DIN 21615-1990 标准详情
- 标准号:DIN 21615-1990
- 中文标题:矿井辅助通风设备.带法兰和凸缘的薄金属板制异径接头.
- 英文标题:auxiliary ventilation for mining; sheet metal reducers with flange and shoulder
- 标准类别:德国标准
- 发布日期:1990-07-01
Reducers by this standard serve as connecting pieces for a graded connection between ventilation equipments with flange joints and flexible plastiv air ducts.
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