GB/T 20887.1-2017汽车用高强度热连轧钢板及钢带第1部分:冷成形用高屈服强度钢国家标准
英文:Continuously hot rolled high strength steel sheet and strip for automobile—Part 1: High yield strength steel for cold...
英文:Continuously hot rolled high strength steel sheet and strip for automobile—Part 1: High yield strength steel for cold...