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what is the name of the balloon which used in the maintenance operation of the sewer network pipes?

sir, please i want to know the name of the balloon which used in the sewer pipes , and if you know website for this please write it to me

2006-07-04 00:14:07 · 1 answers · asked by mouza 1 in Science & Mathematics ➔ Engineering

1 answers

Found a reference to "inflatable sealing balloons"

2006-07-04 00:34:57 · answer #1 · answered by Robert A 5 · 0⤊ 0⤋

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