Home / Standards / HG/T 20644-1998 HG/T 20644-1998 变力弹簧支吊架 变力弹簧支吊架 Standard Type HGT ICS 71.120 CCS G91 Status N/A Issue Date N/A Implementation N/A Responsible Dept 发布日期:1998-06-22 Drafting Unit N/A