1. Steel melting: EAF + LF + VD + ESR (optional for tool & die steel)
2. Produce process: Hot forged
3. Heat Treatment: Annealed / Normalized / Quenched+Tempered
4. Surface condition: Black surface / peeled / turned
5. Diameter: 100-1200mm
6. Length: 2000-5800mm (for 20" container loading), or according to customer's requirement.
7. UT test: according to SEP1921-84 G3 C/c, D/d, or finer