Home / Standards / GB/T 15831-2023 GB/T 15831-2023 Active Steel tube scaffold coupler 钢管脚手架扣件 Standard Type GBT ICS 91.220 CCS P97 Status 现行 Issue Date 2023-05-23 Implementation 2023-12-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A