GB/T 20887.2-2022汽车用高强度热连轧钢板及钢带第2部分:高扩孔钢国家标准
英文:Continuously hot rolled high strength steel sheet and strip for automobile—Part 2: High hole expansion steel GB/T 208...
英文:Continuously hot rolled high strength steel sheet and strip for automobile—Part 2: High hole expansion steel GB/T 208...