1, high strengh structural steel 2, high hardness and toughness 3, high hardenability 4, good performance in machining Sichuan Liaofu Special Steel Trading Co., Ltd.alloy structural steelGB 30CrMnSi Dimensions: thickness:10mm~90mm; width: 60mm~610mm; length: 4~6m, or at the customers' requirements Sichuan Liaofu Special Steel Trading Co., Ltd.Alloy strctural steel1, Grade: GB 30CrMnSi2, Chemical ...