Use case · GPC
GPC carburizer for steelmaking carbon addition
Jiushun graphitized petroleum coke is used as a steelmaking carburizer / carbon additive. Published ZW grades cover fixed carbon from ≥98.0% to ≥99.0% with sulfur ≤0.05%. Confirm size (commonly 1–5 mm) and quantity on the enquiry.
Common particle size in overseas enquiries: 1–5 mm. Other listed sizes remain available on the order.
| Grade | F.C. min | S max | Ash max | V.M. max | Moisture max | N |
|---|---|---|---|---|---|---|
| ZW01 | ≥99.0% | ≤0.05% | ≤0.5% | ≤0.5% | ≤0.50% | 100 ppm |
| ZW02 | ≥98.5% | ≤0.05% | ≤0.6% | ≤0.9% | ≤0.50% | 200 ppm |
| ZW03 | ≥98.5% | ≤0.05% | ≤0.7% | ≤0.8% | ≤0.50% | 200 ppm |
| ZW04 | ≥98.0% | ≤0.05% | ≤1.0% | ≤1.0% | ≤0.50% | 300 ppm |
Source: factory specification sheet. Indicators and particle sizes can be customised to the purchase order.
Procurement questions
- Is this product a steelmaking carburizer?
- Yes — buyers also call it GPC, graphitized petroleum coke, carbon additive or recarburizer. Jiushun’s published grades are ZW01–ZW04.
- What fixed carbon range is listed?
- Jiushun GPC recarburizer / carbon raiser is produced from petroleum coke by high-temperature graphitization (~2,800 °C). Standard grades ZW01–ZW04 list fixed carbon from ≥98.0% to ≥99.0%, sulfur (sulphur) ≤0.05%, and nitrogen 100–300 ppm. Particle sizes include 0–2 mm, 1–5 mm (most requested), 3–5 mm and 5–8 mm; other sizes on request.
- Do you publish FOB prices for steel mills?
- No public prices. Send grade, size, MT and Incoterms; we quote per enquiry and reply the next business day (UTC+8).