Premium Square Steel Billet
High-quality square billets engineered for superior performance in steel processing and manufacturing. Jiyuan Iron & Steel delivers consistent quality and reliable supply for global industrial applications with sizes ranging from 150×150mm to 400×500mm.
Our square billets serve as the essential raw material for producing high-quality steel sections, structural components, and specialized steel products across various industries worldwide.
Square Steel Billet Manufacturer in China
Our steelmaking system is equipped with one 1300-ton hot metal mixer, one 120-ton dual-station KR desulfurization unit, two 120-ton top-bottom combined blowing converters, two 60-ton top-bottom combined blowing converters, four 120-ton LF refining furnaces, two 120-ton RH refining furnaces, four 60-ton LF refining furnaces, two alloy melting furnaces, and two 60-ton VD refining furnaces. The facility also features the world’s largest curved radius continuous caster for special steel large round billets (Φ500mm-Φ1300mm), along with continuous casters for alloy steel small square/round billets and large square/round billets (the latter introduced from Swiss Concast). The casting complex includes one 8-strand, one 7-strand, one 6-strand, and one 5-strand continuous casting machine. The integrated system possesses an annual production capacity of 5 million tons of steel.
Square Steel Billet Technical Specifications
Comprehensive range of square billet grades and sizes to meet your specific steel processing requirements. All our billets are produced with strict quality control and comprehensive testing protocols.
| Category | Typical Grades | Billet Size (mm) | Standard |
| Carbon Structural Steel | Q195, Q215 | 150×150、 180×180、240×240 、400×500、 ⌀600-1300 | GB/T700-2006 |
| Q235, Q275 | |||
| Low Alloy High Strength Structural Steel | Q355, Q390 | GB/T1591-2018 | |
| Q420, Q460 | |||
| Q355NE, LF2 | Technical Agreement | ||
| Quality Carbon Structural Steel | 20, 35, 45 | GB/T699-2015 | |
| 20Mn, 25Mn, 50Mn, 65Mn | |||
| Alloy Structural Steel | 20Mn2, 40Mn2 | GB/T3077-2015 | |
| 27SiMn, 37Mn5 | |||
| 40B, 45B | |||
| 20CrMoA-42CrMoA, 42CrMoA, 35CrMoV, 20CrMnMo, AlSi3130, 18CrNiMo7-6 | |||
| 20Cr, 40Cr | |||
| 20CrMnTi, 30CrMnTi, 20MnTiB | |||
| Steel for Crawler Board | 1E Series, 25MnB, 25CrMnB, 27CrMnB | 150×150/180×180 | Technical Agreement |
| Steel for Hot Rolled Plain Bars for Reinforced Concrete | HPB300 | 150×150 | GB/T1499.1-2017 |
| Steel for Hot Rolled Ribbed Bars for Reinforced Concrete | HRB400(E), HRB500(E) | GB/T1499.2-2018 |
Quality Assurance & Testing
Our comprehensive quality management system ensures every round billet meets the highest standards of quality and performance.
Chemical Analysis
Advanced spectrometers perform precise chemical analysis of every heat, a critical step in producing high-grade special steel. This ensures that the final composition of carbon, manganese, silicon, sulfur, phosphorus, and all alloying elements is meticulously verified, guaranteeing that the resulting round billets meet the stringent specifications required for their demanding applications.
Ultrasonic Testing
Advanced ultrasonic testing (UT) systems are employed to meticulously inspect the internal integrity of our special steel round billets. These systems reliably detect defects such as pipe, porosity, and inclusions, ensuring the material meets strict acceptance standards for structural integrity in critical applications.
Advanced Manufacturing Process of Square Billets
Our state-of-the-art manufacturing process ensures consistent quality in every Square billet we produce, from raw material selection to final inspection.
Raw Material Selection & Preparation
Carefully selected iron ore and premium scrap metal with precise chemical composition control. Raw materials undergo rigorous inspection and preparation to ensure optimal quality inputs for the steelmaking process.
Advanced scrap management systems categorize and prepare materials to achieve target chemistry with minimal residual elements that could affect final product quality.
Steel Making & Refining
Advanced electric arc furnace technology combined with ladle furnace refining for precise metallurgical control. Secondary refining processes including vacuum degassing ensure low gas content and clean steel.
Precise temperature control and alloy addition systems guarantee consistent chemical composition meeting the strictest international standards for square billets.
Continuous Casting
State-of-the-art continuous casting machines with electromagnetic stirring for uniform billet structure. Advanced mold technology and controlled secondary cooling ensure optimal solidification with minimal defects.
Automated casting parameter control maintains consistent quality across all production runs, resulting in billets with excellent surface quality and internal soundness.
Industrial Applications of Square Billets
Steel Bars Production
Primary raw material for manufacturing I-beams, H-beams, channels, and angles through hot rolling processes. Our consistent billet quality ensures predictable rolling behavior and excellent mechanical properties in finished sections. Ideal for producing structural components for construction, infrastructure, and industrial applications with stringent quality requirements.
Forging Industry
Ideal starting material for closed-die and open-die forging of automotive and machinery components. Our billets' uniform structure and consistent chemistry ensure predictable forging behavior and excellent mechanical properties in finished parts. Widely used for gears, shafts, flanges, and other critical components in automotive, aerospace, and heavy machinery applications.
Construction Rebar
Essential feedstock for producing reinforcing bars used in concrete construction. The consistent quality of our billets ensures trouble-free rolling and excellent mechanical properties in finished rebars. Used for manufacturing both plain and ribbed reinforcing bars for construction projects with demanding quality requirements.
Special Profiles
Carefully selected iron ore and premium scrap metal with precise chemical composition control. Raw materials undergo rigorous inspection and preparation to ensure optimal quality inputs for the steelmaking process. Advanced scrap management systems categorize and prepare materials to achieve target chemistry with minimal residual elements that could affect final product quality.
About Jiyuan Iron & Steel Group
With over three decades of expertise in steel production, Jiyuan Iron & Steel Group has established itself as a leading manufacturer of high-quality steel billets for global industrial markets. Our commitment to excellence and innovation has made us a trusted supplier of round billets, square billets, and specialized steel products to clients in over 40 countries worldwide.
As a premier steel manufacturer in China’s Henan province, we specialize in round billets while offering a comprehensive range of steel products for specialized applications. Our state-of-the-art facilities include advanced electric arc furnaces, ladle refining stations, and continuous casting machines capable of producing over 2 million tons of high-quality billets annually.
Jiyuan Iron & Steel Group provides flexible manufacturing solutions including custom sizes, special chemical compositions, and comprehensive technical support for all our billet products. Our rigorous quality management system, certified to ISO 9001:2015 standards, ensures that every billet meets international standards and customer specifications for chemical composition, dimensional accuracy, and mechanical properties.
We serve clients in steel processing, forging, tube manufacturing, and wire drawing industries worldwide, building long-term partnerships through reliable supply, consistent quality, and exceptional customer service. Our technical team works closely with clients to develop customized solutions for specific applications and processing requirements.
Ready to Source Premium Square Steel Billets?
Contact CHINASPECSTEEL™ today for competitive pricing, detailed technical specifications, and delivery options tailored to your steel processing requirements. Our technical team is ready to assist with material selection and provide comprehensive support for your specific applications.
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