GB/T 20887.7-2017汽车用高强度热连轧钢板及钢带第7部分:液压成形用钢国家标准
英文:Continuously hot rolled high strength steel sheet and strip for automobile—Part 7:Steels for hydraulic forming GB/T 2...
英文:Continuously hot rolled high strength steel sheet and strip for automobile—Part 7:Steels for hydraulic forming GB/T 2...