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 / 4 sides machined 5. Size: width 100-800mm; thickness 80-800mm 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