Special Steel Bars
High-quality carbon steel, alloy steel, bearing steel and other special steel bars with complete specifications and guaranteed quality,Jiyuan Iron & Steel delivers consistent quality and reliable supply for global industrial applications.
Our special steel bars serve critical components in automotive, machinery, energy, and construction industries worldwide.
Special Steel Bars Manufacturer in China
Special Steel Bars represent the pinnacle of metallurgical engineering, offering superior mechanical properties that outperform conventional steels through precise chemical composition control and advanced manufacturing processes. These high-performance materials deliver exceptional strength, toughness, and fatigue resistance, ensuring reliable performance under demanding conditions. Their excellent processing characteristics enable optimal response to heat treatment and facilitate superior machinability for complex component manufacturing. Special Steel Bars provide critical functional advantages including outstanding wear resistance, high-temperature stability, and corrosion resistance tailored to specific application requirements. Serving as essential materials across automotive, machinery manufacturing, energy, aerospace, and tooling industries, they form the foundation for transmission systems, engine components, bearing applications, wind power equipment, and precision tools. The inherent reliability and consistency of Special Steel Bars translate into extended component lifespan, reduced maintenance costs, and enhanced operational efficiency, while their design flexibility and recyclability support both innovative engineering solutions and sustainable manufacturing practices in the global industrial landscape.
Special Steel Bars Categories
We specialize in the production and sales of high-quality special steels such as carbon steel bars, alloy steel bars, and bright steel materials.
| Category | Typical Grades | Size (mm) | Standard |
| Carbon Structural Steel | Q195, Q215, Q235, Q275 | ø12-300 | GB/T 699 GB/T 700 GB/T 1222 GB/T 5216 GB/T 18731 GB/T 26075 GB/T 1591 GB/T 3077 Japanese Standard German Standard |
| Low Alloy High Strength Structural Steel | Q355, Q390, Q420, Q460, St52-3, S355Jo | ø12-300 | |
| Quality Carbon Structural Steel | 10-55, 20Mn-65Mn, CB5, C35, C45, S25C-S55C, S45CB, S45SC | ø12-300 | |
| Alloy Structural Steel | 20Mn2-50Mn2, 27SiMn-42SiMn, 40B-50B, 25MnB-45MnB, 20MnMoB, 15MnVB-40MnVB, 15CrMn-40CrMn, 20MnTiB, 20Cr-50Cr, 20CrNi-50CrNi, 20CrMoA-42CrMoA, 12Cr1MoV, 40CrV, 30CrMnSi, 35CrMnSi, 20CrMnMo, 40CrMnMo, 20CrMnTi, 30CrMnTi, 15CrNiMo-40CrNiMo | ø12-300 | |
| 16MnCr5, 20MnCr5, 30Mn5, 41Cr4, 37Cr54, 42CrMo4, 25MnCrNiMoA, 23MnNiMoCr54, SAE1043, 1E Series, SMn443H, 15B36CrI | |||
| Guaranteed Hardenability Structural Steel | 45H, 15CrII-45CrII, 15CrMoII-42CrMoII, 22CrMoII, 20CrMnTiIII-II5, 20CrMnMoII, 40MnBH, 45MnBH, 20MnVBH | ø12-260 | |
| 16MnCr5H, 20MnCr5H, 8620H, SCM420H, 17CrNiMo6, 18CrNiMo7-6 | |||
| Steel for Petroleum Applications | 20CrMoA-42CrMoA, 3130, 4138, 4138M, 4140, 4142, 4330, SAE4137H, AISI4145H, AISI4130, 37CrMnMo | ø12-250 | |
| Bearing Steel | GCr15, GCr15SiMn, SAE52100, SUJ2, 100Cr6, GCr15-K2, LYHB55, S53C, S55C, SAE1055, G65Mn, 42CrMo4, SAE4320, 100CrMnMoSi8-4-6, 100CrMo7-3 | ø12-120 | |
| Free-Cutting Steel | 1215, GT1215S, 11SMn30, 11SMn37, SAE1144, SAE1141, Y08-45, S45CL, 45S | ø12-90 | |
| Non-Demoulding Mechanical Structural Steel | C7056BY, 46MnVS5, 1E1497, 30MnVS6, 38MnVS6, 49MnVS3, F45MnVS, F40MnVS, F45VS, 20MnV6, HY4520, SY740, JGF45V, HL610, HL740, 25Mn2CrVS | ø12-300 | |
| Spring Steel | 65Mn, 60Si2Mn, 60Si2Cr, 55SiCr, 55Cr3, 50CrV, 51CrV4, 60Si2CrVAT | ø12-120 | |
| Wear-Resistant Steel Ball Steel | B2, B3, B2B, HM20620, HM20421, HM21430, HM21530, GN-3A-1, GN-3A-2, GN-2A, GN-2A-1 | ø12-180 |
Introduction to Special Steel Production Line
Overall Process Design
The overall process of our special steel large bar production line was designed by Danieli of Italy, incorporating world-class engineering expertise and advanced manufacturing concepts to ensure optimal production efficiency and product quality.
Key Equipment & Control Systems
Key core equipment and some control systems were imported from leading international suppliers including Stein Heurtey (France), Danieli (Italy), L-TEC (USA), Kocks (Germany), and Böhler (Austria). The comprehensive equipment package includes heating furnace, blooming mill, billet flame scarfing machine, continuous rolling mill, flying shear, Kocks reducing and sizing mill, combination saw, and grinding wheel saw.
Advanced Technologies & Processes
The production line incorporates multiple advanced technologies including online diameter measurement, non-destructive testing, controlled rolling and cooling, online flame cleaning, and hot charging and direct rolling. For the size range of ø50mm to ø160mm, it features a German KOCKS reducing and sizing mill that enables free-size rolling capability.
Product Specifications & Applications
Our product range includes round steel (ø50mm to ø300mm), square steel (100mm×100mm to 180mm×180mm), and billets for rolling (150mm×150mm to 360mm×360mm). We focus on producing special steels including bearing steel, gear steel, spring steel, alloy structural steel, quality carbon structural steel, non-quenched and tempered steel, high-pressure boiler tube steel, and anchor chain steel, serving automotive, engineering machinery, petrochemicals, wind power generation, and railway industries.
Production Advantages & Quality Standards
The production line demonstrates exceptional flexibility and adaptability, delivering products with high dimensional accuracy, stable microstructure and properties, and superior sawing quality. The technical equipment, product quality, and automation level have all reached internationally advanced standards, ensuring consistent performance and reliability.
