Forged Steel Shafts | Professional Forging Shafts Manufacturer In China

About Our Forged Steel Shafts

Jiangsu Liangyi Co., Limited is a professional ISO 9001:2015 certified manufacturer of forged steel shafts in China.

With over 25 years of industry experience since 1997. We mainly produce custom forged steel shafts that meet international standards and client drawings as well as high-performance open die forgings for global industrial uses.

Our forged shafts are widely known for good durability, strict quality control, and full material traceability from steel ingot to finished product — with a Mill Test Certificate (MTC) 3.1/3.2 for each order.

We have a 6,000-ton hydraulic forging press and employ professional melting experts(EAF+LF+VD and VIM+ESR) to get great internal integrity and mechanical performance for the most strict uses.

Different Forging Steel Shafts We Supply

Our forged steel shafts can be manufactured in a wide range of custom shapes to meet different industrial needs.

Below are the main shafts we make:

• Forged Gear Shafts — for gearboxes, wind turbines, and heavy machinery
• Stepped Shafts — multi-diameter shafts to exact client drawings
• Rotor Shafts — for generators, turbines, and electric motors
• Fan Shafts — for industrial fans and blower systems
• Flanged Shafts — with integral forged flanges for coupling uses
• Pinion Shafts — for gear drives, mills, and rolling equipment
• Hollow Shafts — weight-optimized shafts for rotating equipment
• Square & Eccentric Shafts — for special power transmission uses
• Roller Shafts & Mandrel Shafts — for rolling mills, pelletizing and compacting equipment
• Pump Shafts — for centrifugal pumps, downhole pumps, and process pumps
• Sugar Mill Shafts — heavy-duty shafts for the sugarcane processing industry
• Turbine Generator Shafts — for thermal, hydro, and nuclear power plants
• Wind Turbine Shafts — main shafts and rotor shafts for onshore and offshore wind
• Marine Propeller Shafts — corrosion-resistant shafts for ships and offshore platforms

Technical Data of Our Forged Steel Shafts

We manufacture forged steel shafts with industry-leading technique using our advanced forging equipment, including a 6000-ton hydraulic forging press:

Wide Uses of Our Forged Shafts In Global Industries

Industries Served

Our forging steel shafts are widely used in different industries: oil and gas exploration and production, machinery manufacturing, gear production, aerospace and aviation, energy and power generation (thermal, hydro, nuclear), defense, automotive, heavy industry, general metalworking, petroleum and chemical processing, mining and mineral extraction, engine and turbine manufacturing, shipbuilding and marine, construction, fabricated metal products, pulp and paper, food processing, electric motor manufacturing, pelletizing and compacting, cement production, and railways.

Global Cases

Oil & Gas — Middle East

We have supplied high-strength alloy steel forged shafts for wellhead equipment and downhole tools to major oil and gas projects in the Middle East. Our forged pump shafts and mandrel shafts have good corrosion resistance and tensile strength even in high-pressure and high-temperature (HPHT) downhole environments. They are manufactured per API 6A standards and they have a service life 30% longer than industry-standard alternatives.

Wind Power — Asia & Europe

Our wind turbine forged shafts are widely used in onshore and offshore wind farms in Asia and Europe. We produce 15-metre-long rotor shafts with a maximum diameter of 1800 mm, manufactured from high-strength alloy steel with strict grain size control (ASTM E112 Grade 5 or finer) to get good fatigue resistance and stable performance under extreme wind loads with over 20 years of service life.

Marine & Shipbuilding — Europe & Southeast Asia

We have delivered forged marine propeller shafts and turbocharger shafts to international shipbuilding companies in Europe and Southeast Asia. Our forged ship shafts, made from corrosion-resistant stainless steel and nickel alloys, are accordance with marine society standards. They can work well in the hard water environments for commercial vessels, offshore platforms, and naval ships.

Power Generation — Asia

Our turbine generator forged shafts are main parts for thermal power, hydroelectric, and nuclear power plants across Asia. The heavy-duty rotor shafts we produce can weigh up to 30 tons, with full set of traceable material from steel melting to final machining. We will do strict ultrasonic testing (per ASTM A388) and inspection of the mechanical properties on the shafts to make sure they can work stably under continuous high-temperature and high-speed working conditions.

Mining — Australia & South America

We supply heavy-duty forged roller shafts and mill shafts to large mining companies in Australia and South America. Our forged mining is made of wear-resistant alloy steel which can withstand the heavy impact and abrasive conditions in pelletizing, compacting and cement production equipment, thereby reducing the frequency of maintenance and increasing the service life of the equipment.

Aerospace & Defense — Europe

Our forged shafts, manufactured per AMS and military standards, are supplied to European aerospace and defense contractors. We produce gear shafts and pinion shafts with good nickel alloys and ultra-high-strength alloy steels, with small size tolerances and strict control of non-metallic inclusion (per ASTM E45). They can meet the requirements of aerospace and defense industries.

Why do You Choose Jiangsu Liangyi for Your Forged Steel Shafts?

Our forged steel shafts can work well in the strictest industrial environments.

Main advantages of our shafts are as follows, but not limited to:

• ✔ Good Durability — long service life under continuous heavy-duty industrial conditions
• ✔ High Tensile Strength — great load-bearing capacity and fatigue resistance
• ✔ Full Material Traceability — from steel ingot to finished product with MTC 3.1/3.2
• ✔ Corrosion Resistance — in stainless steel and nickel alloys for hard environments
• ✔ Abrasion Resistance — wear-resistant alloy steel grades for heavy-duty uses
• ✔ ISO 9001:2015 Certified — strict quality management system during production
• ✔ International Standards Accordance — ASTM, DIN, EN, JIS, API, AMS on each order
• ✔ Custom Manufacturing — full capability per client drawings, DXF, DWG, PDF, STEP
• ✔ 100% Ultrasonic Testing — every piece tested per ASTM A388 / SEP 1921 before shipment
• ✔ 25+ Years of Experience — serving 50+ countries since 1997
• ✔ 24-Hour RFQ Response — quick responses on technical and commercial on business days

Production & Quality Control for Forging Shafts

We have a strict end-to-end 11-step production and quality control system for every forged steel shaft, thus they can be accordance with international standards and clients’ requirements:

1. Steel Ingot Casting — Good steel ingot via EAF+LF+VD or VIM+ESR melting for highest purity and cleanliness
2. Forging Step — 6000-ton hydraulic forging press for good grain flow and material density
3. Primary Heat Treatment — Normalizing, or solution treatment for stainless steel and nickel alloy grades, to refine grain structure
4. Rough Machining — To pre-defined sizes in preparation for heat treatment
5. Secondary Heat Treatment — Hardening and tempering (QT), or age hardening for stainless steel and nickel alloy grades
6. Mechanical Properties Testing — Tensile, yield, impact, and hardness testing against international standards
7. Semi-Finishing Machining — Gradually closer to final tolerances
8. Finish Machining — Precision CNC machining with small size tolerances per clients’ drawing
9. Drilling & Tapping — All secondary operations per clients’ requirements
10. NDT & Size Inspection — 100% ultrasonic testing (ASTM A388 / SEP 1921) and size check with MTC 3.1/3.2
11. Anti-Corrosion & Export Packaging — VCI preservation and secure packaging for safe international delivery

Advanced Melting & Quality Control Standards

Steel melting methods include EAF+LF+VD (Electric Arc Furnace + Ladle Refining + Vacuum Degassing) or VIM+ESR (Vacuum Induction Melting + Electroslag Remelting), chosen based on clients' specific technical manuals.

100% ultrasonic testing is made per SEP 1921 Group III C/c, D/d, E/e and ASTM A388.

Grain size meets ASTM E112-96 Grade 5 or finer.

Non-metallic inclusions are accordance with ASTM E45, A/B/C/D series ≤ 1.0 (heavy) and ≤ 1.5 (thin), or as per clients’ requirement.

Material Grades for Our Forged Steel Shafts

We supply forged steel shafts in a full range of material grades, accordance with ASTM, AMS, AISI, DIN, EN, JIS, and API.

Our full material range includes:

Carbon & Alloy Steel Forged Shafts

Japan (JIS): SCM415, SCM420, SCM440, SNCM439, SNCM220, SACM645
USA (AISI / ASTM / AMS): SAE 4140, SAE 4130, AISI 4135, SAE 9840, SAE 4340, AISI 4145H, AISI 8622H, AISI 9310, AISI 4330V, AISI 4330V Mod, AISI 4320, SAE 4150, AISI 4317, AMS 6418, SAE 8620, AISI 8630, ASTM A668/A668M, ASME SA336/SA182, ASTM A471, SA-350 LF series
Europe (DIN / EN): 42CrMo4, 25CrMo4, 34CrNiMo6, 17CrNiMo6-4, 20NiCrMo22, 34CrMo4, 30CrNiMo8, 36CrNiMo4, 41CrAlMo7, 18CrNiMo7-6, 16MnCr5, St52-3, S355J2G3, 50CrMo4, 39NiCrMo3, EN24, EN8, EN9, EN19, and a full range of DIN/EN standard grades

Stainless Steel Forged Shafts

Austenitic: A182-F304, A182-F304L, A182-F310, A182-F316, A182-F316L, A182-F321, A182-F347, AISI 309, AISI 310S
Martensitic & Precipitation Hardening: A182-F6a, A182-F6b, 17-4PH (UNS S17400), 15-5PH, 17-7PH, PH13-8Mo
Duplex & Super Duplex: A182-F51 (2205), A182-F53 (2507), A182-F55, A182-F60
Super Austenitic: 904L, 254SMO (S31254), 654SMO (S32654), Alloy 20, Nitronic series

Nickel Alloy & Super Alloy Forged Shafts

Nickel & Monel: Nickel 200, Nickel 201, Monel 400 (N04400), Monel K-500 (N05500)
Hastelloy: Hastelloy C-276 (N10276), Hastelloy C-22 (N06022), Hastelloy X (N06002), Hastelloy B-2 (N10665), Hastelloy C-2000
Inconel: Inconel 600 (N06600), Inconel 601 (N06601), Inconel 625 (N06625), Inconel 718 (N07718), Inconel X-750 (N07750)
Incoloy: Incoloy 800 (N08800), Incoloy 800H (N08810), Incoloy 800HT (N08811), Incoloy 825 (N08825)
Nimonic: Nimonic 75, Nimonic 80A, Nimonic 90, Nimonic 105

Tool & Die Steel Forged Shafts

Hot & Cold Work: AISI A2, AISI D2, AISI O1, AISI S7, H13 (1.2344), H11 (1.2343), H12
Plastic Mould Steel: P20 (1.2311), P20+Ni (1.2738), NAK80, S136 (1.2083)
JIS & DIN Grades: SKD11 (1.2379), SKD61 (1.2344), SKT4, DC53, 1.2080