GB/T 6138-2023

Active

Subland twist drills for holes prior to tapping screw threads

攻丝前钻孔用阶梯麻花钻

Standard Type
GBT
ICS
25.100.30
CCS
J41
Status
现行
Issue Date
2023-09-07
Implementation
2024-04-01
Responsible Dept
中国机械工业联合会
Drafting Unit
N/A