Home / Standards / GB/T 324-1988 GB/T 324-1988 Abolished Welds-symbolic representation on drawings 焊缝符号表示法 Standard Type GBT ICS 25.160.40 CCS J04 Status 废止 Issue Date 1988-12-10 Implementation 1989-07-01 Responsible Dept 国家标准委 Drafting Unit N/A