... ,250mm,300mm,400mm,500mm,600mm,800mm,1000mm,1200mm,1500mm. 1215 graham condenser/spiral condenser200mm,250mm,300mm,400mm,500mm,600mm,800mm,1000mm ... . 1216 reflux condenser pipe graham type/spiral type300mm,400mm,500mm,600mm. 1217 reflux condenser pipe ...