| 3. | Standard specification for steel , sheet , cold - rolled , carbon , structural , high - strength low - alloy , high - strength low - alloy with improved formability , solution hardened , and bake hardenable 冷轧碳钢结构钢高强度低合金钢和可成形性提高的高强度低合金钢固溶淬火和可烧固硬化薄板的标准规范 |