Carbon Steel Billet — Factory Direct Supplier | Huaxia-Steel
Huaxia-Steel supplies carbon steel billets for re-rolling, forging, and continuous casting downstream. Our billets are produced by top-tier Chinese continuous casting plants and are available in square, rectangular, and round cross-sections. Whether you need low-carbon grades for wire rod and rebar, medium-carbon grades for bars and shafts, or high-carbon grades for spring steel and tool steel feedstock, we can source the right chemistry, dimension, and certification for your rolling mill or forge shop.
Product Overview
Carbon steel billet is a semi-finished casting product used as the starting material for rolling mills and forges. Compared to ingots, continuous-cast billets have a more uniform structure, fewer inclusions, and better yield. They are typically cropped to length and then reheated for rolling into bars, rods, sections, or tubes, or for forging into crankshafts, rings, and gears.
Specifications
| Parameter | Range |
|---|---|
| Cross-section | Square 100×100 mm to 200×200 mm; rectangular 120×180 mm to 150×220 mm; round φ120–φ250 mm |
| Length | 6 m, 9 m, 12 m, or cut to order |
| Carbon steel grades | Q235, 20MnSi, 3SP, 4SP, 5SP, SAE 1020, SAE 1045, S55C, 60Si2Mn |
| Casting method | Continuous casting (CCM), electric arc furnace or basic oxygen furnace |
| Tolerance | ±2% side length; corner radius per mill practice or GB/T 702 |
| Straightness | ≤6 mm/m, total ≤0.6% of length |
| Surface | As-cast, scarfed, or peeled |
Available Steel Grades
- Q235 / 3SP / 4SP: General structural billets for rebar, angle, channel, and flat bar rolling.
- 20MnSi: Deformed bar grade with added manganese and silicon, widely used for construction rebar.
- SAE 1020 / 1045: Medium-carbon billets for machined bars, shafts, and forged components.
- S55C / SAE 1055: Higher carbon for stronger forgings and wear-resistant parts.
- 60Si2Mn: Spring steel billet feedstock for flat and leaf springs.
Manufacturing Standards
Carbon steel billets are referenced under GB/T 699 for quality carbon structural steels, GB/T 700 for carbon structural steels, GB/T 1591 for high-strength low-alloy steels, ASTM A29 for general requirements for carbon and alloy bars, and JIS G 4051 for machinery structural carbon steels. We supply billets with MTC according to the grade and standard named in your contract.
Applications
- Rebar and wire rod rolling mills
- Merchant bar and structural section production
- Open-die and closed-die forgings
- Automotive crankshafts, connecting rods, and gears
- Spring steel rolling and coiling
- Tube and pipe piercing feedstock
Quality Assurance
Each heat is controlled by ladle analysis, and billets are visually inspected for cracks, scabs, and inclusions. Optional checks include ultrasonic testing for internal soundness, macroetch testing for segregation, and dimensional sampling. MTCs are issued under EN 10204 3.1 and include heat number, chemical analysis, casting method, and dimensional results.
Packing and Shipping
Billets are loaded loose or bundled with steel strapping depending on the size and destination. Corner protectors and anti-corrosion oil can be applied for long sea voyages. We provide bundle tags with heat number, grade, dimensions, and weight, plus loading photos and packing lists for every container.
Sourcing carbon steel billets for your rolling mill or forge? Send Huaxia-Steel the grade, size, and annual volume. We will quote continuous-cast billets with certified MTC and reliable delivery.
