GB/T 4697-2017

Active

Hot rolled steel section for mine timbering

矿山巷道支护用热轧型钢

Standard Type
GBT
ICS
77.140.70
CCS
H44
Status
现行
Issue Date
2017-07-12
Implementation
2018-04-01
Responsible Dept
中国钢铁工业协会
Drafting Unit
N/A