Our Products
Premium 3SP & 5SP steel billets manufactured to GOST 380-2005
Chodanazar Steel specializes in the production of continuous-cast steel billets in two primary grades: 3SP and 5SP. Our billets serve as essential feedstock for rolling mills producing rebar, wire rod, structural sections, and various downstream steel products.
3SP Steel Billet (St3sp)
3SP (St3sp) is a semi-killed structural carbon steel, widely used as feedstock for the production of construction rebar, wire rod, angles, channels, and other structural shapes. Its balanced carbon and manganese content provides excellent weldability and formability.
Applications
- Construction rebar (ribbed and plain)
- Wire rod for nails, fencing, welding wire
- Structural angles and channels
- Flat bars and round bars
- General structural steelwork
5SP Steel Billet (St5sp)
5SP (St5sp) is a higher-carbon semi-killed structural steel with increased tensile strength compared to 3SP. It is specified for applications requiring superior load-bearing capacity, including heavy structural elements and industrial machinery parts.
Applications
- Heavy structural sections (H-beams, I-beams)
- Rail and rail components
- Industrial machinery parts
- High-strength rebar
- Structural plates and heavy bars
Grade Comparison
| Property | 3SP (St3sp) | 5SP (St5sp) |
|---|---|---|
| Carbon Content | 0.14–0.22% | 0.28–0.37% |
| Manganese Content | 0.40–0.65% | 0.50–0.80% |
| Tensile Strength | 380–490 MPa | 490–630 MPa |
| Yield Strength | ≥ 245 MPa | ≥ 285 MPa |
| Elongation | ≥ 25% | ≥ 20% |
| Primary Use | General construction, rebar | Heavy structural, rail |
| Weldability | Excellent | Good |
Standards & Packaging
Applicable Standards
- GOST 380-2005 (Carbon steel of ordinary quality)
- GOST 2591-2006 (Square hot-rolled steel)
- ISIRI (Institute of Standards and Industrial Research of Iran)
- EN / ASTM equivalents available upon request
Packaging & Delivery
- Billets bundled and strapped with steel bands
- Each bundle tagged with grade, heat number, and dimensions
- Delivery: Ex-works, FOB Bandar Abbas, CFR/CIF available
- Typical lead time: 7–14 days from order confirmation