Home / Standards / HG/T 21562-1994 HG/T 21562-1994 衬聚四氟乙烯钢管和管件 衬聚四氟乙烯钢管和管件 Standard Type HGT ICS 71.120 CCS G94 Status N/A Issue Date N/A Implementation N/A Responsible Dept 发布日期：1900-01-01 Drafting Unit N/A