Stock photography, photos: Pile of drain pipes Stock photos of Photographed 2003 in Oulu,Finland,Scandinavia,Europe,EU Photograph: © Reino Hanninen Click for a larger image and more information Keywords associated with this stock photo: pipe,plastic,tube,hollow,bright,green,vivid,vibrant,ripple,many,stack,pile,round,circle,group,black,close up,closeup,symmetric,symmetrical,order,ordered,infrastructure,pipeline,industry,industrial,cylindrical,uniform,similar,similarity,identical,standard,plumbing,drain,drainage,building,equipment,material,water pipe,outside,outdoors,day,daytime,sewage,infrastructure