CPC Subgroup
B08B 9/02 Cleaning pipes or tubes or systems of pipes or tubes (apparatus for cleaning metal pipes by chemical methods C23G3/04)
Full Title
Cleaning hollow articles by methods or apparatus specially adapted thereto > Cleaning pipes or tubes or systems of pipes or tubes (apparatus for cleaning metal pipes by chemical methods C23G3/04)
3 direct subcodes
Child Classifications
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- B08B 9/023 Cleaning the external surfaces
- B08B 9/027 Cleaning the internal surfaces; Removal of blockages