QB 1540-1992
钟用黄铜线
1992-07-06
QB/T 1540-2020
钟用黄铜线
Brass wire stocks for clocks
2020-08-31
QB 1542-1992
钟用铅黄铜棒与线
1992-07-06
YS/T 1099-2016
气门芯杆用黄铜线
Brass wire for valve code stem
2016-04-05
GB/T 37501-2019
数控机床用单向走丝电火花加工用黄铜线
Brass wires for unidirectional travelling wire electrical-discharge machining in numerically controlled machines
2019-06-04