Home / Standards / GB/T 24456-2009 GB/T 24456-2009 Active High-density polyethylene silicore plastic duct 高密度聚乙烯硅芯管 Standard Type GBT ICS 23.040.20;83.140.30 CCS G33 Status 现行 Issue Date 2009-10-15 Implementation 2010-03-01 Responsible Dept 中国轻工业联合会 Drafting Unit 中国轻工业联合会