Home / Standards / YB/T 4973-2022 YB/T 4973-2022 Active 叉车横梁用热轧型钢 Standard Type YB ICS N/A CCS N/A Status Active Issue Date 2022-09-30 Implementation 2023-04-01 Centralized Committee 工业和信息化部 Issuing Authority 工业和信息化部