill test certificates
- Customs clearance support for global markets, with accordance documentation for regional import requirements
- English-speaking sales and technical support team, available 24/7 to answer your questions and provide technical assistance
- After-sales support, including installation guidance, material technical support, and quality issue resolution
What to Send for a Fast and Accurate Forged Disc Quote
- Outside diameter, thickness, center hole or machining allowance
- Required material grade and use standard
- Piece weight, quantity and annual demand if available
- Final use or service conditions such as pressure, temperature and corrosion medium
- Heat treatment, machining, NDT and mechanical testing requirements
- Certificate needs such as EN 10204 3.1 or 3.2
- Drawing, sketch or reference sample if available
- Delivery term, destination country and required schedule
Providing these details helps reduce back-and-forth communication, improves manufacturability review and allows the supplier to recommend the right forging route, raw material and inspection plan.
Contact Us for Custom Forged Steel Discs Quotation
Jiangsu Liangyi Co., Limited is a leading China manufacturer and supplier of custom open die forged steel discs, forging disks, and pancake forgings, with over 25 years of industry experience, ISO 9001 certification, and global delivery capabilities. We are glad to provide the most competitive price and good quality forged steel discs for your industrial projects. Welcome to send your custom drawing, material requirement, quantity, and use details for a detailed, no-obligation quotation!
📧 Inquiry Email: [email protected]
📞 Phone/WhatsApp: +86-13585067993
🌐 Website: https://www.jnmtforgedparts.com
📍 Address: Chengchang Industry Park, Jiangyin City, Jiangsu Province, China
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