B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
B08B9/027—Cleaning the internal surfaces; Removal of blockages
B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets