Powering Industry with 5 Million Tons Annual Capacity
The special steel produced by Henan Jiyuan Iron and Steel Group is sourced directly from top-tier production bases in China, including high-quality bearing steel, alloy round bars, and steel billets.
- ISO 9001:2015
- IATF 16949
- OHSAS 18001
Mill Production Status
Excellent production experience
More than 70 years of experience in producing special steel
our company’s main steel production line adopts long-process production technology,with excellent iron，steel，materials，and testing equipment.
1958
Established
8000
Employees (Person)
3000+
Technical Personnel
5 million
Production Capacity（tons）
About Us
Your Trusted Special Steel Manufacturer
China's special steel production base
Henan Jiyuan Iron & Steel (Group) Co., Ltd., established in 1958, is a large key iron and steel enterprise in China. The company’s main steel production process is a long-process route, equipped with advanced ironmaking, steelmaking, rolling, and testing facilities. Its technology is state-of-the-art, meeting international advanced standards, and it serves as a production base for special steel bars and wire rods. The product range includes special steel bars, wire rods, construction steels, and precision-processed steel products, with special steels accounting for 90% of the total. Key special steel products comprise: bearing steel, spring steel, tire cord steel, cold heading steel, gear steel, free-cutting steel, non-quenched and tempered steel, alloy structural steel, carbon structural steel, high-strength wear-resistant steel, tube blank steel, anchor chain steel, and horizontally continuous cast iron profiles.
- Steel Square Bar
- Carbon Steel Square Bar
- Alloy Steel Square Bar
- Bearing Steel Square Bar
- steel billet
- Round Billet
- Square Billet
- Bright Steel Bar
Product Category
One-stop Special Steel Procurement
Round Bar
We specialize in manufacturing and supplying high-quality special steels, including carbon steel bars, alloy steel bars, and bright steel materials.
Square Bar
Our core business is producing and selling high-quality special steels, such as carbon and alloy square steel.
steel billet
Steel billet is a semi-finished steel product, primarily supplied in two cross-sectional shapes: round billet and square billet.
Bright Steel Bar
Bright Steel Bar is a cold-finished product known for its smooth surface, precise dimensions, and enhanced mechanical properties.
Special Steel Grade Equivalent & Application Chart
We adhere to GB, ASTM, DIN, and JIS standards. Below are our most popular export grades.
| Category | GB (China) | ASTM/SAE (USA) | DIN/EN (Europe) | Typical Application |
| Bearing Steel | GCr15 | 52100 | 100Cr6 (1.3505) | Bearings, rollers, sleeves |
| Alloy Steel | 42CrMoA | 4140 | 42CrMo4 (1.7225) | High stress axles, bolts |
| Alloy Steel | 40CrNiMoA | 4340 | 34CrNiMo6 (1.6582) | Aircraft landing gear |
| Spring Steel | 60Si2Mn | 9260 | 60SiCr7 | Leaf springs, coil springs |
| Carbon Steel | 45# | 1045 | C45 (1.0503) | General machining parts |
* Need a specific chemical composition report? Request MTC now.
From Molten Iron to Finished Bar
World-Class Testing Center
Our laboratory is CNAS accredited. Every batch of steel is strictly tested before leaving the Jiyuan plant. We ensure zero internal defects for critical applications like bearing rings and automotive gears.
Precise control of C, Mn, Cr, Mo, Ni contents.
According to SEP 1921 Class C/c, D/d or ASTM A388.
Grain size and inclusion rating (Non-metallic inclusions).
Custom special steel manufacturing for various industries
We specialize in custom special steel manufacturing, tailoring the chemical composition, properties, and dimensions to meet the precise specifications of our clients. Our engineered steels serve a wide spectrum of industries, including automotive, aerospace, machinery, and oil & gas. From melting and forging to precise heat treatment, we ensure every bar delivers consistent performance and reliability for your most demanding applications.
Automotive Industry
Special steel is heavily used in the automotive industry for critical components like engines, transmissions, and chassis to ensure strength and safety.
Machinery Manufacturing
Used to produce various mechanical parts, including bearings, molds, cutting tools, and high-strength fasteners. These applications require high wear resistance and hardness.
Aerospace
The aerospace industry relies on special steel for manufacturing aircraft engine components, landing gear, and structural parts that must withstand extreme temperatures and pressures.
Railway
High-strength and wear-resistant steel is essential for manufacturing rails, train wheels, and key components for shipbuilding, ensuring longevity and safety in demanding environments.
Our Service
The Standard in Special Steel Services
Tech Support
Our dedicated team provides expert technical assistance for special steel selection, application optimization, and problem-solving, ensuring optimal performance.
Order Production
We manage your special steel order from confirmation to delivery, ensuring precision and on-time fulfillment according to your specifications.
Processing Service
We provide precision machining services for special steel, including cutting, forging, and heat treatment, backed by rigorous quality control.
Inspection Services
Our comprehensive inspection services cover your special steel from raw material to finished product, ensuring strict adherence to all quality standards and specifications.
Partners
Our special steel Partners
Our special steel partners form a global network dedicated to excellence and innovation.
Application Industry
Applications of Special Steel in Various Industries
Aerospace
Wind turbines
Motor vehicles
Rail Tracks and Trains
Vessel Industry
Machinery
Construction
Energy Sector
About special steel
We Are Leading International Company In The World
Specialty Steel Product Line
Range of Specialty Steel Products
Jiyuan Steel’s product range encompasses a comprehensive selection of round and square bars, including carbon steel, alloy steel, and bearing steel grades, alongside round and square billets and bright steel bars.
Order Production
Our manufacturing facilities feature versatile production lines equipped with advanced technology, enabling us to meet diverse customer requirements for customized specifications, batch quantities, and stringent quality standards across various special steel products.
- Sustainablility
- Project On Time
- Modern Technology
- Latest Designs
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Building the world with high quality specialty steel
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Frequently Asked Questions
Special steel, also known as specialty steel or alloy steel, refers to a category of steels engineered with precise chemical compositions and superior properties to meet specific performance demands that standard carbon steels cannot fulfill. This is achieved through precise control of manufacturing processes and the addition of elements like chromium, nickel, molybdenum, and vanadium.
The primary difference lies in composition and performance. Carbon steel’s properties are defined mainly by its carbon content, making it strong but less versatile. Special steel incorporates alloying elements (like Cr, Ni, Mo) and undergoes controlled processing to achieve targeted properties such as high corrosion resistance, extreme strength, toughness, or wear resistance for specific, demanding applications.
Selecting the right special steel depends on your application’s key requirements. Consider these factors:
Required Strength & Hardness: For structural or high-stress parts.
Corrosion Resistance: For environments exposed to moisture or chemicals.
Wear Resistance: For components subject to friction and abrasion.
Temperature Resistance: For high-temperature or cryogenic service.
Consulting with a technical specialist is recommended to match your needs with the optimal steel grade.
Heat treatment is a controlled process of heating and cooling that unlocks the full potential of special steel.
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