1: Delivery condition: Hot rolled or forging, EAF or ESR material, black or machined surface, annealing, hardness: HBS=207~255 2: Specification: Thinckness: 20~30mm, Width: 205~610mm, Round bar size: 60~300mm, Length: 2000~5800mm 3. Material character: Have high quenching, at the 300~400 degree...