BIMobject 类别暖通空调 - 管路
IFC 分类风管管件
ETIM 代码EG015540
ETIM 名称Fittings, flanges and connectors
Uniclass 2015 代码Pr_65_65_25
Uniclass 2015 说明Ductwork and fittings
CSI MasterFormat 2014 代码23 31 13.19
CSI MasterFormat 2014 标题Metal Duct Fittings
OmniClass 编号23-33 49 00
OmniClass 标题HVAC Ductwork