Home / Standards / GB/T 7926-1987 GB/T 7926-1987 Abolished Accuracy of wire cut electric discharge machines 电火花线切割机精度 Standard Type GBT ICS 25.120.10 CCS J59 Status 废止 Issue Date 1987-06-11 Implementation 1988-01-01 Responsible Dept N/A Drafting Unit N/A