BIMobject 类别暖通空调 - 管路
IFC 分类管道段
ETIM 代码EC000059
ETIM 名称Installation duct
Uniclass 2015 代码Pr_20_85_12
Uniclass 2015 说明Bunds and ducts
CSI MasterFormat 2014 代码23 31 00
CSI MasterFormat 2014 标题HVAC Ducts and Casings
OmniClass 编号23-33 49 00
OmniClass 标题HVAC Ductwork