Q235B Continuous Cast Carbon Steel Square Billet – General Structural Grade
Product Overview
Q235B carbon steel square billet is the most widely used primary steel feedstock for structural steel rolling and general metalworking. Manufactured by continuous casting of mild carbon steel into square cross-section, it delivers consistent chemical composition, uniform internal structure and reliable hot working performance. This general-purpose grade is the standard feedstock for rolling structural sections, wire rods and simple forged parts, and can also be used directly as structural members in construction.
Why Choose CNB Steel Billets?
We source steel billets directly from leading Chinese integrated steel mills with strict control over casting process and material quality. Every billet undergoes incoming inspection over chemical composition, dimensional accuracy and surface quality, with full material traceability from melt to finished billet. With large ready stock of standard sizes and custom cutting capabilities, we support both rolling mill feedstock and construction project requirements efficiently.
Key Specifications
| Item | Specification |
|---|---|
| Product Name | Q235B Continuous Cast Square Steel Billet |
| Steel Grade | Q235B / SS400 / ASTM A36 equivalent |
| Section Type | Square billet, continuous cast |
| Section Size Range | 100×100mm – 200×200mm |
| Standard Lengths | 6m, 9m, 12m, custom cut |
| Surface Condition | As-cast black skin, shot blasted option |
| Applicable Standards | GB/T 700, ASTM A36, JIS G3101 |
| Casting Process | Vertical continuous casting |
| Minimum Yield Strength | ≥235MPa |
Core Advantages
- Universal feedstock: Suitable for most structural steel rolling and forging applications.
- Consistent quality: Uniform chemistry and internal structure for stable rolling performance.
- Wide size range: Covers small to large section sizes for different product requirements.
- Full traceability: Complete material documentation from melt to finished billet.
- Cost effective: The most economical feedstock for general structural steel production.
Applications
This Q235B square billet is widely used as feedstock for rolling C/Z purlins, angle steel, channel steel, wire rods, small seamless pipes and general structural forged parts. It is also used directly as foundation piles and structural supports in construction projects.
Get a Quotation
We supply carbon steel billets in various sections, sizes and grades for rolling, forging and construction applications. Full material test certificates and third-party inspection are available upon request. Contact our steel feedstock team for a competitive quotation.
